双酚A型氰酸酯树脂/端羧基丁腈橡胶共混物的结构与性能  

Study on Morphology and Properties of BCE/CTBN Blends

作　　者：朱雅红[1] 马晓燕[1] 姚雪莉[1] 黄韵[1] 

机构地区：[1]西北工业大学应用化学系

出　　处：《功能高分子学报》2005年第3期441-445,共5页Journal of Functional Polymers

基　　金：陕西省自然科学基金资助项目(N4CS0003)

摘　　要：用液体端羧基丁腈橡胶(CTBN)对双酚A型氰酸酯树脂(BCE)进行增韧改性,用红外光谱、扫描电子显微镜,动态力学能谱仪等分析手段表征共混物的微观结构,测定其力学性能、耐热性等.结果表明,CTBN增韧BCE树脂体系可形成典型的海岛状共混结构;当平均粒径为2～3μm时,增韧效果最佳;当CTBN加入10份时,冲击强度提高150%,最大失重率所对应的温度只下降3.5℃;动态力学性能分析证明BCE/CTBN共混物是一个多相体系,存在橡胶CTBN相、BCE相和以BCE为主的BCE/CTBN共聚相、以CTBN为主的BCE/CTBN共聚相.Bisphenol A dicyanate ester （BCE） has been modified by carboxyl terminal functionality on liquid butadieneacrylonitrile （CTBN）. Their structures and properties were studied with FTIR, SEM and DMA. The results proved that BCE/CTBN blends had traditional ＂sea-island＂ structure. The impact strength of BCE/CTBN blends is the best when particle diameter is between 2μm and 3μm. The impact strength of BCE/CTBN blends can be teased by 150% and the fastest decompose temperature of blends is only 3.5 ℃ less than neat BCE, when 10 phr. The DMA results proved that BCE/CTBN blends had multiphase.

关 键 词：氰酸酯 丁腈橡胶 增韧 

分 类 号：O631[理学—高分子化学]