Influence of Chemical Structure of Hardener on Mechanical and Adhesive Properties of Epoxy Polymers

被引：19

作者：

Garcia, Filiberto Gonzalez ^{[1
,2
]}

Leyva, Maria Elena ^{[1
]}

Oliveira, Marcia Gomes ^{[3
]}

Alencar De Queiroz, Alvaro Antonio ^{[1
]}

SimoEs, Alexandre Zirpoli ^{[2
]}

机构：

[1] Univ Fed Itajuba UNIFEI, Inst Ciencias Exatas, Dept Quim & Fis, Lab Biomat, BR-37500903 Itajuba, MG, Brazil

[2] UNIFEI Campus Itabira, BR-35900373 Itabira, MG, Brazil

[3] Inst Nacl Tecnol, Div Processamento & Caracterizacao Mat, BR-20081312 Rio De Janeiro, Brazil

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 117卷 / 04期

关键词：

epoxy adhesive; adhesive joint; epoxy/amine networks; CURE;

D O I：

10.1002/app.31892

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 mechanical and adhesive properties of epoxy formulations based on diglycidyl ether of bisphenol A cured with various aliphatic amines were evaluated. in the glass state. Impact and uniaxial compression tests were used to determine the impact energy, elastic modulus and yield stress, respectively. The adhesion tests were carried out in steel-steel joints using single-lap shear, T-peel, and impact adhesive joints geometry. The better mechanical and adhesive behavior of the networks is obtained when exists high flexibility of chain between crosslink and/or high elastic modulus. The 1-(2-aminoethyl)piperazine epoxy network presents the best adhesive properties, high flexibility, and the largest impact energy. However, it possesses low elastic modulus and yield stress. Also, exhibits increases in peel strength and impact energy while reductions in lap shear strength. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 2213-2219, 2010

引用

页码：2213 / 2219

页数：7

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