New chemical materials refer to materials characterized by novel structures,innovative preparation methods,improved performance metrics,and expanded application domains,developed through chemical research,synthesis,and utilization.As a cornerstone of the national economy,new chemical materials constitute a critical foundation for technological progress.In recent years,China's new chemical materials industry has undergone rapid advancement,particularly in areas such as energy storage materials,photoelectric conversion materials,photocatalytic materials,electronic materials,high-performance resins and fiber materials for advanced composites,as well as functional coatings and adhesives.These materials have played a pivotal role in driving development across multiple sectors,including wind power,photovoltaics,new energy vehicles,aerospace,and semiconductor packaging and testing,thereby fostering the emergence of high-quality productivity.To systematically document and disseminate these advancements,the New Chemical Materials Professional Committee of the CIESC will organize leading experts and scholars to compile an annual report on scientific and technological progress of new chemical materials of the year.This report will be published in the journal New Chemical Materials,providing a comprehensive resource for researchers and practitioners.

Fiber-reinforced polymer-based composites have been widely used in many industries for their excellent mechanical properties.However,it is difficult to analyze the integrity and durability of fiber-reinforced polymer-based composites due to their own structural characteristics as well as the complexity of the environment and loading conditions they are subjected to.The use of structural health monitoring (SHM) techniques to monitor the structural condition of composites improves the safety and reliability of composite structures and has been widely used in many industries.This paper reviewed the SHM methods and their applications for fiber-reinforced polymer-based composites based on electrical resistance sensing,and gave an outlook on the development of SHM for fiber-reinforced polymer-based composites.

Inorganic-reinforced plant fiber polymer composites have become the focus of attention in the field of functional composites due to their advantages of excellent performance,high added value and wide application fields.In this paper,the research status and progress of inorganic-reinforced plant fiber polymer composites such as montmorillonite,mica,oxide,calcium carbonate,talcum powder,graphene,carbon black and carbon nanotubes in flame retardancy,aging resistance,electrical conductivity and electromagnetic shielding at home and abroad were systematically reviewed.It also proposed the existing problems of inorganic-reinforced composites in functional expansion,inorganic-matrix composite and functional internal mechanism analysis,and the development prospect of functional composites was prospected,aiming to provide a scientific basis for further promoting the research of high value-added functional composites.

Mesoporous carbon materials with structured pore channels serve as excellent carriers for nanoparticles,effectively inhibiting their aggregation.Composite materials synthesized by loading gold nanoparticles (AuNPs) onto mesoporous carbons exhibit numerous advantages,including large specific surface area,excellent thermal stability,tunable pore size and structure,good dispersibility,and recyclability.This review covered the synthesis methods of mesoporous carbon-supported AuNPs composites,such as impregnation,ion exchange,deposition-precipitation,and sol-gel methods,along with their applications in chemical sensors,energy storage,and separation adsorption.The roles of characterization techniques such as transmission electron microscopy,X-ray diffraction,and inductively coupled plasma emission spectroscopy were discussed for revealing the composition,structure,and interface properties of these composites.Future research directions should include integrating composite materials with other active materials and applying artificial intelligence to the design and optimization of composite materials.

With the steady development of agricultural production in China,the amount of waste biomass carbon is also increasing.Due to the serious pollution caused by the stacking and incineration of waste biomass carbon,people are paying more and more attention on the recovery of biomass carbon resources.In this paper,the applications of biomass carbon in different fields were reviewed,the methods of preparing electrode materials from biomass carbon were summarized,and the performance and process characteristics of electrode materials prepared by different methods were briefly analyzed.Finally,the current status of electrode materials prepared from biomass carbon was summarized,and the future prospects were proposed.

First,small bimetallic oxide nanoparticles (CuFe₂O₄) were prepared from iron acetylacetonate [Fe(C₅H₇O₂)₃,98%],copper acetylacetonate [Cu(C₅H₇O₂)₂,97%],and triethylene glycol (TEG).The small bimetallic oxide nanoparticles (CuFe₂O₄) were loaded on magnesium peroxide (MgO₂) nanosheets by electrostatic adsorption to form metal oxide-based composite nanomaterials (CuFe₂O₄@MgO₂).The composite nanomaterials could produce a large number of highly toxic hydroxyl radicals (·OH) under acidic conditions in tumors,which had a large damaging effect on tumor cells.Transmission electron microscopy (TEM),XPS spectroscopy,and zeta potential were used to characterize the composite nanomaterials.The results showed that CuFe₂O₄ nanoparticles were distributed on the surface of magnesium peroxide (MgO₂) nanosheets,and zeta potential measurements confirmed the successful preparation of this composite nanomaterial.In vitro cellular experiments demonstrated that the composite nanomaterials possessed anti-tumor therapeutic effects.

Nanocellulose/histidine functionalized graphene hydrogels (NCGHiss) composites were successfully prepared by one-step hydrothermal method using a high concentration of graphene oxide solution (GO) as carbon source,nanocellulose (NC) as a physical spacer and histidine as a nitrogen dopant and spacer.NCGHiss exhibited excellent electrochemical performance in symmetric supercapacitors due to its abundant heteroatom functional groups (N,O) and good pore structure.The NCGHis10-based supercapacitor had a gravimetric specific capacitance of 232.39F/g at a current density of 0.3A/g,and its specific capacity retention rate was as high as 76.36% at 10A/g.In addition,the assembled device had a capacitance retention rate of 100.35% after 10000 charge-discharge cycles.

