高含量GPTMS对玻璃纤维/环氧树脂复合材料脆性及吸水性能的影响  

Influence of high content GPTMS on the brittleness and water absorption of GF/EP composite

作　　者：孙家书 王继刚[3] 曹广秀[1,2] 翟滨 Sun Jiashu;Wang Jigang;Cao Guangxiu;Zhai Bin(College of Chemistry and Chemical Engineering,Shangqiu Normal U niversity,Henan Engineering Technology Research Center for Optoelectronic Functional Materials,Shangqiu 476000;Henan Key Lab Biomol Recognit&Sensing,Shangqiu 476000;School of Materials Science and Engineering,Southeast University,Nanjing 211189)

机构地区：[1]商丘师范学院化学化工学院,光电功能材料河南省工程技术研究中心,商丘476000 [2]生物分子识别与传感河南省重点实验室,商丘476000 [3]东南大学材料科学与工程学院,南京211189

出　　处：《化工新型材料》2020年第9期81-85,共5页New Chemical Materials

基　　金：国家自然科学基金(21371114,21571123,21601119);商丘师范学院博士科研启动基金(50017602)。

摘　　要：通过手糊的方法制备了γ-缩水甘油醚氧丙基三甲氧基硅烷(GPTMS)含量不同的玻璃纤维/环氧树脂(GF/EP)复合材料。结果表明:与未添加GPTMS的GF/EP复合材料相比,加入质量分数5%的GPTMS不仅提高了复合材料的机械性能,而且改善了其吸水性能。但是,随着GPTMS含量的增加,复合材料机械性能开始下降,吸水能力开始提升。玻璃纤维和环氧树脂界面结合强度的变化极大地影响了复合材料的机械性能和吸水量。此外,当GPTMS质量分数达到10%和15%时,可以明显观察到复合材料的脆-韧转变现象,这归因于复合材料自由体积的增加。Glass fiber-reinforced epoxy resin(GF/EP)composites containing different amounts ofγ-glycidyloxipropyltrimethoxysilane(GPTMS)were prepared by hand lay-up method.Experiment results indicated that the incorporation of 5 wt%GPTMS improved the mechanical properties and water absorption behaviours of GF/EP composites.However,with the amount of GPTMS increasing,the mechanical properties of the composites began to decrease and water adsorption capacity of the composites began to increase.The change of interfacial bonding strength between GF and EP greatly affected the mechanical properties and water adsorption of composites.Moreover,the brittle/tough transition phenomenon was observed for the composites that added 10 wt%and 15 wt%GPTMS,which can be explained by the variation of free volume.

关 键 词：玻璃纤维/环氧树脂复合材料 机械性能 脆-韧转变 吸水性能 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]