文献类型：期刊文献

中文题名：含端炔硅烷偶联剂处理石英纤维对透波用QF/PSA复合材料界面影响

英文题名：Pretreatment of QF with terminalalkynes-containg silane coupling agent and properties of their PSA composites for wave-transmitting applications

作者：葛宇[1];扈艳红[1];杜磊[1]

机构：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2014

卷号：45

期号：20

起止页码：20078

中文期刊名：功能材料

外文期刊名：Journal of Functional Materials

收录：CSTPCD;;EI(收录号：20144800269699);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家自然科学基金资助项目(51073054);上海市重点学科资助项目(B502)

语种：中文

中文关键词：石英纤维;含硅芳炔;端炔硅烷偶联剂;复合材料;界面改性

外文关键词：quartz fiber;PSA;terminalalkynes silane coupling agent;composite;interfacial modification

摘要：运用一种结构中含有端炔的硅烷偶联剂(AG-2),提高透波用石英纤维(QF)/含硅芳炔树脂(PSA)复合材料的界面粘接,运用TGA、XPS、SEM、AFM、表面能分析等表征了偶联剂与纤维、树脂的相互作用。凝胶时间和TGA分析表明AG-2加入对PSA的高温性能影响不大;TGA、XPS、表面能匹配分析等推断AG-2的作用机理为偶联剂分别与纤维表面、树脂基体发生化学偶联,同时增大了QF的表面能,改善了与PSA的表面张力匹配;偶联剂处理后QF/PSA复合材料界面粘结强度增加,复合材料的力学性能提高,层间剪切强度(ILSS)和弯曲强度分别较未处理前提高了34.77%和38.30%。
A novel silane coupling agent(AG-2)containing terminalalkyne groups was synthesized and introduced to promote the interfacial bonding performance of QF/PSA composites.The interactions among the coupling agent,resin and matrix were characterized.FT-IR and1 H NMR spectra indicated the well preparation of AG-2.Gelation time and TGA analysis showed that heat-resistant performance of PSA was hardly influenced by AG-2.TGA,XPS,SEM and surface energy analyses inferred effective chemical bonds formed between fiber surface and AG-2 as well as the resin and AG-2.The surface energy of QF increased which made interface matched.Significant enhancement of ILSS and flexural strength of modified composite was achieved and promoted by 34.77%and 38.30%compared to those unmodified.