采用非等温差示扫描量热法（DSC）对环氧沥青及环氧树脂体系的固化反应特征进行了研究。根据不同升温速率下反应物体系固化反应的DSC特征曲线，探讨其固化反应特征，为优化环氧沥青的固化及施工工艺提供基础。试验结果表明，环氧树脂固化后，提高了沥青材料的凝胶温度、固化温度以及后处理温度，从而显著提高了环氧沥青的热稳定性特别是耐高温性能。进一步研究发现，在环氧沥青固化特征的研究中需要考虑扩散作用的影响，从而提出带部分扩散控制的环氧沥青固化反应特征。
Abstract
The curing characteristics of epoxy asphalt and the relevant epoxy resin were studied by nonisothermal differential scanning calorimetry (DSC) technique. According to the DSC graphs at different heating rates, the curing characteristics of epoxy asphalt were studied which lay a foundation for the optimization of the curing and construction technology of epoxy asphalt. The results showed that, after the curing of the epoxy resin, the gelation temperature, curing temperature and the posttreating temperature of the asphalt were all increased. So, the thermal stability, especially the high temperature resistance of the epoxy asphalt was improved rapidly. Further study found that the effect of diffusion should be considered during the curing study of the epoxy asphalt and the curing characteristic of epoxy asphalt with part of the diffusioncontrolled was put forward.
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参考文献
〓吕伟民. 热拌高强沥青混凝土的配制原理及其力学特性．同济大学学报,1995,23(5)：519523．
〓Gallagher K P, Vemilion D R. Thermosetting Asphalt: United States, 5576363 .19961119．
〓Gallagher K P,Vemilion D R.Thermosetting Asphalt Having Continuous Phase Polymer: United States,5604274 .19970218．
〓王〓晓，程〓刚，黄〓卫．环氧沥青混凝土性能研究. 东南大学学报，2001，31(6)：2124．
〓Qian Zhendong, Luo Sang, Wang Jianwei. Laboratory Evaluation of Epoxy Resin Modified Asphalt Mixtures. Journal of Southeast University:English Edition, 2007,23(1):117121．
〓Xiao Y, Van De Ven M F C, Molenaar A A A, et al. Characteristics of Twocomponent Epoxy Modified Bitumen . Materials and Structures,2010,44:611622．
〓Zhou Tianle, Gu Mingyuan, Jin Yanping, et al. Studying on the Curing Kinetics of a DGEBA/EMI2, 4/Nanosized Carborundum System with Two Curing Kinetic Methods. Polymer, 2005,46(16):61746181．
〓Alabaster D, Herrington P. Epoxy Modified Open Graded Porous Asphalt . Road Mater Pavement, 2008,9(3):481498．
〓Yu Jianying,Cong Peiliang, Wu Shaopeng, et al. Curing Behavior of Epoxy Asphalt.Journal of Wuhan University of Technology:Materials Science Edition, 2009,24(3):462465．
〖KG*2〗丛培良．环氧沥青及其混合料的制备与性能研究．武汉：武汉理工大学，2009．
〖KG*2〗曹雪娟，唐伯明．热分析动力学研究环氧沥青混凝土的固化条件分析．公路交通科技，2008，25(7)：1720．
〖KG*2〗Cao Xuejuan, Lei Yunbo, Wang Wei, et al. A Curing Model for Epoxy Asphalt Concrete and Its Implementation for Construction.International Journal of Pavement Research and Technology,2011,3(4):140146．
〖KG*2〗谢鸿峰，戴〓杰，刘承果，等．环氧沥青的热分析．高分子材料科学与工程，2009，25(11)：115117．
〖KG*2〗孙曼灵，吴良义．环氧树脂应用原理与技术．北京：机械工业出版社，2002．
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