环氧树脂体系固化反应动力学特征  

Curing Kinetical Characteristics of Epoxy Resin System

作　　者：钱玉春[1] 陈拴发[2] 丛培良[2] 李祖仲[2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]长安大学材料科学与工程学院,陕西西安710061

出　　处：《郑州大学学报（工学版）》2012年第3期95-98,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(50978031)

摘　　要：采用非等温差式扫描量热方法(DSC)对双酚A型环氧树脂(E-51)与日本TAF环氧沥青(J-2)固化剂的固化反应动力学特征进行了研究.根据不同升温速率下环氧树脂体系固化反应的DSC曲线特征,通过n级自催化反应模型,求解出固化反应动力学参数,进而得到其固化反应动力学方程,探讨其固化反应机理.试验结果表明,通过固化反应动力学模型所得到的曲线与试验得到的DSC曲线吻合较好,所确立的模型在5～25 K/min的升温速率下能较好地描述环氧树脂体系固化反应过程,为研究环氧沥青固化机理提供理论基础,有利于制定和完善环氧沥青合理的固化工艺.The curing kinetics of bisphenol A based epoxy resins （ E - 51 ） and curing agent used in the TAF epoxy asphalt （J -2） was studied by non-isothermal differential scanning calorimetry （DSC） technique at dif- ferent heating rates. According to the DSC graphs, the kinetic parameters were obtained and the kinetic model of the curing process based on n order reaction equation was set up using Kissinger and Crane equation. The results showed that the curves calculated by the theoretical model show a good agreement with the curves ob- tained from the experimental data. Under the 5 ~ 25 K/min hating rates, the kinetic model can describe the curing process perfectly, lay a theoretical foundation for the curing mechanism of epoxy asphalt and provide the basis for the determine of the reasonable curing technology.

关 键 词：环氧树脂 固化机理 动力学模型 环氧沥青 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]