Blends of an epoxy thermosetting polymer with aromatic liquid-crystalline polyesters

被引：6
|
作者：
Jasinski, W
Carlier, V
Legras, R
Mormann, W
机构：
[1] Univ Siegen, Fachbereich 8, Lab Makromol Chem, D-57068 Siegen, Germany
[2] Catholic Univ Louvain, Unite Chim & Phys Hauts Polymeres, B-1348 Louvain, Belgium
来源：
MACROMOLECULAR SYMPOSIA | 2003年 / 198卷
关键词：
blends; epoxy resins; liquid-crystalline polyesters (LCP); reaction-induced phase separation;
D O I：
10.1002/masy.200350827
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of aromatic liquid-crystalline polyesters with different composition have been synthesized to adjust transition temperatures and molecular weight. Miscibility of polyesters with bisphenol-A-diglycidyl ether (DEGBA), 4,4'-methylene-bis(3-chloro-2,6-dimethylaniline) (MCDEA) and the influence on transition temperatures has been studied. Miscibility of binary and ternary mixtures was found over the whole range of composition depending on the temperature. Thermoset formation by curing of LC-polyester / DEGBA / MCDEA mixtures containing different amounts of polyester resulted in reaction-induced phase separation with polyester content from 30 to 50 wt.%. Cloud point techniques, scanning electron microscopy (SEM) and dynamic mechanical thermal analysis (DMTA) have been applied.
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页码：323 / 333
页数：11
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