The energy-saving and consumption reduction technologies are the key to the green and low-carbon upgrades of the facility agriculture.Latent heat storage technology is promising in applications in the fields of facility agriculture,like solar thermal utilization,greenhouse walls,and soil insulation due to its high thermal storage density and excellent temperature control performance.This paper provided an overview of the main types and physicochemical properties of phase change materials (PCMs),and introduced the forms and preparation methods of three PCMs that suitable for facility agriculture:macro-encapsulated,shaped-stabilized,and encapsulated PCMs.It then summarized the application of PCMs in facility agriculture files from the perspectives of active and passive latent heat storage systems.Finally,the paper highlighted the future development directions of PCMs in facility agriculture field,including improving the performance of PCMs,optimizing latent heat storage systems,and intelligent indoor environmental control for facility agriculture.

Wave-absorbing materials have become an effective means to cope with the electromagnetic radiation problem generated by wireless communication networks of electronic products and to enhance the radar stealth capability.Especially in view of the development trend towards equipment lightweighting,the research and application of lightweight wave-absorbing materials are particularly important.This article analyzed the patent data on lightweight wave-absorbing materials between 2005 and 2024 year,and systematically summarized the application trend,geographical distribution characteristics and main patent applicants.Focusing on the three key areas of foam,aerogel,and honeycomb structure materials,this article explored the current state of lightweight wave-absorbing materials.It also put forward suggestions for future technological advancements and intellectual property strategies to avoid risks and drive innovation in the industry,ultimately providing robust support for industrial growth and development.

Mixed matrix membranes (MMMs) demonstrate gas separation performance beyond conventional polymer membranes by combining the excellent selectivity of inorganic fillers with the excellent permeability of polymer matrices.The basic assumptions and limitations of the current popular effective medium (EMA) permeation models for predicting mixed matrix membranes were discussed.By comparing the predicted values of the permeability models with the experimental data,the application range of these models in predicting the permeability of MMMs was revealed.On this basis,the future development direction of the model was proposed,aiming at providing theoretical basis and guidance for the design and optimization of high-performance gas separation membrane materials.

Superhydrophobic materials are widely used due to their extraordinary wetting properties.However,most of the superhydrophobic surfaces currently prepared have poor durability,which severely limits their practical applications.Starting from the superhydrophobic mechanism,this article introduced the failure mechanism of superhydrophobic surfaces and reviewed the methods to improve the durability of superhydrophobic surfaces in recent years,including constructing multi-level micro-nano rough structures on material surfaces,adding adhesives,preparing integrated structures or self-healing superhydrophobic surfaces.Finally,some issues related to superhydrophobic surfaces were summarized,and their future development prospects were discussed.

MXene is an emerging class of inorganic two-dimensional (2D) structural materials following graphene,which has attracted wide attention in the fields of materials science,biomedicine and nanotechnology in recent years.MXene has good thermal stability,unique layered structure,excellent catalytic activity and adjustable chemical properties,which will confer excellent flame-retardant properties to the materials if it is used as a flame retardant for flame-retardant treatment.This paper described in detail the preparation methods of MXene by etching and chemical vapor deposition,as well as the flame-retardant mechanism of MXene and the research progress of MXene flame-retardant materials.It highlighted the advancements in modifying MXene flame-retardant materials through the addition of modifiers,surface functional group modifications and covalent bonding functionalization,and the research on the synergistic enhancement of polymer flame-retardant effect by MXene with other flame retardants to improve the flame retardancy of polymers.Finally,the development prospect of MXene flame-retardant materials was also prospected.

Carbon dots are a new type of fluorescent carbon nanomaterials with the characteristics of photoluminescence,fluorescence stability,matt bleaching and good water solubility,etc,and are widely used in the fields of environmental monitoring,analysis and detection and photoelectric components.The preparation methods of fluorescent carbon dots,such as electrochemical synthesis,laser ablation,hydrothermal method,ultrasonic method,microwave method and template method,were introduced.The main reasons for fluorescence quenching of fluorescent carbon dots in the detection of heavy metal ions were analyzed.The application of fluorescent carbon dots in the detection of heavy metal ions was reviewed,and the future development direction was prospected.

Zeolitic imidazolate framework materials are a kind of new metal-organic framework materials with zeolite topological structure formed by the coordination of transition metal ions with imidazole or imidazole derivatives,have high specific surface area,porosity and chemical stability,and are widely used to adsorb heavy metal ions,antibiotics,dyes and other pollutants in wastewater.The research progress of different forms of zeolitic imidazolate framework materials on the adsorption of pollutants in water in recent years was reviewed,including their preparation methods,adsorption properties and adsorption mechanisms.The advantages and limitations of zeolitic imidazolate framework materials were discussed.

The size of the titanium-based lithium-ion sieve (β-H₂TiO₃) powder used for lithium extraction from salt lakes belongs to the micro-nano level,and it needs to be granulated and shaped in order to be used for column filling.In view of the actual application conditions of β-H₂TiO₃ (lithium extraction in alkaline environment and lithium elution in acidic environment),this paper adopted acid-alkali resistant polysulfone (PSF) as the binder for droplet formation of β-H₂TiO₃ powder.By investigating the effects of PSF dosage,N,N-dimethylacetamide (DMAC) dosage,polyvinylpyrrolidone (PVP-K15) dosage,gel bath temperature and drop pinhole diameter on the properties of β-H₂TiO₃-PSF particles,the formula and process of drop pellet molding were determined.The volume adsorption capacity of the obtained β-H₂TiO₃-PSF particles for Li⁺ was 4.70g/L,the bulk density was 0.455kg/L,and the volume adsorption capacity of the material still remained at 95% of the original value after 100 cycles.

