VARIATIONS OF THE DIELECTRIC-PROPERTIES OF EPOXY-RESINS DURING MICROWAVE CURING

被引：25

作者：

DELMOTTE, M ^{[1
]}

JULLIEN, H ^{[1
]}

OLLIVON, M ^{[1
]}

机构：

[1] CNRS,2-8 RUE HENRI DUNANT,F-94320 THIAIS,FRANCE

来源：

EUROPEAN POLYMER JOURNAL | 1991年 / 27卷 / 4-5期

关键词：

D O I：

10.1016/0014-3057(91)90190-Y

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 curing of a particular epoxy resin (diglycidylether of bisphenol-A) by three amino hardeners (4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylsulphone and 4,4'-diaminodiphenylether) is followed by dielectric measurements performed under microwave heating. The formation on heating of a molecular association, is suggested by the analysis of the dielectric variations on the basis of an additive contribution of all the known constituents in the mixture. The reversibility of this molecular association is demonstrated. Two possible interpretations are proposed and discussed. Dielectric constant variations during curing provide evidence that microwave heating is a very efficient way of energy transfer and for monitoring chemical processes, such as the cross-linking of epoxy resins.

引用

页码：371 / 376

页数：6

共 21 条

[1] MICROWAVE CURING OF EPOXY-RESINS WITH DIAMINODIPHENYLMETHANE .2. CROSSLINKING UNDER CONTINUOUS OR PULSED WAVES [J].