长链双马来酰亚胺改性氰酸酯树脂及其复合材料  

Long Chain Bismaleimide Modified Cyanate Ester Resin and Its Composites

作　　者：马鹏常[1] 刘敬峰[2] 范卫锋[2] 孟祥胜[2] 杨明[3] 

机构地区：[1]中山职业技术学院化学工程系,中山528404 [2]中国科学院长春应用化学研究所,长春130022 [3]北京航空材料研究院,北京100095

出　　处：《高等学校化学学报》2013年第8期1979-1984,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51173178);国家'九七三'计划项目(批准号:2010CB631100);广东省中科院全面战略合作项目(批准号:2011B090300037);中山市产学研结合项目(批准号:2012PT009)资助

摘　　要：制备了长链双马来酰亚胺改性的氰酸酯树脂及其复合材料,并对其进行了表征.结果表明,当长链双马树脂(MTHMI)占改性树脂的质量分数为37.5%时,改性树脂(MTI/T3)的5%热失重温度为414℃,复合材料在室温和200℃时的拉伸强度分别为431.2和331.0 MPa,弯曲强度分别为631.5和278.4 MPa,复合材料的X-Y轴热膨胀系数为18.1×10-6℃-1,吸湿率为1.4%.实验结果表明,该类树脂与普通双马改性氰酸酯树脂及分别由质量分数为20%和30%MTHMI改性的氰酸酯树脂MTI/T1和MTI/T2相比,具有良好的加工性,优异的耐热性和力学性能,较低的吸湿性和热膨胀系数.A kind of long chain bismaleimide-modified cyanate ester resin and the relevant composites were prepared and characterized. The results indicate that when the resin content of the long chain maleimide-terminated thioetherimide（MIMTI） reached 37.5%（mass fraction）, the T5%of the modified cyanate ester resin（MTI/T3） was 414℃. Tensile strength and flexural strength of the MTI/T3 composite were 431.2 and 331.0 MPa, 631.5 and 278.4 MPa at room temperature and 200℃, respectively. And its coefficient of thermal expansion（CTE） in X-Y axis and the moisture absorption were 18.1×10^-6℃^-1 and 1.4%, respectively. Compared to the common bismaleimide-modified cyanate ester resins, and the 20% and 30% MIMTI-modified cyanate ester resin MTI/T1 and MTI/T2, respectively, the obtained cyanate ester resin MTI/T3 exhibited good processing, excellent heat resistance and mechanical properties, low moisture absorption and low CTE.

关 键 词：氰酸酯树脂 双马来酰亚胺 力学性能 热膨胀系数 吸湿性 

分 类 号：O631[理学—高分子化学] TQ323[理学—化学]