FUP/MMA/T-60改性粉煤灰固化反应动力学研究  

Curing Kinetics of FUP/MMA /T-60 Modified by Coal Fly Ash Systems with DSC

作　　者：牛建兵[1] 王世兵[1] 

机构地区：[1]黄淮学院化学化工系,河南驻马店463000

出　　处：《信阳师范学院学报（自然科学版）》2013年第4期551-554,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：河南省科技攻关项目(122102210528)

摘　　要：用差示扫描量热法(DSC)研究了自制柔性不饱和聚酯/甲基丙烯酸甲酯树脂(FUP/MMA)和柔性不饱和聚酯/甲基丙烯酸甲酯/T-60改性粉煤灰(FUP/MMA/CFA)复合体系的固化过程.利用Kissinger法、Ozawa法求出FUP/MMA和FUP/MMA/CFA两体系固化反应的表观活化能分别为81.578 kJ·mol-1和77.231 kJ·mol-1;用ASTM E698-79标准方法求得两体系固化反应的指前因子lnA分别为20.40 s-1和19.15 s-1;结合Crane方程得到两体系的反应级数n分别为0.9377和0.9359;最终确定了固化反应的动力学方程.用T-β外推法确定了凝胶温度、固化温度和后固化温度等固化工艺温度.The curing kinetics of flexible unsaturated polyester/methyl methacrylate resin （FUP/MMA） and flexi- ble unsaturated polyester resin/coal fly ash （FUP/MMA/CFA） system was studied with non-isothermal DSC. The ap- parent activation energy （Ea） , pre-exponential factor （A） and reaction order （n） were obtained, where E = 81. 578 kJ ~ tool-1, lnA = 20.40 s-1 and n = 0.937 7 for FUP/MMA system and Ea = 77.231 kJ · mol^-1, lnA = 19.15 s-1 and n = 0. 935 9 for FUP/MMA/CFA system with Kissinger method, Ozawa method, ASTM E698-79 method and Crane equation. Based on these parameters, kinetic equations for the curing of FUP/MMA and FUP/MMA/CFA sys- tems were established. Gelling temperature, curing temperature and treating temperature for each system were deter- mined by extrapolating T-β.

关 键 词：柔性不饱和聚酯树脂 甲基丙烯酸甲酯 粉煤灰 固化 动力学 

分 类 号：TQ316.2[化学工程—高聚物工业]