摘要
合成了一种液态聚氨酯乙烯基醚预聚物 (PUE)并对其进行了表征 .研究发现二苯基碘六氟磷酸盐(PI810 )能够引发PUE和三缩乙二醇二乙烯基醚 (DVE 3)进行阳离子热聚合 ,热聚合温度远低于PI810的纯态热分解温度 ,且聚合转化率较高 .热聚合的机理初步认为是电子转移机理 .研究了乙烯基醚化合物、环氧树脂、二苯基碘六氟磷酸盐混合体系的热聚合 .
A liquid urethane prepolymer encapped with vinyl ether groups ( PUE was synthesized and characterized. PUE and triethylene glycol divinyl ether (DVE-3) can undergo rapid cationic thermal polymerization in the presence of diphenyliodonium hexafluorophosphate (PI810) at different temperatures. The polymerization conversion of vinyl ether is pretty high. Thermal polymerization temperature for these systems is much lower than the decomposition temperature of neat PI810. The initiation mechanism is presumably based on electron transfer from electron-rich vinyl ether to electron-deficient diphenyliodonium salt. The influence of vinyl ether on the thermal polymerization of epoxy resin/diphenyliodonium salt was also investigated.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第1期18-23,共6页
Acta Polymerica Sinica
基金
广东省科委重大科技专项 (粤财企 [2 0 0 1 ]3 67号 )资助项目
