采用膨胀计法,在30℃的恒温条件下,研究了由N-正丁基硫代吖啶酮(NBTA)、二甲基二苯基碘钅翁盐(DMDPI)、硫代水杨酸(TS)和甲基丙烯酸甲酯(MMA)组成的光敏聚合体系在氙灯照射下的聚合反应动力学;研究了温度对光聚合反应速率的影响。结果表明,30℃下,该体系的光聚合速率与各组分的关系可用下述动力学方程式表示:Rp=K[NBTA]^0.78[DMDPI]^0.56[TS]^0.6[MMA]^0.94;随着温度的增加,光聚合速率增大。

Kinetic study of photopolymerization of methyl methacrylate (MMA) was carried out at 30 ℃, by using dilatomer under Xeon lamp. Meanwhile , the effect of temperatures was also reseached . The initiating system comprises N-( n-butyl) thioacridone (NBTA) , dimethyldiphenyl-iodonium salt (DMDPI) and thiosalilylic
acid (TS) . The conclusion shows that the kinetic equation of polymerization is RP = K[NBTA]^{0. 78} [DMDPI]^{0. 56}[TS]^{0. 6} [MMA]^{0. 94} , and the reaction of photopolymerization speeds up with the increasing of temperature.