摘要
为提高苯并噁嗪树脂的耐高温性能,以水杨醛、对氨基苯酚、环三磷腈衍生物为原料通过多步反应制备了环三磷腈基苯并噁嗪单体(CPBOZ),通过核磁共振(1 H-NMR、31 P-NMR)和傅里叶红外光谱(FT-IR)对所合成化合物的结构进行了表征;利用FT-IR和热重分析(TGA)考察了苯并噁嗪的固化行为及树脂的热稳定性。结果显示:环三磷腈结构的引入,显著提高了相应苯并噁嗪树脂的耐热性,其固化后失重率为5%和失重率为10%时的温度分别达到了365℃和397℃;在900℃(N2)时的失重率达到了48.2%,比普通苯并噁嗪树脂提高了约65.64%。
To improve the high temperature resistance of benzoxazine resin,the cyclotri-phosphazene-based benzoxazine monomer（CPBOZ）was synthesized with salicylaldehyde,para aminophenol and cyclicphosphazene derivatives as raw material.The structure of prodcuts were characterized by ^1 H-NMR,^31 P-NMR and IR spectra.The cured behavior of CPBOZ were investigated by TGA and IR.The results showed that the thermal stability of resin was improved significantly with the introducing of cyclic phosphazene.At last,measuring by TGA indicated that the 5% and 10% decomposition temperatures of polymer were 365℃and 397℃,and it achieved a char yield as high as 48.2%at 900℃ under nitrogen environment which was 65% higher than that of the normal benzoxazine.
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第7期120-122,共3页
New Chemical Materials
关键词
苯并噁嗪
环三磷腈
热稳定性
失重率
benzoxazine
cyclotriphosphazene
thermostability
char yield
