Self-healing of cracks in epoxy composites

被引：8
|
作者：
Yin, Tao [1 ,2 ]
Rong, Min Zhi [3 ]
Zhang, Ming Qiu [3 ]
机构：
[1] Zhongshan Univ, Sch Chem & Chem Engn, Key Lab Polymer Composite & Funct Mat, Minst Educ,OFCM Inst, Guangzhou 510275, Peoples R China
[2] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
[3] Zhongshan Univ, Inst Mat Sci, Guangzhou 510275, Guangdong, Peoples R China
来源：
MULTI-FUNCTIONAL MATERIALS AND STRUCTURES, PTS 1 AND 2 | 2008年 / 47-50卷
关键词：
self-healing; epoxy; cracks; polymer composites;
D O I：
10.4028/www.scientific.net/AMR.47-50.282
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To provide epoxy based composites with self-healing ability, two-component healing system consisting of urea-formaldehyde walled microcapsules containing epoxy (30 similar to 70 mu m in diameter) and CuBr2(2-MeIm)(4) (the complex of CuBr2 and 2-methylimidazole) latent hardener was synthesized. When cracks were initiated or propagated in the composites, the neighbor micro-encapsulated epoxy would be damaged and released. As the latent hardener is soluble in epoxy, it can be well dispersed in epoxy composites during composites manufacturing, and hence activate the released epoxy wherever it is. As a result, repair of the cracked sites is completed through curing of the released epoxy. The present work indicated that the plain weave glass fabric laminates using the above self-healing epoxy as the matrix have been provided with self-healing capability.
引用
收藏
页码：282 / +
页数：2
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