【摘要】 用 DSC,介电和动态力学等分析方法研究了组成对乙酰丙酮过渡金属络合物催化促进的环氧树脂与氰酸酯共固化反应体系反应动力学参数 ,固化产物力学、电气和耐热性能以及玻璃化转变温度的影响。结果表明 ,随着共固化反应体系中氰酸酯含量的增加 ,其表观反应活化能和频率熵因子均随之升高 ;在相同的固化条件下 ,共固化产物中三嗪环结构含量增加 ,聚醚结构减少 ,玻璃化转变温度升高 ,耐热性能、介电性能提高更多还原

【Abstract】 The influence of composition on the curing kinetic parameter, electrical, mechanical, thermal properties and the glass transition temperature ( T g) of epoxy and cyanate ester co curing system catalyzed by transition metal acetylacetone(M T(atat) n ) was studied by means of DSC,dielectric and dynamic mechanical methods in this paper. The results showed that the reactive activation energy ( E a) and frequency factor ( A ) of the co curing is found to increase with enhanced concentrations of cyanate of the co curing system. The glass transition temperature ( T g) and thermal stability of the cyanate and epoxy cured system is found to increase with enhanced concentrations of cyanate in the same cured condition; addition of the cyanate will decrease the loss factor, and dielectrical value as well.更多还原