ORGANOTRANSITION-METAL COMPLEXES AS ADDITIVES FOR EPOXY-RESINS .1. THEIR EFFECTS ON TOUGHNESS AND MORPHOLOGY OF EPOXY-RESINS

被引：19

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 / 02期

关键词：

COMPLEXES; ADDITIVES; CHROMIUM ACETYLACETONATE; COBALT ACETYLACETONATE; EPOXY RESINS; TOUGHNESS; MORPHOLOGY;

D O I：

10.1016/0032-3861(93)90078-O

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 toughening effects of chromium and cobalt acetylacetonate (Cr(acac), and Co(acac)3) additives on diglycidyl ether of bisphenol A/diethylenetriamine (DGEBA/DETA) and tetraglycidyldiaminodiphenylmethane/diaminodiphenylsulphone (TGDDM/DDS) epoxy resins were investigated and correlated with the changes of their fracture surface morphology. According to fracture tests of their compact tension specimens (CTS), Cr(acac)3 had much higher toughening effects than Co(acac)3. Scanning and transmission electron microscope investigation of their fracture surfaces implied that the epoxy resins incorporated with Cr (acac) 3 had more cohesive structure than those incorporated with Co (acac) 3 or neat resins. The results have been further supported by gel permeation chromatography and wide-angle X-ray scattering analyses, which revealed that Cr (acac) 3 could interact with hydroxy groups in the epoxy networks and reinforced the structure.

引用

页码：277 / 288

页数：12

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