弹性体增韧氰酸酯树脂的研究  

STUDY ON TOUGHENING MODIFICATION OF CYANATE ESTERS BY ELASTOMERS

作　　者：朱雅红[1] 马晓燕[1] 黄韵[1] 姚雪莉[1] 付军[1] 

机构地区：[1]西北工业大学理学院应用化学系,西安710072

出　　处：《工程塑料应用》2005年第1期19-22,共4页Engineering Plastics Application

基　　金：陕西省自然科学基金资助项目(N4CS0003);西北工业大学研究生创业种子基金资助项目(Z20040060)

摘　　要：采用一种聚醚型聚氨酯和两种聚酯型聚氨酯与一种端羧基丁腈橡胶对氰酸酯树脂进行共混改性,利用 扫描电子显微镜、热重分析法等手段表征改性后共混物的结构,测定了力学性能、耐热性能等。结果表明,几种弹性 体与氰酸酯共混后均可形成典型的海岛状结构;聚醚型聚氨酯较聚酯型聚氨酯增韧效果好;而丁腈橡胶较聚氨酯有 更好的增韧效果。当加入10份端羧基丁腈橡胶时,冲击强度提高了150%,热变形温度只下降10℃,最大失重率所 对应的温度只下降3℃。Cyanate esters(CE) are modified by four kinds of elastomers (E), which are one kind of polyether based polyurethane, two kinds of polyester based polyurethane and one kind of CTBN. Their structures are characterized with SEM and TGA, and the mechanical property and heat resistance are determined. The results proved that the E/CE blends have traditional “sea island” structure. The polyether based polyurethane is better than the polyester based on toughening effects and CTBN is better than polyurethane. The impact strength of CE/CTBN blends can be increased by 150%. The decrease of the heat deformation temperature is only 10℃. The temperature of maximum weight loss rate only decreases 3℃.

关 键 词：氰酸酯树脂 弹性体增韧 端羧基丁腈橡胶 聚酯型聚氨酯 聚醚型 热变形温度 共混改性 效果 下降 研究 

分 类 号：TQ323[化学工程—合成树脂塑料工业] TQ433.437