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

被引：62

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.

引用

页码：295 / 304

页数：10

共 25 条

[1]

BURNS R, 1982, POLYESTER MOLDING CO

[2] RE-EXAMINATION OF THE CROSSLINKING PROCESS IN STYRENE UNSATURATED POLYESTER SYSTEMS [J].