| 环氧树脂体系固化反应动力学特征 |
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| 引用本文： | 钱玉春,陈拴发,丛培良,李祖仲.环氧树脂体系固化反应动力学特征[J].郑州大学学报(工学版),2012,33(3):95-98. |
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| 作者姓名： | 钱玉春 陈拴发 丛培良 李祖仲 |
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| 作者单位： | 1. 长安大学 公路学院,陕西西安,710064
2. 长安大学 材料科学与工程学院,陕西西安,710061 |
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| 基金项目： | 国家自然科学基金资助项目(50978031) |
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| 摘 要： | 采用非等温差式扫描量热方法(DSC)对双酚A型环氧树脂(E-51)与日本TAF环氧沥青(J-2)固化剂的固化反应动力学特征进行了研究.根据不同升温速率下环氧树脂体系固化反应的DSC曲线特征,通过n级自催化反应模型,求解出固化反应动力学参数,进而得到其固化反应动力学方程,探讨其固化反应机理.试验结果表明,通过固化反应动力学模型所得到的曲线与试验得到的DSC曲线吻合较好,所确立的模型在5～25 K/min的升温速率下能较好地描述环氧树脂体系固化反应过程,为研究环氧沥青固化机理提供理论基础,有利于制定和完善环氧沥青合理的固化工艺.
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| 关 键 词： | 环氧树脂 固化机理 动力学模型 环氧沥青 |
Curing Kinetical Characteristics of Epoxy Resin System |
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| QIAN Yu-chun
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CHEN Shuan-fa
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CONG Pei-liang
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LI Zu-zhong.Curing Kinetical Characteristics of Epoxy Resin System[J].Journal of Zhengzhou University: Eng Sci,2012,33(3):95-98. |
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| Authors: | QIAN Yu-chun CHEN Shuan-fa CONG Pei-liang LI Zu-zhong |
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| Affiliation: | 1.School of Highway,Chang’an University,Xi’an710064,China 2.School of Materials Science and Engineering,Chang’an University,Xi’an 710061,China.) |
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| Abstract: | The curing kinetics of bisphenol A based epoxy resins(E-51) and curing agent used in the TAF epoxy asphalt(J-2) was studied by non-isothermal differential scanning calorimetry(DSC) technique at different heating rates.According to the DSC graphs,the kinetic parameters were obtained and the kinetic model of the curing process based on n order reaction equation was set up using Kissinger and Crane equation.The results showed that the curves calculated by the theoretical model show a good agreement with the curves obtained from the experimental data.Under the 5~25 K/min hating rates,the kinetic model can describe the curing process perfectly,lay a theoretical foundation for the curing mechanism of epoxy asphalt and provide the basis for the determine of the reasonable curing technology. |
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| Keywords: | epoxy resin curing mechanism kinetic model epoxy asphalt |
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