Tris(aminomethyl) phosphine oxide was synthesized using tetrakis(hydroxymethyl) phosphonium sulfate as raw material,and then reacted with 4,4′-biphenyldicarboxylic acid to obtain phosphorus-containing hyperbranched semi-aromatic polyamide.The structures of tris(aminomethyl) phosphine oxide and phosphorus-containing hyperbranched polyamide were characterized by FT-IR and (¹H,¹³C,³¹P) NMR,and the branching degree of the polymer was calculated to be 0.69.Thermogravimetric analysis (TG),dynamic mechanical thermal analysis (DMA),and microscale calorimeter (MCC) were used to analyze the properties of the polymers.The results showed that the phosphorus-containing hyperbranched semi-aromatic polyamides had high thermal stability and good flame retardancy.

The photocurable fluorosilicone resin (FPSi) co-modified by γ-methylacryloxy-propyl trimethoxy-silane and phenylsilane was prepared from perfluoropolylether,fluoroalkyl silane,amino-silane,γ-methylacryloxy-propyl trimethoxy-silane and phenylsilane by hydrolysis and co-condensation.The coating was characterized and tested by FT-IR and SEM,and the overall properties of the coating were studied.The results showed that,when the fluorine content was 20wt%,the surface hydrophobic effect of the photocurable coating UVFPSi was good,with a water contact angle of 118°,and a light transmittance of 90.83%.The coating surface was intact after 5wt% sulfuric acid immersion and salt spray resistance test,demonstrating excellent chemical resistance.

Through the study on the high-temperature resistant system,anti-sealing degradation system and catalyst system,a silicon sealant for polyimide curing and molding was prepared,and the sealing property of the silicone sealant was evaluated and verified.The prepared silicone sealant exhibited a temperature resistance of up to 380℃,and still retained a certain extent of elasticity after aging at 350℃ for 24h,demonstrating excellent high-temperature resistance and anti-sealing degradation properties.Moreover,the silicone sealant could ensure the sealing effect required by hot-press can molding process at a polyimide curing temperature of up to 380℃ and a pressure of 3MPa,which met the demands of the batch preparation of polyimide composites.

The gradient pre-oxidation treatment of homopolymerized and copolymerized polyacrylonitrile-based precursor fibers were carried out under the same process conditions,and the variation rules of the microstructures of the two types of precursor fibers in pre-oxidation process were analyzed by organic elemental analysis,X-ray diffraction,Fourier transform infrared spectroscopy,and optical microscope.The effects of the introduction of copolymer monomers on the structures of precursor fibers and pre-oxidized fibers were thoroughly explored with the aim of providing certain theoretical basis for the actual production of carbon fibers.The results showed that the introduction of copolymer monomers affected the regularity of PAN molecular chains,reduced the crystallinity of the precursor fibers,increased the intergranular spacing and grain size,so that the crystal structure of the precursor fibers was more likely to be destroyed during pre-oxidation process.It could make the pre-oxidation reaction of the precursor fibers become gentle,and more PAN molecular chains form a stable cross-linking structure,and at the same time,it could attenuate the skin-core structure and improve the homogeneous properties of the fibers.

To improve the properties of liquid silicone rubber (SR),an active hexa(2-allylphenoxy) cyclic triphosphonitrile derivative modifier (HAPPCP) was designed and synthesized,and the effects of HAPPCP on the mechanical properties,thermal stability,ablation resistance,and flame retardancy of addition type SR were investigated.The results showed that,compared with the unmodified SR,the tensile strength and elongation at break of 3 phr HAPPCP-modified addition type SR were improved by 40.5% and 204.4%,respectively,and the mass ablation rate and linear ablation rate were reduced by 19.90% and 55.70%,respectively.When 5 phr of HAPPCP were added,the mass residual rate at 800℃increased from 18.86% to 30.15%.The flame retardancy of the HAPPCP-modified addition type SR was improved,turning it from a flammable to a combustible material.The total heat release rate,the peak value of the heat release rate,the amount of smoke release and the hazardous level of modified SR all reduced in the combustion process.

Cellulose acetate nanofiber membranes were prepared by electrospinning,followed by deacetylation treatment,and Li_1.4Al_0.4Ti_1.6(PO₄)₃ inorganic particles were introduced to modify the polyethylene oxide (PEO) electrolyte,which could improve ionic conductivity,lithium-ion migration number,and cycling stability of lithium-sulfur batteries.The results showed that the ionic conductivity of the cellulose nanofibers and LATP-modified PEO solid electrolyte reached 3.43×10^-4S/cm at 60℃,and the lithium-ion migration number reached 0.44,which were higher than those of the unmodified PEO solid electrolyte.The modified PEO solid electrolyte exhibited an initial discharge-specific capacity of 844.13mAh/g at 60℃ and 0.1C,and achieved 50 cycles.

Green reducing agents,ascorbic acid (AA) and tannic acid (TA),were used to reduce graphene oxide (GO),yielding two types of reduced graphene oxide (RGO) and TA-modified reduced graphene oxide (RGOA),respectively.It was found that both AA and TA could effectively reduce GO in aqueous solutions through the characterization and testing of RGO and RGOA.The prepared RGO and RGOA exhibited significant differences in morphology,hydrophilicity,and conductivity.RGO was a fragmented and disordered solid structure with a larger specific surface area.The electrical conductivity was significantly increased,and the reduction degree was higher than RGOA,but the hydrophilicity was poor.In contrast,RGOA presented an expanded and curled flocculent structure due to the introduction of the polyphenolic hydroxyl groups of TA,and the electrical conductivity was improved slightly and the hydrophilicity was enhanced obviously.

