To predict the curing behavior theoretically,the differential scanning calorimetry ( DSC) method was used to investigate the curing process of epoxy-asphalts which were prepared by sebacic acid, methyl-tetrahydrophthalic anhydride ( MeTHPA ) and tung oil anhydride ( TOA ) as curing agents.The apparent activation energy Ea , the pre-exponential factor A , the cure reaction order n , the proper gelling temperature ( T0 ) ,curing temperature( Tp ) and treating temperature( Ti ) were calculated by Kissinger, Crane equations and extrapolating T-βmethod.The results showed that:the Ea of sampleⅠ( using sebacic acid only as curing agent), sampleⅡ(using sebacic acid +MeTHPA as compounding curing agent), sampleⅢ(using sebacic acid +MeTHPA +TOA as compounding curing agent) were 81.29 kJ/mol, 67.61 kJ/mol and 70.41 kJ/mol, the A were 32.87 ×104 , 1.30 ×104 and 3.57 ×104 , the n were 0.91, 1.00 and 0.89, the T0 were 392.09,382.46 and 399.83 K, the Tp were 458.60 K,455.36 K and 441.55 K,the Ti were 524.38 K, 520.60 K and 519.26 K.Comparing the three samples, it could be found that the sample Ⅲ was more suitable for practical engineering applications.%采用示差扫描量热法( DSC)研究利用癸二酸、甲基四氢苯( MeTHPA)和桐油酸酐( TOA)用为固化剂时所制备的环氧沥青的固化过程,得到固化反应的表观活化能Ea、频率因子A和反应级数n等动力学参数,并计算出该环氧沥青材料的起始固化温度、固化温度和后固化温度等固化参数.研究发现:试样Ⅰ(只采用癸二酸作为固化剂)、Ⅱ(采用癸二酸和甲基四氢苯复配作为固化剂)、Ⅲ(采用癸二酸、甲基四氢苯和桐油酸酐复配作为固化剂)的反应活化能Ea 分别为81.29 kJ/mol、67.61 kJ/mol和70.41 kJ/mol,频率因子A分别为32.87×104、1.30×104和3.57×104,反应级数n分别为0.91、1.00和0.89;3种试样的开始固化温度T0分别为392.09 K、382.46 K和399.83 K,恒温固化温度Tp分别为458.60 K、455.36 K和441.55 K,固化完成温度Ti分别为524.38 K、520.60 K和519.26 K,综合对比而言,试样Ⅲ更适合实际的工程应用.
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