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一种由双酚A二缩水甘油醚和双酚A组成的用于环氧/玻璃或环氧/碳纤维复合材料的模型复合物体系进行了研究.用富里叶转换红外光谱(FT-IR)在现场研究了该体系的化学动力学.从这些信息中测得反应的活化能和环氧浓度的转化速率.动态力学谱分析用来研究该体系在反应过程中的流变行为和产物的交联网络结构.另外,凝胶渗透色谱(GPC)用来分析固化反应过程中发生的分子量分布的变化,并以此来确定化学结构与流变数据之间的相互关系.这种反应体系动力学的基础研究可以作为选择RIM拉挤工艺的参数及预测对整个挤过程和复合材料性能的影响.
A model complex system for epoxy / glass or epoxy / carbon fiber composites composed of bisphenol A diglycidyl ether and bisphenol A was investigated using Fourier transform infrared spectroscopy (FT-IR) The chemical kinetics of the system were investigated in situ and the activation energy of the reaction and the conversion rate of the epoxy concentration were measured from these information.Dynamics spectrum analysis was used to study the rheological behavior of the system during the reaction and the crosslinking of the product In addition, gel permeation chromatography (GPC) is used to analyze the changes in the molecular weight distribution that occur during the curing reaction and to determine the correlation between the chemical structure and the rheological data. This kinetic Basic research can be used as a parameter to select the RIM pultrusion process and to predict the impact on the overall extrusion process and composite properties.