摘要
通过聚甲基三乙氧基硅烷(PTS)与环氧丙氧丙基三甲氧基硅烷缩合产物对线型酚醛树脂进行接枝改性,并将其改性产物用于固化环氧树脂。通过制备一系列不同比例改性酚醛树脂并分别与环氧树脂固化。所得的环氧固化产物进行冲击强度、玻璃化转变温度、热失重等测试,结果表明,改性固化产物比未改性固化产物玻璃化转变温度提高了约30℃,冲击强度最高提高了36.6%,高温热稳定性也显著增强。改性产物实现了热稳定性和韧性的综合提升。
Novolac resin was modified by the grafting reaction with the condensation product of polymethyl triethoxy silane（PTS） and ethoxy-propoxy-propyl-trimethoxy silane,which could be used for curing epoxy resin.The different modified novolac resins were prepared from the different ratio of materials and cured with epoxy resins.The cured products were tested by the impact strength,glass transition temperature and thermogravimetric analysis.Results showed that the glass transition temperatures of modified cured products was 30 ℃ higher than the pure product.The impact strength increased more than 36.6%,and the thermal stability was improved.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2010年第9期918-921,共4页
Fine Chemicals
关键词
环氧树脂
酚醛树脂
有机硅
耐热
增韧
粘合剂
epoxy resin
novolac resin
organosilicon
thermal stability
toughness
adhesives
