文献类型：期刊文献

中文题名：支链型硅烯炔树脂的合成与性能

英文题名：Synthesis and Performances of Branched Silicon-containing Arylethyleneacetylene Resin

作者：陈雨生[1];邓诗峰[1];王雪闪[1]

机构：[1]华东理工大学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：2020

卷号：38

期号：2

起止页码：274

中文期刊名：材料科学与工程学报

外文期刊名：Journal of Materials Science and Engineering

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：支链型硅烯炔树脂;锌粉;甲基三氯硅烷;耐高温树脂

外文关键词：BSA resin;Zinc powder;Methyltrichlorosilane;Heat-resistant resin

摘要：以二乙炔基苯(DEB)和甲基三氯硅烷(MTS)为原料,锌粉作催化剂,合成了一种支链型硅烯炔树脂(Branched Silicon-containing Arylethyleneacetylene Resin,BSA)。研究表明,最优反应条件为:物料摩尔配比二乙炔基苯比甲基三氯硅烷为9∶4,80℃温度下回流反应10h,合成树脂的产率达82.4%。树脂在130℃下就可发生固化交联反应,粘度较低,具有良好的加工性能;BSA树脂固化物具有良好的热稳定性,N2氛围下质量分解5%时的温度Td5达到567℃,800℃时质量残留率约为90%。
As a new method of silylation,zinc catalyst has the advantages of simple process,short production cycle,mild reaction condition.However,the thermal stability of the resin is lower than the product catalyzed by Grignard reagents due to terminal ethylene of resin.In order to improve the thermal stability and processing property,Branched Silicon-containing Arylethyleneacetylene Resin(BSA) was prepared by diethynylbenzene and methyltrichlorosilane catalyzed by zinc power.Based on the results of research,we concluded that the optimum reaction conditions:acetonitrile as solvent,temperature of 80℃and reaction time of 10 h,molar ratio of diethynylbenzene and methyltrichlorosilane of 9∶4,and the reaction yield reaches up to82.4%.BSA resin is easily processed and could be cured at the temperature of about 130℃.Cured BSA resin possess excellent thermal stability,the temperature at 5% weight loss is 567℃,and char yield of the cured resin at 800℃ under nitrogen is 90%.