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Self-healing Isotropical Conductive Adhesives
From:互联网    Date:2012/7/12    Hits:7436

Self-healing Isotropical Conductive Adhesives
Filled with Ag Nanowires
          TAO Yu1,2,WU Hai-ping1,YANG Zheng-guo2
(1.School of Materials Science and Engineering,Changzhou University,Changzhou213164,China;
2.Department of Materials Science,Fudan University,Shanghai 200433,China)

Abstract:Microsized Polystyrene(PS)-Ag nanowires/Dimethylbenzylamine(DMBA)/Polythiol core-shell capsuleswere prepared by an emulsion polymerization method.A novel kind of self-healing isotropical conductive adhesivewas developed by using these microcapsules as healing agents.When microcracks produced by outside force reachedto these healing agents,the shell layer would be destroyed automatically and the healing agents in the core would
release and react with access epoxy groups in resin substrates immediately,a new network would be formed againin bulk ICA,which has a healing effect for mechanical strength of ICA.On the other side,the dispersed Ag nanowires in microcapsules core also would release and fill in the broken area to set up a conductive network,which will help ICA to obtain a good or even better electrical properties.The relationship between the content of selfhealing microcapsules and the healing efficiency was studied and the healing mechanism was described.
Keywords:self-healing;isotropical conductive adhesive;electrical properties;mechanical properties

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