促进剂种类对EP／PN体系固化反应动力学的影响  

Infl uence of Accelerant Species on Curing Reaction Kinetics of EP/PN Blends

作　　者：唐卿珂 梁国正[1] 易强[2] 肖升高 黄琴琴[2] 

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123 [2]苏州生益科技有限公司,江苏苏州215024

出　　处：《工程塑料应用》2014年第8期94-97,共4页Engineering Plastics Application

摘　　要：在一定比例的环氧树脂(EP)和线型酚醛树脂(PN)固化剂中加入丁酮溶解好的促进剂,制备了EP/PN体系。研究了不同促进剂对于EP/PN体系的固化反应动力学的影响。研究结果表明,2-乙基-4-甲基咪唑(2E4MZ)和三苯基膦(TPP)均可加速EP/PN体系的固化。使用外推法确定两体系的凝胶温度、固化温度和后处理温度等特征温度,发现2E4MZ促进的固化体系其凝胶温度较低,而固化温度和后处理温度略高。同时利用Kissinger方程和Ozawa方程计算出2E4MZ促进体系的平均表观活化能为74.92 kJ/mol,TPP促进体系的平均表观活化能为78.59 kJ/mol。EP / PN blends were prepared based on a certain proportion of （EP） and phenol formaldehyde （PN） curing agent, by adding accelerator butanone dissolves well. The influence of different accelerant, 2-ethyl-4-methyl imidazole（2E4MZ） and triphenyl phosphorous（TPP）, on curing reaction kinetics of EP / PN system was investigated. The results show that both 2E4MZ and TPP can improve the reactivity of EP / PN system. The proper gelling temperature, curing temperature and treating temperature were calculated by extrapolating method. It was found that 2E4MZ promoted curing system had lower gel temperature, and had slightly higher curing temperature and treating temperature. Then, the curing reaction kinetic parameters, such as apparent activation energy were calculated by Kissinger and Ozawa equations. The average apparent activation energy of EP / PN blends with 2E4MZ accelerator is 74.92 kJ/mol, the average apparent activation energy of EP/PN blends with TPP accelerator is 78.59 kJ/mol.

关 键 词：环氧树脂 线型酚醛树脂 2-乙基-4-甲基咪唑 三苯基膦 固化反应动力学 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]