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OALib Journal期刊
ISSN: 2333-9721
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ctbn改性双酚a型氰酸酯树脂的性能
Keywords: 有机高分子材料,弹性体,增韧,ctbn
Abstract:
？为改善氰酸酯树脂的冲击韧性,在双酚a型二氰酸酯(badcy)树脂中混入了不同含量的端羧基丁腈橡胶(ctbn).用差示扫描量热法(dsc)及红外光谱法ftir)对ctnb/badcy共混体系的反应性研究发现,ctbn能促进badcy低温下的三嗪环反应,但是使badcy的后处理温度提高.sem分析表明,当ctbn的含量(质量分数)大于15%后,有ctbn颗粒从badcy中析出,形成两相结构,且随着ctbn含量的增大,分散相的粒径增大,在断口处产生的银纹和剪切带使badcy/ctbn共混体系的韧性提高.当ctbn的含量为25%时体系的冲击强度提高了2.3倍.
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