Three neutral gel electrolytes,PVA-NH₄Cl-ZnCl₂,PVA-NH₄Cl-KI and PVA-NH₄Cl-KCl,as well as an alkaline gel electrolyte,PVA-KOH,were prepared using polyvinyl alcohol (PVA) as the polymer matrix,NH₄Cl as the main component of electrolyte,and ZnCl₂,KI,KCl and KOH as additives.The Fourier infrared spectra,electrochemical properties,water retention and tensile properties of the neutral and alkaline gel electrolytes were analyzed.The results showed that the self-discharge performance,discharge duration,specific capacity and cycle time of the neutral gel electrolytes and their assembled zinc air batteries were better than those of the alkaline gel electrolyte and its assembled battery.The neutral gel electrolyte PVA-NH₄Cl-KCl and its assembled battery had the best performance,with a tensile strength of 101.40kPa and an elongation of 196.43%.The specific capacity of the assembled zinc-air battery was 793.40mAh/g,and the maximum power density was 1.38mW/cm².

Based on the coprecipitation and cation exchange method,narrow-band K₂TiF₆∶Mn⁴⁺ red phosphor was prepared by a HF-free liquid phase method.The effects of the ammonium fluoride and sulfuric acid (NH₄F+H₂SO₄) reactant dosage and the doping concentration of Mn⁴⁺ on the morphology and luminescent properties of the samples were studied.A white light-emitting diode (WLED) was packaged using the synthesized K₂TiF₆∶Mn⁴⁺ with commercial Y₃Al₅O₁₂∶Ce³⁺ and InGaN blue chips.The results showed that the prepared K₂TiF₆∶Mn⁴⁺ red phosphor had strong UV and blue absorption at ～360nm and ～465nm,and presented sharp emission peaks in the wavelength range of 600～650 nm.With the increase of the NH₄F+H₂SO₄ dosage,the luminous intensity of the phosphor first increased and then decreased,and the sample showed concentration quenching effect when the doping concentration of Mn⁴⁺ was 10%.When the dosage of NH₄F+H₂SO₄ was 60mmol and the doping concentration of Mn⁴⁺ was 8%,the optimal quantum efficiency of the prepared phosphor sample reached 67%,and the WLED device packaged with it achieved a color rendering index of 79.4 and a lumen efficiency of 80.62 lm/W.

Using borate as the matrix material,spherical and sea urchin-like silicon nanospheres with varying specific surface areas were prepared as precursors through sol-gel-high-temperature solid phase method.Single-doped YBO₃∶Eu³⁺ and co-doped YBO₃∶Eu³⁺,Tb³⁺-coated SiO₂ nanosphere core-shell structured fluorescent materials were synthesized by co-precipitation method-temperature solid phase method.The morphology and the luminescent performance of the generated fluorescent materials were analyzed using XRD,FT-IR,SEM,TEM,fluorescence spectrum representation,and CIE chromaticity calculations.The results proved that after doping with Eu³⁺,a slight distortion in the YBO₃ lattice occurred,accompanied by minor shifts in absorption peaks in the FT-IR spectrum,which proved that Eu³⁺ was successfully doped into the YBO₃ lattice.YBO₃ was wrapped on the surface of the SiO₂ core with a block structure.Under the excitation of 395nm light,the emission peak strength at 612nm of the single-doped Eu³⁺ fluorescent material was the strongest,which was a ⁵D₀→⁷F₂ electric puppet transition of Eu³⁺.The matrix material exhibited self-excited blue light under 456 nm light excitation.Tb³⁺ with green light was added for white light modulation.Under 275 nm excitation,the SiO₂@YBO₃∶5% Eu³⁺,7% Tb³⁺ produced chromaticity coordinate of (0.3130,0.2936),with a correlated color temperature of 6834.43K and color purity of 7.4%,making it a near-white light core-shell structured fluorescent material with potential for WLED core-shell composite application.

Flexible electronic devices are the trend of future development,and need flexible power sources to match.As the core of flexible power sources,flexible electrode materials are obviously vital.Metallic nickel was deposited on the surface of carbon cloth by electrochemical deposition method,and subsequently,flexible nickel sulfide electrode materials with good electrochemical performance were prepared by solvothermal sulfurization process.The structure,morphology and electrochemical performance were characterized by X-ray diffractometer,field emission scanning electron microscope,and electrochemical workstation,respectively.The results showed that at a current density of 10A/g,the specific capacity of the flexible nickel sulfide electrode material remained at 1620F/g after 3000 cycles,demonstrating good capacitive performance.

China is rich in industrial waste heat resources,the use of phase change heat exchangers to recover waste heat for building heating provides a reliable new way for clean heating.Binary mixed phase change materials of paraffin and stearic acid were prepared in different ratios,and experimental research on the changing rules of phase change temperature,latent heat of phase change,and thermal conductivity of the mixed phase change materials was carried out with the aim of finding suitable energy storage materials for phase change heat exchangers used in waste heat recovery.The results showed that the phase change temperature of 62^# paraffin and stearic acid mixture fluctuated in the range of 43～66℃.When the ratio of 62^# paraffin and stearic acid was 20%∶80%,the phase change temperature was 62.73℃,and the latent heat of phase change was relatively large at 205.53J/g.There was not much difference between the latent heat of melting and the latent heat of condensation of the binary mixture,and the material exhibited minimal subcooling,making it an ideal energy storage material for phase change heat exchangers used for waste heat recovery at low-temperature.In application,the energy storage material is applied in phase change heat exchangers,the energy storage material melts and recovers industrial waste heat for heat storage,and the stored heat is used to heat the radiator backwater,thereby realizing the transformation of intermittent industrial waste heat into continuous output heat for heating.

