环氧树脂/对甲基苯基双胍固化反应动力学研究

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (12): 53-59.

环氧树脂/对甲基苯基双胍固化反应动力学研究

何自强, 张惠玲

武汉生物工程学院化学与环境工程系,武汉 430415

收稿日期:2015-07-20 出版日期:2015-12-28 发布日期:2021-09-14
作者简介:何自强(1976-),男,硕士,讲师,主要从事精细化工方面的研究。
基金资助:
武汉市教育局资助项目(2011077)

STUDY ON CURING REACTION OF EPOXY RESIN WITH p-TOLYBIGUANIDE

HE Zi-qiang, ZHANG Hui-ling

Department of Chemical and Environmental Engineering, Wuhan Bioengineering Institute, Wuhan 430415, China

Received:2015-07-20 Online:2015-12-28 Published:2021-09-14

摘要/Abstract

摘要： 根据非等温和等温DSC数据,采用等转化率法和模型拟合法对环氧树脂/对甲基苯基双胍体系的固化反应过程进行了研究,分析了固化体系在非等温和等温条件下的固化规律。并通过Malek最大概然函数机理法确定了固化反应机理函数,计算出固化反应动力学模型参数。结果表明,考虑了扩散影响的等温自催化反应速率模型对该体系等温固化过程的预测数据与DSC实验数据吻合得更好。同时,在比较非等温和等温自催化动力学模型的计算值与实验值的基础上,结合活化能随固化度的变化规律,对不同温度条件、不同转化率下固化体系的反应历程和机理进行分析,为工业应用中固化工艺条件的优化提供了理论依据。

关键词: 环氧树脂, DSC分析, 固化反应, 反应动力学

Abstract: The nonisothermal and isothermal curing processes of epoxy resin with p-Tolybiguanide were investigated using isoconversional methods and model-fitting methods based on differential scanning calorimetry (DSC). The kinetic mechanism function and kinetic parameters of curing reaction are determined using the most probability mechanism function method developed by Malek. The result show that the values predicted by advanced autocatalytic model with consideration of diffusion-controlled mechanisms tended to match the isothermal curing experimental values. Moreover, curing procedures and mechanism of different temperature programs and different curing degree were discussed on the base of the activation energies varying with curing degree and the comparison of values calculated by autocatalytic models and experimental values. Furthermore, the kinetic research provides theoretical basis for the optimization of the curing process.

Key words: epoxy resin, DSC, curing reaction, reaction kinetics

中图分类号:

何自强, 张惠玲. 环氧树脂/对甲基苯基双胍固化反应动力学研究[J]. 复合材料科学与工程, 2015, 0(12): 53-59.

HE Zi-qiang, ZHANG Hui-ling. STUDY ON CURING REACTION OF EPOXY RESIN WITH p-TOLYBIGUANIDE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(12): 53-59.

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