Lap Shear Strength and Healing Capability of Self-Healing Adhesive Containing Epoxy/Mercaptan Microcapsules

作     者：Ghazali, Habibah hgha9593@uni.sydney.edu.au Lin Ye Ming-Qiu Zhang 

作者机构：Centre for Advanced Materials Technology (CAMT) School of Aerospace Mechanical and Mechatronic Engineering The University of Sydney NSW 2006 Australia Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education Zhongshan University Guangzhou 510275 P. R. China 

出 版 物：《AIP Conference Proceedings》 (美国物理学会会议录)

年 卷 期：2016年第1713卷第1期

页      面：1-5页

学科分类：07[理学] 0702[理学-物理学] 

主　　题：Epoxy Lap Shear Strength Polymeric Adhesive Self-Healing 

摘      要：The aim of this work is to develop a self-healing polymeric adhesive formulation with epoxy/mercaptan microcapsules. Epoxy/mercaptan microcapsules were dispersed into a commercialize two-part epoxy adhesive for developing self-healing epoxy adhesive. The influence of different content of microcapsules on the shear strength and healing capability of epoxy adhesive were investigated using single-lap-joints with average thickness of adhesive layer of about 180 µm. This self-healing adhesive was used in bonding of 5000 series aluminum alloys adherents after mechanical and alkaline cleaning surface treatment. The adhesion strength was measured and presented as function of microcapsules loading. The results indicated that the virgin lap shear strength was increased by about 26% with addition of 3 wt% of self-healing microcapsules. 12% to 28% recovery of the shear strength is achieved after self-healing depending on the microcapsules content. Scanning electron microscopy was used to study fracture surface of the joints. The self-healing adhesives exhibit recovery of both cohesion and adhesion properties with room temperature healing. [ABSTRACT FROM AUTHOR]