In this paper,the preparation process and interface performance characterization method of phenolic resin-based (PF) co-curing damping film composites with excellent aging resistance,high-temperature resistance and superior mechanical properties were proposed.Based on polymer synthesis theory and orthogonal experiments,the material components of hydrogenated carboxyl nitrile butadiene rubber (HXNBR) co-cured with phenolic resin matrix at 150℃ where developed,which addressed the problem of asynchronous co-curing between HXNBR and phenolic resin.The preparation process of viscoelastic material films capable of co-curing with phenolic resin was developed,and the variation rule of the interlayer bonding performance of phenolic resin-based co-curing composite materials with the HXNBR thickness was systematically studied.The occurrence of chemical reactions at the interface was confirmed by XPS and FT-IR.

To solve the problem of low tensile strength of poly (butylene adipate-co-terephthalate) (PBAT),polylactic acid (PLA)-reinforced PBAT composites were prepared by melt blending.The effects of PLA content on the tensile properties,microphase structure,thermodynamic properties and chemical constitution of PBAT were studied.After the addition of polyethylene glycol 400 (PEG400),the composite materials were prepared into films,and the tensile properties and micro morphology of the films were further studied.The results showed that with the increase of PLA content,the tensile strength of PBAT/PLA/CaCO₃ composites increased firstly and then decreased,and the elongation at break decreased.Although the addition of PEG400 reduced the tensile strength of PBAT/PLA/CaCO₃ composites to a certain extent,it improved the compatibility between PBAT and PLA,so the elongation at break of the composites could be enhanced significantly.According to the experimental results,compared with pure PBAT,when PLA content was 10%,the tensile strength and elongation at break of PBAT/PLA/CaCO₃/PEG400 composites were increased by 9.43% and 6.94%,respectively,widely expanding their application range.

Using the sol-gel method,SiO₂ with good internal interfacial force was in-situ grown on the surface of sodium montmorillonite (MMT) to obtain MMT-grafted SiO₂ (referred to as MMT-SiO₂ particles).The MMT-SiO₂ particles were then subjected to intercalation hydrophobic modification using trimethyloctadecylammonium bromide (STAB),a cationic modifier,to obtain modified MMT-grafted SiO₂ (referred to as MMT-SiO₂-STAB composite particles).The MMT-SiO₂-STAB composite particles were used as a reinforcing phase,and polydimethylsiloxane-modified epoxy resin (EP/PDMS) was used as the matrix to prepare the EP/PDMS/MMT-SiO₂-STAB composite coating.The morphology,structure,and contact angle of the composite coating were analyzed and tested by scanning electron microscopy (SEM),X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FT-IR),and contact angle goniometer.The results showed that after the ion exchange reaction between STAB and MMT-SiO₂,STAB adhered to the edges of MMT.As the amount of STAB increased,the interlayer spacing of MMT first increased and then decreased.The larger the interlayer spacing of MMT in MMT-SiO₂-STAB,the better the compatibility between the reinforcing phase and the resin,effectively improving the dispersion stability of the reinforcing phase in the matrix and the wear resistance of the composite coating.The prepared composite coating exhibited a contact angle of (153.7±1.2)° and a rolling angle of (8.9±0.6)°,indicating significant superhydrophobic characteristics.

Fluorinated poly (aryl ether ketone) has excellent mechanical properties,thermal properties,and low dielectric constant,which are widely used in fields such as electronics,electrical appliances,integrated circuits and other fields.With the rapid development of technology,higher requirements for the hydrophobic and antifouling properties of polymers are proposed.In this study,a series of fluorinated poly (aryl ether ketone) copolymers (FPAEK) with different fluorine contents were prepared through the copolymerization of 4,4′-difluorobenzophenone,hexafluorobisphenol A and bisphenol A.These copolymers were then combined with perfluorooctyltriethoxysilane-modified SiC nanoparticles (F-SiC) to prepare superhydrophobic F-SiC/FPAEK composite coatings.It was found that as the proportion of hexafluorobisphenol A increased,i.e.the fluorine content increased,the glass transition temperature of FPAEK increased from 151.5℃ to 160.4℃,the water contact angle increased from 63.3° to 105°,and the tensile strength increased from 50.2MPa to 65.1MPa.When the amount of F-SiC was 1% (mass fraction),the superhydrophobic performance of the composite coating was the strongest,with a water contact angle of up to 173°.The above research results indicated that the composite coating had extremely low wettability,low water absorption,and excellent self-cleaning performance.

The bismaleimide resin (BMI) was used as the base phase,carbon fiber as the reinforcement,and hydrogenated carboxyl nitrile butadiene rubber (HXNBR) as the viscoelastic material.Molecular dynamics simulation was used to reveal the co-curing mechanism of HXNBR and BMI at 180℃.By changing the content of silane coupling agent KH550 and processing assistant WB212,a BMI embedded co-curing damping composite (ECCDS) with excellent properties was designed.The vulcanization test result indicated that the addition of KH550 and WB212 increased the degree of crosslinking and vulcanization property of the damping material.The infrared spectrograph and micromorphology analysis confirmed that a large number of new chemical functional groups were generated between HXNBR and BMI,and an interpenetrating mesh structure was formed,which significantly improved the interlayer bonding properties of the composite material.

In this paper,the sol gel-hard template method was used to prepare mesoporous perovskite (LFO) precursor,and high-temperature solid phase reaction was used to prepare g-C₃N₄.LFO and g-C₃N₄ were then combined in different proportions.The structure and properties of the composites were characterized and tested by XRD,BET,SEM,CV,LSV and EIS.The results showed that LaFeO₃-70% g-C₃N₄ (LFO-70%) had an oxygen reduction potential of 0.75V,a half wave potential of 0.65V,and an initial potential of 0.8V,exhibiting the most excellent catalytic activity for oxygen reduction.

