文献类型：期刊文献

中文题名：苯并噁嗪对环氧树脂体系热稳定性的影响及其作用机理

英文题名：Effect of benzoxazine on the epoxy resin systems'thermal stability and its mechanism

作者：吴唯[1];姜晨晨[1];朱送伟[1];李宁[1]

机构：[1]华东理工大学材料科学与工程学院,中德先进材料联合研究中心,上海200237

年份：2016

卷号：39

期号：2

起止页码：242

中文期刊名：固体火箭技术

外文期刊名：Journal of Solid Rocket Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：苯并噁嗪;环氧树脂;热稳定性;机理

外文关键词：benzxazine;epoxy resin;thermal stability;mechanism

摘要：通过向EP/MNA体系中添加苯并噁嗪,制备出EP/MNA/8280N75混合体系的环氧树脂固化物,研究了苯并噁嗪对EP/MNA体系的热性能的作用及机理。热重分析(TGA)与差示扫描量热仪(DSC)结果表明,在苯并噁嗪的添加量为40分时,在体系固化温度提高较小的情况下,较大程度地提高分解温度至310℃左右和残炭量19.8%;傅立叶红外光谱(FTIR)的结果反映出体系反应机理,由于苯并噁嗪分子中苯环较多,同时C—O—C开环生成羧基能与环氧基团反应,形成了致密度很高的交联网状结构,所以苯并噁嗪明显提高了环氧树脂体系的高温稳定性。
The EP/MNA/8280N75 epoxy resin system was made through adding benzoxazine into the EP/MNA system.The effect of benzoxazine on thermal property of EP/MNA system and its mechanism were researehed.According to Thermo-gravimetric analysis(TGA)and differential scanning calorimeter(DSC),when adding benzoxazine at 40%of epoxy resin,the decomposition temperature increased to about 310~C and the residue increased to 19.8%with the curing temperature increasing a little.Fourier Transform Infrared Spectroscopy(FT-IR)indicated the reaction mechanism which formed cross-linked structure with a high density.It could be attained because of the benzene rings in benzxazine molecule and the C--O--C rings opening reaction with epoxy.The results show that benzoxazine improves the thermal stability under a high temperature.