快速RTM成型工艺用环氧树脂化学流变及固化行为研究

摘要

This paper studies on the chemical rheological behavior and curing of epoxy resin in rapid RTM pro-cess. According to the rheological behavior, it is found that the resin molding window can be effectively pre-dicted by Arrhenius viscosity-temperature equation. According to the curing behavior, analysis via the Malek-Flynn-Wall-Ozawa method leads to a conclusion that resin curing process is an autocatalytic reaction. By employing Sestak-Berggren two-parameter autocatalytic model in curing analysis, it shows that the theoretical curve coincides well with the experimental data, which provides theoretical and technical support for the pa-rameter optimization in rapid RTM process.%针对快速RTM成型工艺对树脂性能的要求，研究了环氧树脂的化学流变行为和固化行为。根据其流变行为，发现采用双Arrhenius黏度模型方程可以有效预测树脂的成型工艺窗口；根据其固化反应行为，通过Malek方法，确定树脂体系的固化反应为自催化反应，采用Sestak-Berggren双参数自催化动力学模型对其固化行为进行分析，发现模型曲线与实验曲线基本吻合。研究结果为快速RTM成型工艺参数的确定提供技术基础和理论依据。