Different anionic acids were employed as the electrolyte in the oxidation process to produce graphene oxide by electrochemical exfoliation method.The results indicated that graphene oxide could be successfully obtained in the presence of SO^2-₄,NO^-₃ and PO^3-₄ ions.When sulfuric acid was used as the electrolyte,SO^2-₄ promoted the generation of ·OH radicals and reduced the surface tension of graphite intercalation compounds,resulting in the formation of graphene oxide with higher oxidation degree under identical process conditions.Furthermore,the oxidation degree of graphene oxide was positively correlated with its capacitance performance,cycle stability,and impedance.Specifically,the graphene oxide prepared with sulfuric acid as the electrolyte exhibited a specific capacitance of 30.5F/g at a current density of 0.5A/g and maintained 83% of its initial capacitance after 500 cycles.

Ni_1-xSe(x=0 and 0.15) nano-powders were prepared by one-step synthesis using natural plant phenolic acid-gallic acid as reducing agent under mild hydrothermal reaction conditions.Meanwhile,the effects of reaction temperature and solution pH on the composition of the products in hydrothermal reaction were studied.XRD,XPS,SEM,TEM and electrochemical tests were also performed to characterize the hydrothermal products.The results showed that single-phase NiSe could be obtained at temperature of 180℃ and pH=12,whereas at temperature of 200℃ and pH=7,single-phase Ni_0.85Se was obtained.Among them,NiSe nano-powders exhibited obvious electrocatalytic activities for the hydrogen evolution reaction,with an overpotential of 398mV,a Tafel slope of 152mV/dec,and good electrocatalytic stability at current density of 10mA/cm².

Co-crosslinked methyl vinyl silicone rubber/polyolefin elastomer (VMQ/POE) blends with thermos-responsive shape memory properties were obtained by mechanically blending and chemically crosslinking VMQ with POE.The shape memory properties of the VMQ/POE blends were determined by crosslinking,crystallization and melting.Among them,the degree of crosslinking had a significant effect on crystallization and melting.In this paper,the influence of crosslinking agent on the vulcanization characteristics as well as the thermal,tensile,and bending shape memory properties of the blends was analyzed emphatically.The results showed that the vulcanization curve of the blends with crosslinking agent displayed typical vulcanization characteristics,such as scorch,thermal vulcanization and flat vulcanization,and the crosslinking rate and gelation rate of the blends increased with the increase of crosslinking agent content.Under the same tensile stress load,the maximum strain value and fixed rate of the blends gradually decreased,while the recovery rate increased first and then decreased with the increase of crosslinking agent content.The blends exhibited well cyclic tensile shape memory stability.The maximum strain and fixation rate of the blends did not change obviously,while their recovery rate increased significantly.Under the same bending stress,the fixation angle,recovery angle and recovery rate of the blends all increased with the increase of crosslinking agent content.Comparatively,when crosslinking agent content was between 0.5～1.0phr,the blends had better tensile and bending shape memory performance.

Traditional adsorbents can only adsorb pollutants,but cannot degrade them.A novel functionalized porous microsphere material (CS-Fc) was prepared by emulsion crosslinking method using ferrocene (Fc) as Fenton reactive group and crosslinking agent and chitosan (CS) as skeleton.CS-Fc could not only rapidly adsorb the anionic dye methyl orange (MO),but also rapidly remove the cationic dye methylene blue (MB) by introducing catalytic degradation.The removal efficiencies for MO and MB increased from 32% to 99% and from 5% to 99%,respectively.The CS-Fc/H₂O₂ system could still maintain a high removal rate of more than 95% under neutral and high concentration wastewater condition.Through free radical quenching experiments,it could be seen that hydroxyl radicals were the main reactive oxygen species involved in degradation.Through simple centrifugation and water washing,the removal rate was more than 85% after five cycles.This functionalized green porous microsphere can be a promising material for the treatment of broad-spectrum pollutants.

Polyacrylamide/peach gum polysaccharide/attapulgite hybrid hydrogel (PAAm/PGP/ATP) was prepared by redox polymerization,and used as an adsorbent to remove the anionic dye neocarmine from aqueous solution.The hybrid hydrogel was characterized by Fourier transform infrared spectroscopy (FT-IR),thermogravimetry (TG) and scanning electron microscope (SEM),and the adsorption kinetics,thermodynamics and isothermal adsorption behavior of the hybrid hydrogel were studied.The results showed that the hybrid hydrogel with micron pores was successfully prepared by redox polymerization,and the maximum water uptake was 11.2g/g.The adsorption equilibrium time of PAAm/PGP/ATP hybrid hydrogel was 10 min,and the adsorption process with endothermic and spontaneous feature fitted the pseudo-first-order kinetic model and followed the Langmuir isotherm model.The maximum adsorption capacity of the hydrogel towards neocarmine was 504.5mg/g.

A series of biochar/poly(N-phenylglycine) (BC/PNPG) composite adsorbents were prepared by in-situ polymerization method through controlling the biochar pyrolysis temperature and N-phenylglycine/biochar (NPG/BC) mass ratio.The influence of the synthesis conditions on the adsorption performance of Sb(Ⅲ) was studied,and the adsorption mechanism was revealed by SEM,FT-IR and XPS.The results showed that the adsorption capacity of Sb(Ⅲ) increased with the increase of pyrolysis temperature,and the maximum was 7.55mg·g^-1.The adsorption capacity of BC₃/PNPG prepared under the conditions of pyrolysis temperature of 800℃,NPG/BC mass ratio of 5∶5,and acidic environment was 17.65mg·g^-1,which was 2.3 times that of the pristine BC.The adsorption mechanism of the composite adsorbent for Sb(Ⅲ) included the chelation of aniline group with Sb(Ⅲ),the oxidation of Sb(Ⅲ) by protonated bipolarizers with positive charge,and the electrostatic interaction between positively charged PNPG with Sb(OH)^-₆.

