CURING OF UNSATURATED POLYESTER RESINS - EFFECTS OF TEMPERATURE AND INITIATOR .1. LOW-TEMPERATURE REACTIONS

被引：61
作者：
HUANG, YJ
LEU, JS
机构：
[1] Department of Chemical Engineering, National Taiwan Institute of Technology, Taipei
来源：
POLYMER | 1993年 / 34卷 / 02期
关键词：
CURING KINETICS; UNSATURATED POLYESTER RESINS DSC; IR SPECTROSCOPY; MICROGEL;
D O I：
10.1016/0032-3861(93)90080-T
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effects of temperature and initiator on the curing kinetics of unsaturated polyester resins at 30-50-degrees-C were studied by d.s.c. and i.r. spectroscopy over the whole conversion range. It was found that at the beginning of reaction, the kinetic mechanism was dominated by near-azeotropic copolymerization, while styrene conversion became much more favourable than that of polyester C=C bonds later in the reaction. The transition point of the near-azeotropic copolymerization and the crosslink length of styrene varied with the concentrations of initiator and promoter used. The experimental results have been explained by a kinetic model relating to microgels.
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页码：295 / 304
页数：10
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