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 Ea, 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.
Key words
CW epoxy resin /
grouting material /
curing reaction /
curing kinetics /
curing degree
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References
[1] 魏 涛,汪在芹,韩 炜,等.环氧树脂灌浆材料的种类及其在工程中的应用[J].长江科学院院报, 2009,26(7):69-72.
[2] 汪在芹,魏 涛,李 珍,等.CW系环氧树脂化学灌浆材料的研究及应用[J].长江科学院院报,2011,28(10):167-170.
[3] 刘崇熙,汪在芹.坝工混凝土耐久寿命的现状和问题[J].长江科学院院报,2000,17(1):17-20.
[4] 张 竞,黄 培.环氧树脂固化动力学研究进展[J].材料导报,2009,23(7):58-61,81.
[5] 王 焱,王先胜,陈海生.等温DSC法研究树枝状大分子PAMAM与环氧树脂的固化反应动力学[J].高分子学报,2006,(5):727-731.
[6] 毛如增,冀克俭,张银生,等.DSC法测定环氧树脂固化反应温度和反应热[J].工程塑料应用,2002, 30(11):36-39.
[7] 张 超.酚醛树脂的固化动力学研究[D].武汉:武汉理工大学,2010.
[8] 郑 澎,张彦飞,赵贵哲,等.风电叶片用环氧树脂固化动力学特性及力学性能的研究[J].玻璃钢/复合材料,2011,(2):8-11.
[9] 李 恒,王德海,钱夏庆.非等温DSC法研究环氧树脂体系固化动力学[J].固体火箭技术,2013, 36(2):266-269.
[10]曾秀妮,段跃新.840S环氧树脂体系固化反应特性[J].复合材料学报,2007,24(3):100-104.
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