Using leather waste chips as carrier,a collagen fiber-based adsorption material was prepared through loading chitosan onto leather waste chips with glutaraldehyde as cross-linking agent.The adsorption performance of the material for acidic red A-2BF was studied.The effect of the dyeing wastewater pH,adsorbent dosage,initial concentration of dyeing wastewater,and adsorption time on the adsorption performance were analyzed.An appropriate model for the adsorption process was established,its adsorption behavior was described,and the adsorption mechanism was explored.The structure of waste leather chips before and after modification was characterized by infrared spectroscopy.The results showed that the removal ratio and adsorption capacity achieved 96.7% and 188.2mg/g,respectively,after absorption for 2.0h under the conditions of an initial waste solution concentration of 100mL/L,a pH of 4.0,and an adsorbent addition of 0.05g/100mL.The adsorption process conformed to the pseudo first order kinetics and Freundlich isothermal adsorption model,and the adsorption reaction was a spontaneous endothermic process.FT-IR infrared spectroscopy analysis indicated that chitosan was successfully grafted onto chrome leather waste chips,providing adsorption sites for the adsorption of dyes.

In the face of escalating antibiotic resistance due to widespread usage,the persistent emergence of multidrug-resistant pathogens is a formidable threat to human health.Traditional low-molecular-weight antibacterial agents,when used alone,often fall short of achieving desired efficacy,hampered by issues of biocompatibility and stability.The introduction of polymeric antibacterial materials,characterized by diverse synthesis strategies and higher efficiency,offers a promising approach to combatting pathogenic microorganisms.Contrasted with their low-molecular-weight organic or inorganic antibacterial materials,these materials demonstrate commendable biocompatibility,controllable functional attributes,and a more extensive range of structural designs,enabling inhibitory and bactericidal effects through diverse mechanisms.Their widespread adoption is observed in treating drug-resistant bacterial infections,formulating advanced wound dressings,targeted antibacterial interventions,and developing antibacterial coatings.This discourse provided a comprehensive classification and summary of existing polymeric antibacterial materials,considering synthesis strategies and mechanisms of action.It also outlined current challenges in their development and offered a forward-looking perspective on future directions,with the overarching goal of leveraging the intrinsic strengths of polymeric antibacterial materials for broader application.

Graphene is widely used as an electrocatalyst or electrocatalyst carriers for fuel cells because of its excellent thermal and electrical conductivity,high mechanical strength and flexibility,as well as high specific surface area and easy chemical modification.In this paper,firstly,the preparation methods of graphene-based material-supported precious metal catalysts in the past five years were reviewed.Secondly,the latest research achievements and progress of three types of graphene-based supports,namely reduced graphene oxide,doped graphene,and modified graphene,in electrocatalytic reactions were analyzed.The electrocatalytic performance of different graphene-based materials for the construction of electrocatalysts was compared,and the advantages and challenges of graphene-based carriers as electrocatalyst carriers were discussed.Finally,the development trend of graphene-based materials as electrocatalyst carriers was summarized and prospected.

Dressings,as medical materials for covering wounds,are important products for people's health.As skin substitutes,dressings play an important role in the treatment of traumatic wounds.However,traditional medical dressings are prone to infection,cause secondary injuries,and have low patient comfort.Therefore,it is crucial to develop new wound dressings and improve traditional dressings.The use of carbon material as a dressing material has the advantages of low production cost,good biocompatibility,strong adsorption,and excellent mechanical properties,so the carbon dressings have good bactericidal activity and stronger wound healing ability,and have a good development prospect.This paper described the principle of wound healing,briefly introduced the development history of carbon materials as medical dressings,summarized the types and applications of carbon dressings,and provided an outlook on the future development prospects of carbon dressings.

In order to respond to the national “double carbon” strategy,this paper greenly prepared an ethylene propylene rubber powder-based polypropylene thermoplastic elastomer with high strength and aging resistance,optimized the ratio of ethylene propylene rubber powder and polypropylene,determined the variety and dosage of compatibilizers,and optimized the chemical grafting process between ethylene propylene rubber powder and polypropylene.The experimental results showed that using environmentally friendly compatible agent 2,4-di-tert-butylperoxyisopropylbenzene (BIBP) together with sulfur S₈ could make the rubber powder-based polypropylene thermoplastic elastomer have excellent mechanical and aging resistance.The tensile strength reached 20MPa,and the elongation at break was more than 800%.This material could be used in the preparation of negative carbon for aging resistant auto parts,pier buffers,various rubber hoses and plates as well as other products.

Janus is a kind of particles with different structures on two sides,with adjustability and amphiphilicity.According to the characteristics of its adjustability,a variety of responsive Janus particles have been developed and applied in different fields.The Janus particles with magnetic responsiveness,light responsiveness and pH responsiveness are more technically mature and widely used materials.In this paper,the preparation methods,catalytic properties and applications of magnetic-responsive,light-responsive and pH-responsive Janus particles were introduced.

