芳纶纤维增强聚硅氧烷复合材料的制备及性能研究  

Study on Preparation and Performance of Aramid Fiber Reinforced Polysiloxane Composites

作　　者：马林刚 章跃洪[2] 杨金林[3] MA Lin-gang;ZHANG Yue-hong;YANG Jin-lin(Zhejiang Yongkang Vocational&Technical School,Yongkang 321300,China;Jinhua Polytechnic,Jinhua 321000,China;Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江省永康市职业技术学校,浙江永康321300 [2]金华职业技术学院,浙江金华321000 [3]浙江理工大学,浙江杭州310018

出　　处：《塑料科技》2021年第5期24-26,共3页Plastics Science and Technology

摘　　要：选用芳纶纤维作为增强体提高聚硅氧烷的力学性能,通过将聚硅氧烷前驱体和芳纶纤维进行混合后加热固化获得聚硅氧烷/芳纶纤维复合材料。结果表明:按照不同的芳纶纤维掺入比例所制备的聚硅氧烷复合材料形貌和力学性能各不相同。聚硅氧烷前驱体制备比例不同导致聚硅氧烷的形貌和力学性能不同。含氢硅油比例过高导致聚硅氧烷变成质地较脆的多孔结构,而HPSO含量较低则会容易导致前驱体交联反应不完全,导致聚硅氧烷力学强度较低。芳纶纤维的添加量同样会对聚硅氧烷的力学性能产生影响。适宜的前驱体比例以及芳纶纤维加入量可以制备出形貌和力学性能较佳的复合材料。The aramid fiber is selected as the reinforcement to improve the mechanical properties of the polysiloxane, and the polysiloxane/aramid fiber composite material is obtained by mixing the polysiloxane precursor and the aramid fiber and then heating and curing. The results show that the morphology and mechanical properties of polysiloxane composites prepared according to different aramid fiber blending ratios are different. The different preparation ratios of polysiloxane precursors lead to different morphologies and mechanical properties of polysiloxanes. Too high proportion of hydrogencontaining silicone oil causes polysiloxane to become a brittle porous structure, while low HPSO content will easily lead to incomplete cross-linking reaction of the precursor, resulting in lower mechanical strength of polysiloxane. The addition of aramid fiber will also affect the mechanical properties of polysiloxane. A suitable precursor ratio and aramid fiber addition amount can prepare composite materials with better morphology and mechanical properties.

关 键 词：聚硅氧烷 芳纶纤维 前驱体 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]