Abstract:

The kinetics of vinyl chloride suspension polymerization with a novel peroxide, 3hydroxy1,1dimethylbutyl peroxyneodecanoate (Lup 610) as a single initiator at 51.3℃ and 56.8℃ and tbutyl peroxyneoheptanoate (Lup 701) or thexyl peroxyivalate (HPV) as a single initiator at 61.8℃, was studied The initiation efficiency at each temperature was obtained by selecting the kinetic model value that best fitted the experimental valueThe initiation efficiency of initiator Lup 610 was 0.80 at 51.3℃ and 0.75 at 56.8℃, that of initiator Lup 701 and HPV was 0.55 and 0.50 at 61.8℃, respectivelyThen the kinetics of polymerization with these novel peroxides mixed with di-2-ethylhexyl peroxydicarbonate or t-butyl peroxyneodecanoate as initiators was also investigatedIt was found that the experimental data were in good agreement with the model value.

摘要：

研究了新型过氧化物引发剂过氧化新癸酸1,1二甲基-3-羟基丁基酯(Lup 610)在51.3与56.8℃以及过氧化新庚酸叔丁酯(Lup 701)和过氧化新戊酸叔己酯(HPV)在61.8℃单一引发剂引发氯乙烯悬浮聚合动力学，并采用模型计算结果绘制转化率时间曲线，取与实验数据符合最好的f值作为引发剂的引发效率，求得引发剂Lup 610在51.3与56.8℃的引发效率分别为0.80与0.75，引发剂Lup 701和HPV在61.8℃下的引发效率分别为0.55和0.50。研究了上述引发剂与过氧化二碳酸二(2-乙基己酯)、过氧化新癸酸叔丁酯在各温度下复合引发剂引发氯乙烯悬浮聚合的动力学，与模型值相比较，发现两者能很好吻合。