Preparation and performance characterization of polyurea
Fang Xin1,Xu Yingnan2,Hou Chuanjin1,Liu Yanjun1
1.School of Light Industry and Chemical Engineering,Dalian Polytechnic University, Dalian 116034;
2.Research and Development Department,Dalian Fluripu New Material Co.,Ltd., Dalian 116000
Abstract: Using isocyanate and polyurethane to produce polyurethane by rapid mixing has the advantages of environmental protection and stable performance.The effects of the type of polyurethane and the ratio of polyurethane on curing speed and properties of polyurethane,as well as the determination of viscosity and mechanical properties were investigated.The morphological structure and corrosion resistance of polyurea were tested by FT-IR,SEM,TGA,electrochemical workstation (EIS,Tafel).The results showed that,When polyether ammonia (Mw=2000),polyether polyamine (Mw=5000),epoxy resin curing agent (Mw=400),diethyl toluene diamine(Mw=100),N,N-dialkyl methyl diamine (Mw=6200) used as raw materials,the curing speed of polyurea obtained by the mass ratio of 2.6∶1.4∶2∶1.8∶2.2 was the fastest,the thermal stability was good,film forming continuous appearance was bright,the hardness was greater than shaoshi 50D,the tensile strength was greater than 20MPa,breaking elongation was greater than 245%,and tearing strength was greater than 20/(kN·m).The plate coated with polyurea had excellent corrosion resistance.
Li Lei,Zhang Aijuan,Yu Jianhui,et al.One-step preparation of hierarchically porous polyureas:simultaneous foaming and hyper-crosslinking[J].Polymer,2017,108:332-338.<br />
[2]
Li N,Ye G,Wang X G.Hollow microspheres of amphiphilic azo homopolymers self-assembly and photoinduced deformation behavior[J].Chem Commun,2011,47(16):4757-4759.<br />
Sui Yaguang,Zhang Dezhi,Tang Shiying,et al.Theoretical analysis of a reactive reinforcement method for cylindrical explosion-containment vessels[J].Journal of Pressure Vessel Technology,2015,137(1):6-11.<br />
[5]
Shukla P G,Jagtap S B,Biradar S C,et al.Preparation and characterization of microcapsules containing industrially important reactive water-soluble polyamine[J].Colloid and Polymer Science,2016,294(12):2039-2050.<br />
[6]
Huang T C,Yeh L C,Lai G H,et al.Electroactive polyurea/CNT composite-based electrode for detection of vitamin C[J].Express Polymer Letters,2016,10(6):450-461.<br />
[7]
Wazarkar K,Kathalewar M,Sabnis A.High performance polyurea coatings based on cardanoL[J].Progress in Organic Coatings,2017,106:96-110.<br />
[8]
Hannes Alex,Patrick Loos,Todor Baramov,et al.Polymer encapsulated cobalt based catalysts(Co EnCatTM) for selective continuous hydrogenation of 1-iodo-4-nitrobenzene[J].Chem Cat Chem,2017,9(16):3210-3217.<br />
Shen Zujian,Geng Fei,Fan Xinxin,et al.Effect of preparation process on elevated temperature tribological properties of composite polyurea grease[J].Industrial Lubrication and Tribology,2016,68(5):611-616.<br />
[13]
Lu Shaofeng,Shen Tianwei,Xing Jianwei,et al.Preparation,characterization,and thermal stability of double-composition shell microencapsulated phase change material by interfacial polymerization[J].Colloid and Polymer Science,2017,295(10):2061-2067.<br />
[14]
Grujicic M,Ramaswami S,Snipes J S,et al.Experimental and computational investigations of the potential improvement in helmet blast-protection through the use of a polyurea-based external coating[J].Multidiscipline Modeling in Materials and Structures,2016,12(1):33-72.<br />
Mott P H,Giller C B,Fragiadakis D,et al.Deformation of polyurea:where does the energy go?[J].Polymer,2016,105(10):227-233.<br />
[20]
Samulionis V,Svirskas ASˇG5,Banys J,et al.Ultrasonic and dielectric studies of polyurea elastomer composites with inorganic nanoparticles[J].Ferroelectrics,2015,479(1):67-75.<br />
[21]
Ichiura H,Yamamoto K,Ohtani Y.Polyurea films prepared by interfacial polymerization on a paper surface:sustained release of <i>N,N</i>-diethyl-3-methylbenzamide[J].Polymer Bulletin,2015,72(10):2621-2632.<br />