ORGANOTRANSITION-METAL COMPLEXES AS ADDITIVES FOR EPOXY-RESINS .2. INTERACTION WITH EPOXY-RESINS

被引：10

作者：

LIN, KF

SHU, WY

WEY, TL

机构：

[1] Institute of Materials Science and Engineering, National Taiwan University, Taipei

来源：

POLYMER | 1993年 / 34卷 / 10期

关键词：

CHROME ACETYLACETONATE; EPOXY RESINS; ADDITIVES; INTERACTIONS; TOUGHNESS;

D O I：

10.1016/0032-3861(93)90745-V

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In our previous study, chromium acetylacetonate (Cr(acac)3) was found to have a greater toughening effect on epoxy resin than Co(acac)3. G.p.c. and n.m.r. results indicated that Cr(acac), has a tendency to attach to the hydroxy groups of diglycidyl ether of bisphenol A (DGEBA) multimers during mixing. This is due to the fact that the (acac)- ligands of Cr(acac)3 are able to attract protons from hydroxy groups. As the DGEBA epoxy resin incorporating Cr(acac)3 was cured with amine curing agents, each Cr(acac)3 molecule was able to interact with more than one hydroxy group. This reinforced the cured epoxy network unless the amine curing agents exceeded the stoichiometric quantity of epoxy groups.

引用

页码：2162 / 2168

页数：7

共 17 条

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