As a new type of three-dimensional (3D) graphene material,graphene foam has a unique network/skeleton structure,and shows greater performance advantages than two-dimensional (2D) graphene in many fields.However,the high porosity and low mechanical strength of its own structure also limit the application of graphene foam.In this paper,a self-supported 3D graphene foam with graphene sheet/layer thickness of 150～350nm was prepared by chemical vapor deposition (CVD) method using 2mm thick commercial nickel foam as growth template.Further,high-quality compressed graphite foam was obtained by optimizing the carbon-to-hydrogen ratio and compressing the growth template during the preparation process.Experimental studies confirmed that the compressed graphite foam with thicker graphene layer,higher crystallinity and denser network skeleton structure had excellent electrothermal performance.Under the low driving voltage of 3V,the electric heating temperature of the moderately compressed high-quality graphite foam could reach 580℃,which was about 220℃ higher than that of conventionally prepared graphite foam.The research also demonstrated that the electrothermal de-icing effect of the compressed graphite foam was remarkable,and it had both highly efficient conduction heating and superior radiative heating capability.As a new kind of electric heating material with high efficiency and energy saving,compressed graphite foam has great potential application value in household appliances,artificial intelligence,health care,energy,thermal management and other fields.

As the basis for the formation of intumescent flame-retardant carbon layer,charring agent plays a vital role in intumescent flame-retardant system.Multi-hydroxyl charring agents are mainly polyols and their derivatives,as well as biomass polysaccharides.This paper summarized the characteristics and application of multi-hydroxyl charring agents,and looked forward to the development trend of multi-hydroxyl charring agents.

Inorganic salt-doped polyaniline (PANI) cotton fabric was prepared by in-situ polymerization using inorganic salts such as zinc chloride,lithium chloride,copper chloride dihydrate,iron chloride,and magnesium chloride.The microscopic morphology,structure,and thermal stability of the cotton fabric were analyzed by field emission scanning electron microscopy,ultrafast micro-Raman imaging spectroscopy,X-ray diffraction,and thermogravimetric analysis.Additionally,its photoelectric thermal properties were studied.The results indicated that PANI underwent polymerization on the cotton fabric,imparting excellent electrical conductivity,with a conductivity of up to 15.7S/m.The lithium chloride-doped PANI cotton fabric exhibited the best photothermal performance.In terms of electrothermal performance,the copper chloride-doped PANI cotton fabric demonstrated the highest conductivity,achieving up to 57.4S/m.The heating fabric had the ability to adjust controllably its temperature according to human body's needs.The lithium chloride-doped fabric reached 65.0℃ under 600W/m² irradiance,and the copper chloride-doped fabric reached 40.1℃ under 9.0V.The doped fabric showed an improvement of 8.2% in photothermal properties and 45.8% in electrothermal properties compared to undoped polyaniline cotton fabric.

Two-dimensional materials (2D) refer to materials in which electrons can only move freely on two dimensions of nanometer scale.Due to their unique layered structure,high specific surface area and good chemical modifiability,they have a wide application prospect in the fields of physics,chemistry and nanotechnology.In addition,different 2D nanomaterials have potential conductivity,high thermal conductivity,catalytic activity and ultraviolet resistance,which can meet the special needs of different materials.When 2D materials are used as flame retardants,they can form effective physical barriers,improve the thermal stability of the substrate,reduce the flammability of the materials,and ensure the safety of the materials.In this paper,the preparation technology and flame retardancy of 2D materials such as layered double hydroxides (LDHs),transition metal disulfides (TMDs),black phosphorus (BP) and hexagonal boron nitride (h-BN) used as flame retardants were described in detail,and the future research and development direction of 2D materials was also prospected.

In the article,calcium sulfate whiskers were prepared by microwave method using the waste slag (rare earth gypsum) generated from the rare earth metallurgical process as the raw material.Then the effect of mother liquor circulation on the preparation of calcium sulfate whiskers and their crystal transformation was explored.The crystal transformation conditions of calcium sulfate whiskers were clarified.Finally,the properties of calcium sulfate were investigated.The structure,morphology and properties of calcium sulfate whiskers were characterized and analyzed by X-ray diffractometer (XRD),scanning electron microscope (SEM),thermogravimetric-differential calorimetric analyzer (TG),Fourier-transform infrared spectrometry (FT-IR),and atomic force-Raman and fluorescence spectrometry (F-4600).The results showed that the morphology and crystal structure of the whiskers were stable with an average length of 92.4μm and an aspect ratio of 13.7 after three cycles of the mother liquor,indicating that the mother liquor recycling scheme was feasible.The recycled products were dried by regulating the drying temperature,and dihydrate,hemihydrate and anhydrous calcium sulfate whiskers were prepared at 80℃,90℃ and 420℃,respectively.All three prepared calcium sulfate whiskers had the performance of absorbing UV light and emitting blue light,among which the hemihydrate calcium sulfate whiskers had the best luminescence performance.The recycling of solid waste and mother liquor improved the resource utilization efficiency in the process of waste residue and waste liquid treatment,and reduced the adverse impact on the environment.By regulating the crystal shape of calcium sulfate whiskers and endowing them with luminescent properties,new directions for exploring the application fields of calcium sulfate whiskers were provided,and at the same time,new ideas for the clean production of rare earth metallurgy were offered.

A degradable CMC/BP water-absorbing resin was prepared using carboxymethyl cellulose (CMC) and bamboo powder (BP) as the main raw materials,and polyethylene glycol diglycidyl ether (PEGDE) as the crosslinking agent.The effects of BP dosage,crosslinking agent dosage,and reaction temperature on the performance of CMC/BP water-absorbing resin were investigated.The microstructure and morphology of the CMC/BP water-absorbing resin were characterized by X-ray diffractometer,Fourier transforms infrared spectrometer and scanning electron microscope,and its water absorption and water retention properties were tested.The results showed that when the CMC dosage was 4g,the BP dosage was 5g,the PEGDE dosage was 13mL,and the reaction temperature was 60℃,the prepared CMC/BP water-absorbing resin had a water absorption rate of 21.1g/g,and a water retention rate of 55% after 120 hours of water absorption,achieving the best water absorption and water retention properties.