摘要
用膨胀计法研究了1,3,5-三苯甲(月替)(TFH)及其与苯醌(BQ)、四氯苯醌(CA)和1,4-萘醌(NQ)的混合物对偶氮二异丁腈引发的甲基丙烯酸甲酯的阻聚效应。结果表明,TFH与BQ或NQ按一定比例混合阻聚效果显著。但TFH与CA混合则阻聚效果反倒比TFH单独用作阻聚时差。文中研究TFH的变色反应以及聚合系统中(TF·)的存在。初步讨论了TFH及TFH-Q混合对MMA的阻聚反应机理。
The inhibiting effect of 1,3,5-triphenylformazane(TFH) on the free radical polymeriza-tion of methyl methacrylate(MMA), initiated by AIBN, has been studied by dilatometricmethod.The results indicated that when TFH was incorporated with another inhibitors suchas benzoquinone(BQ) or 1,4-naphtholquinone(NQ), the induction period of polymerizationof MMA become longer than when TFH, hydroquinone(HQ) and p-tert-butylcatechol(TBC)was used alone. The results pointed out that when the mixture of TFH and chloranil(CA)in whatever proportion used, the induction period was shorter than when TFH used alone.Prec radicals TF. have been observed in the polymerization of MMA with added TFH.
出处
《应用化学》
CAS
CSCD
北大核心
1989年第2期19-22,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
阻聚剂
醌
MMA
聚合反应
Inhibitor
Polymerization
1,3, 5-Triphenylformazane
Quinones
Methyl methacrylate
