CW环氧树脂灌浆材料在三峡、葛洲坝和丹江口等水利工程中得到广泛应用,目前针对其固化动力学的试验研究鲜有报道。采用非等温DSC法对CW环氧树脂灌浆材料的固化反应过程进行了试验研究,获得了CW环氧树脂灌浆材料在5,10,15,20,25 K/min 5种升温速率条件下的DSC曲线。通过Kissinger方程和Crane方程,得到了固化反应的表观活化能E_a、表观频率因子A和反应级数n,并建立了针对CW环氧树脂浆液的n级固化动力学模型。该模型可以预测和分析CW环氧树脂灌浆材料固化反应特性,再结合试验数据,能够更好地指导浆液的改性理论研究和工程实践。

CW epoxy resin grouting material has been widely used in water conservancy projects such as Three Gorges Project, Gezhouba Project and Danjiangkou Project. At present, there are few studies on its curing kinetics. In this article, experiments were carried out to study the process of curing reaction of CW epoxy resin grouting material by using non isothermal DSC(Differential Scanning Calorimetry). The DSC curves at five different heating rates(5, 10, 15, 20, 25 K/min) were obtained. According to Kissinger function and Crane function, the apparent activation energy E_a, apparent frequency factor A and reaction order n of CW epoxy resin grouting material were obtained, and the n-tier curing kinetic model was established. The model can be used to predict and analyze the curing reaction characteristics of CW epoxy resin grouting material, and could guide the theoretical researches and engineering practice of the modification of grouting material combined with test data.