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CYANATE ESTERS MODIFIED BY CARBOXYL-TERMINATED LIQUID BUTADIENE-ACRYLONITRILE
Author(s): Wang Jieliang, LIANG Guozheng, ZHAO Wen, U Shenghua, REN Penggang, YANG Jieying
Pages: 1-
5
Year: 2005
Issue:
1
Journal: ACTA MATERIAE COMPOSITAE SINICA
Keyword: 氰酸酯树脂; CTBN; 增韧改性;
Abstract: 采用液体端羧基丁腈橡胶对双酚A型氰酸酯树脂进行增韧改性,通过对体系凝胶曲线和DSC曲线分析,确定了体系的固化条件,并在与纯CE比较的基础上,通过FTIR和DSC曲线知道了CTBN在低温阶段对体系固化有较为明显的影响,而在高温阶段对CE固化影响较小.通过对固化树脂微观性能、力学性能和电性能的观测,发现当CTBN含量为15%时,改性体系的弯曲强度和冲击强度分别提高了39.47%和21. 92%,改性体系综合力学性能最佳,但电性能稍有下降.另外,固化树脂的TGA曲线和HDT曲线表明树脂的耐热性能随着CTBN用量的增大而下降,当CTBN含量从0提高到15%时,树脂体系的起始分解温度从407℃降低到383℃.
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