A new type of phosphoric acid-based geopolymer plant fiber composite material was prepared by using metakaolin and fir fiber as the main raw materials,combined with an acidic activator.Through controlled variable experiments,the regulatory effects of different H3PO4/Al2O3 molar ratios and fiber contents on the mechanical properties of phosphoric acid-based geopolymer composites were systematically investigated,and the microstructure of the composites was characterized.The results indicated that the composite exhibited optimal static bending intensity and internal bond strength when the H3PO4/Al2O3 molar ratio was 2.0 and the fiber content was 10%.Thermogravimetric analysis revealed that fiber-reinforced geopolymers demonstrated higher net weight loss compared to pure geopolymers due to the degradation of fir fibers.
[1] Davidovits J.Geopolymers and geopolymeric materials[J].Journal of Thermal Analysis,1989,35(2):429-441.
[2] Davidovits J.Goeppolymers:inorganic polymeric new materials[J].Journal of Thermal Analysis,1991,37(8):1633-1656.
[3] 禤小欣,谈建立,黄远添,等.地聚物基甘蔗渣纤维复合材料的制备及其抗冻性能研究[J].硅酸盐通报,2020,39(2):532-536.
[4] 包申旭,周海林,张一敏,等.地质聚合物的制备与应用研究现状[J].有色金属(冶炼部分),2024(5):126-135.
[5] Wang Y S,Alrefaei Y,Dai J G.Silico aluminophosphate and alkali-aluminosilicate geopolymers:a comparative review[J].Frontiers in Materials,2019,6:106.
[6] Nematollahi B,Sanjayan J,Qiu J,et al.High ductile behavior of a polyethylene fiber-reinforced one-part geopolymer composite:a micromechanics-based investigation[J].Archives of Civil & Mechanical Engineering,2017,17(3):555-563.
[7] Zhang H,Hu F,Duan Y,et al.Mechanical properties and microstructure of highly flowable geopolymer composites with low-content polyvinyl alcohol fiber[J].Buildings,2024,14:2-19.
[8] 杨秋宁,娄亮,张天昊,等.玄武岩纤维改性煤矸石-矿渣基地聚物胶砂的性能研究[J].安全与环境学报,2025,25(4):1593-1602.
[9] Zahid M,Khan M I,Shafiq N,et al.Achieving superior mechanical performance in one-part geopolymer composites through innovative hybrid fiber systems of recycled steel and PVA fibers[J].Journal of Materials Research and Technology,2024,33:1772-1787.
[10] Jacobson K,Strassler S,Spalt C,et al.Effect of fiber/matrix interface modification on basalt fiber reinforced geopolymer composites[J].Recent Progress in Materials,2021; 3(1):2-21.
[11] Khater H M,Sayed E M.Performance optimization of water-cooled slag-metakaolin geopolymer composites with polypropylene fiber reinforcement[J].Structural Engineering and Mechanics,2025,93(1):33-40.
[12] Rashidian-Dezfouli H,Rangaraju P R,Kothala V S K.Influence of selected parameters on compressive strength of geopolymer produced from ground glass fiber[J].Construction & Building Materials,2018,162:393-405.
[13] Kant L,Kumar S,Kumar S,et al.Enhancement of mechanical strength in lightweight EPS geopolymer composites using coconut fiber[J].Engineering Research Express,2024,6:1-14.
[14] 周圣杰,樊亮,张岩,等.不同植物纤维对地质聚合物物理特性的影响[J].交通节能与环保,2021,17(6):100-106.
[15] Elshaeva D.Composition,structure and properties of geopolymer concrete dispersedly reinforced with sisal fiber[J].Buildings,2024,14:1-23.
[16] 聂嘉昕,牛相杰,王肖凯,等.植物纤维增强地质聚合物材料力学性能研究[J].山东化工,2024,53(2):73-75,81.
[17] 黄远添.地聚物基植物纤维复合材料的制备及其性能研究[D].南宁:南宁师范大学,2021.
[18] Amalia F,Akifah N,Nurfadilla,et al.Development of coconut trunk fiber geopolymer hybrid composite for structural engineering materials[J].IOP Conference Series:Materials Science and Engineering,2017,180:12-14.
[19] Tchakouté H K,Rüscher C H,Kamseu E,et al.Influence of the molar concentration of phosphoric acid solution on the properties of metakaolin-phosphate-based geopolymer cements[J].Applied Clay Science,2017,147:184-194.
[20] Simonsen M E,Camilla Sønderby,Li Z,et al.XPS and FT-IR investigation of silicate polymers[J].Journal of Materials Science,2009,44(8):2079-2088.
[21] Cao Deguang,Su Dageng,Lu Bo,et al.Synthesis and structure characterization of geopolymeric material based on metakaolinite and phosphoric acid[J].Journal of the Chinese Ceramic Society,2005,33(11):1385-1389.
[22] 禤小欣.磷酸基地聚物杉木纤维复合材料的制备及其性能研究[D].南宁:南宁师范大学,2020.
基金资助
2023年度广西壮族自治区高校中青年教师科研基础能力提升项目(2023KY0730);2023年度贺州学院本科教学改革工程项目(hzxyybjg202301);广西壮族自治区自然科学基金面上项目(2025GXNSFAA069732);广西壮族自治区科技计划项目(桂科AD23026079);国家环境保护矿冶资源利用与污染控制重点实验室开放基金项目(HB202202);贺州市科学研究与技术开发项目(贺科技2024118);2024年度广西壮族自治区高等教育本科教学改革工程项目(2024JGZ159)
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