表面接枝TiO_2/CE基复合材料固化动力学及耐热性能研究

Property test of curing kinetics and heat resistance by grafting modification onto anatase TiO_2 and its effect on disoersion property of CE compostie material

通过多步接枝工艺制备了系列二氧化钛粒子(M系列粒子)/氰酸酯树脂(CE)基复合材料,总结了制备最佳工艺条件,讨论了复合材料的固化动力学、耐热性能,分析了复合材料微观形貌变化与性能提升之间的联系。结果表明,M系列粒子的引入,在降低复合材料活化能,有利于固化成型的同时,未改变固化机理。少量M-2粒子的引入,使CE的耐热性能大为改善。当M-2粒子含量为4%(质量分数)时,实验数据表明,储能模量增幅为60%,玻璃化温度增幅为12%。

A series of titanium dioxide particles（M-series particles）/cyanate ester resin（CE）-based composites was prepared through a multi-step grafting method.The reasons of composite＇s curing kinetics and heat resistance were improved were discussed.The results showed that the introduction of M-series particles in composites reduced the activation energy and conducive composites curing,while the composites curing mechanism was not changed.The composites with Mseries particles content up to 4%,the storage modulus and loss modulus of composites were improved,the glass transition temperature and storage modulus were increased to 12%and 60%,respectively,which revealed in determination of dynamic mechanical performance parameters.What＇s more the heat resistance was improved.