摘要
研究了催化剂、固化时间和温度对环氧树脂(EP)或丁腈橡胶(A)改性氰酸酯树脂(CE)固化反应的影响以及CE/A膜性能。不含催化剂的CE/EP体系160℃不能有效固化,而含有二月桂酸二丁基锡(B)的CE/EP体系能有效固化,且固化反应速度随着B用量增加而提高。CE/A/B体系的固化程度随着固化时间延长和温度升高而提高。CE/EP/B体系的固化温度比CE/EP体系明显降低,其下降幅度随着B用量增加而提高。CE/A/B体系固化温度比CE/EP/B体系低。A用量增加,改性CE膜的冲击强度和柔韧性提高,但它的热分解温度和抗湿性下降。
Effects of catalyst,curing time and curing temperature on curing reaction of cyanate ester resin（CE） modified by epoxy resin（EP） or chemigum（A） and properties of CE/A films were studied.The CE/EP system without catalyst could not be cured at 160 ℃,while the CE/EP system with dibutyltion dilaurate（B） could be cured effectively and the curing rate increased with increasing the B content.The curing degree of CE/A/B system increased with increasing the curing time and curing temperature.Compared with that of CE/EP system,the curing temperature of CE/EP/B system decreased markedly,and the dropped extent increased with increasing the B content.The curing temperature of CE/A/B system was lower than that of CE/EP/B system.With increasing the A content,both the impact strength and flexility of modified CE film were improved,respectively,while the temperature of thermal decomposition decreased and the ability to resist humidity was decreased.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第5期105-107,共3页
Polymer Materials Science & Engineering
作者简介
通讯联系人：吴石山，主要从事高分子材料改性及复合材料研究，E-mail：shishanwu@yahoo．com．cn
