摘要
以2,3-丁二酮为原料,通过卤化等反应得到2,2′-二氨基-4,4′-双噻唑(DABT),再由甲苯共沸法制备了含联噻唑环的双马来酰亚胺单体(BMI),并采用红外光谱对新型BMI的结构进行了表征。运用经典热力学方程对BMI/4,4-二氨基二苯甲烷(DDM)/环氧树脂EP-51(EP)固化物热分解动力学进行研究,求出其参数。结果表明,不同速率扫描法求得的BMI/DDM/EP固化物热分解的表观活化能较为接近,Friedman法,K-A-S法和Ozawa法活化能分别为129.21,131.81和134.40 k J/mol,通过Coast-Redfer法得到BMI/DDM/EP固化物热分解机理函数为G(α)=[-ln(1-α)
The 2,2′-Diamino-4,4′ bithiazole(DABT)was obtained by halogenation reaction with 2,3-butanedione as starting materials and then the bismaleimide containing bithiazole(BMI)was synthesized by the azeotropic distillation using toluene as solvent.The structures of the new BMI were characterized by FTIR. The thermal decomposition kinetics of BMI/DDM/EP cured product was investigated by the classical thermodynamics equation and the kinetic parameters were obtained. The results showed that the apparent activation energy values of BMI/DDM/EP cured product obtained by different multi-rate scanning methods were closer. The activation energy values were 129.21,131.81 and 134.40 k J/mol,respectively by Friedman method,K-A-S method and Ozawa method. The thermal decomposition kinetic equation by Coast-Redfer method could be expressed as G(α)= [-ln(1- α)]4
出处
《热固性树脂》
CAS
CSCD
北大核心
2015年第4期14-18,共5页
Thermosetting Resin
基金
沈阳市高性能化塑料工程重点实验室项目(F13-286-1-00)资助
