环氧树脂封窜堵剂体系双阶段固化动力学分析*
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国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(项目编号2016ZX05053)。


Two-stage Curing Kinetics of Epoxy Resin Plugging Agent System
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    摘要:

    为研究热固性环氧树脂封窜堵剂的固化行为,精准预测封窜堵剂的固化过程,采用非等温差热扫描量热法 研究了环氧树脂封窜堵剂体系的固化反应动力学。利用Kissinger方程和双参数(m,n)自催化模型,对该体系进 行固化动力学拟合,计算固化动力学参数。结果表明,由环氧树脂和三乙醇胺组成的堵剂体系固化过程为双阶 段固化,即凝胶化阶段和固化阶段。通过拟合得到两个阶段的表观活化能分别为63.489、123.56 kJ/mol。固化阶 段的活化能是凝胶化阶段的2倍。对双阶段固化过程分别进行拟合得到的自催化动力学方程与实验数据的拟合 度良好,对环氧树脂封窜堵剂体系的应用具有指导意义。图10表3参18

    Abstract:

    In order to study and accurately predict the curing process and curing behavior of thermosetting epoxy resin plugging agent,the non-isothermal differential thermal scanning calorimetry was used to study the curing reaction kinetics of epoxy resin plugging agent system. The Kissinger equation and two-parameter(m,n)autocatalytic model were used to fit the curing kinetics of the system and calculate the curing kinetic parameters. The results showed that the curing process of the plugging agent system consisting of epoxy resin and triethanolamine was two-stage curing,which was a gelation stage and a curing stage. The apparent activation energy of the two stages obtained through fitting was 63.489 and 123.56 kJ/mol respectively. The activation energy in curing stage was twice bigger than that in gelation stage. The autocatalytic kinetic equation obtained from the two-stage curing process and the experimental data had a good degree of fit,which was instructive for the application of epoxy resin plugging agent system.

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  • 在线发布日期: 2019-05-10
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