热固性环氧沥青的制备及应用研究

发布时间：2018-08-16 10:15

【摘要】：环氧改性沥青因良好的高温稳定性及低温抗裂性能、优异的力学性能和超强的耐疲劳、抗腐蚀性能成为铺装钢桥面、高级路面以及重载道路理想的路面材料，受到研究者的广泛关注，而环氧沥青增容剂是实现这些优异性能的关键。本论文用十一烯酸和乙二醇二缩水甘油醚开环反应合成了一种活性增容剂。利用红外光谱（FT-IR）对合成产物进行了表征，结果表明增容剂结构含有预期的环氧基和双键。通过环氧沥青材料的离析试验和DMA测试，证明了自制活性增容剂改善了环氧树脂和沥青的相容性。将环氧树脂，基质沥青，固化剂，自制活性增容剂及助剂熔融共混，，制备环氧沥青材料。通过大量实验确定了环氧沥青结合料和粘结料的配方，并研究了各组分对环氧沥青材料力学性能的影响，确定了环氧沥青结合料的最佳配方：基质沥青510份，脂肪族二元酸85份和芳香族酸酐40份组成A组分；环氧树脂100份和自制增容剂20份组成B组分。制备出的环氧沥青结合料拉伸强度为1.96MPa、断裂伸长率为226%。确定了环氧沥青粘结料的最佳配方：基质沥青310份，脂肪族二元酸85份和芳香族酸酐40份组成A组分；环氧树脂100份和自制增容剂15份组成B组分。制备出的环氧沥青粘结料的拉伸强度为5.9MPa、断裂伸长率为158%。利用热固性测试、吸水率测试、热失重分析仪（TGA)、动态机械分析仪（DMA)对环氧沥青材料进行了性能测试和表征。结果表明，环氧树脂使得沥青由原来的热塑性弹性体变成了不溶不熔的热固性弹性体；环氧沥青材料的吸水率低于0.3%，满足国内和美国环氧沥青吸水率的指标要求。
[Abstract]:Epoxy modified asphalt is an ideal pavement material for paving steel bridge deck, high grade pavement and heavy load road due to its good high temperature stability and low temperature crack resistance, excellent mechanical properties and super strong fatigue resistance. The epoxy asphalt compatibilizer is the key to realize these excellent properties. In this paper, an active compatibilizer was synthesized by ring-opening reaction of undecenoic acid and ethylene glycol diglycidyl ether. The synthesized products were characterized by infrared spectroscopy (FT-IR). The results show that the structure of compatibilizer contains the expected epoxy group and double bond. Through the segregation test and DMA test of epoxy asphalt, it was proved that the compatibility of epoxy resin and asphalt was improved by self-made active compatibilizer. Epoxy asphalt was prepared by melt blending epoxy resin, matrix asphalt, curing agent, self-made active compatibilizer and auxiliary agent. The formula of epoxy asphalt binder and binder was determined through a large number of experiments, and the effect of each component on the mechanical properties of epoxy asphalt binder was studied. The optimum formulation of epoxy asphalt binder was determined as follows: base asphalt 510 phr. The composition of component A is 85 phr of aliphatic dibasic acid and 40 phr of aromatic anhydride, 100 phr of epoxy resin and 20 phr of self-made compatibilizer. The tensile strength of epoxy asphalt binder is 1.96 MPA and elongation at break is 226 MPA. The optimum formulation of epoxy asphalt binder was determined as follows: base asphalt 310 phr, aliphatic acid 85 phr and aromatic anhydride 40 phr, epoxy resin 100 phr and self-made compatibilizer 15 phr. The tensile strength of epoxy asphalt binder is 5.9 MPA and elongation at break is 158 MPA. The properties of epoxy asphalt were tested and characterized by thermosetting test, water absorption test and thermogravimetric analyzer (TGA),) dynamic mechanical analyzer (DMA). The results show that the epoxy resin can change the asphalt from the original thermoplastic elastomer to the insoluble thermosetting elastomer, and the water absorption of epoxy asphalt is lower than 0.3, which meets the requirements of the domestic and American epoxy asphalt water absorption.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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