Effect Of Hybridization On The Functional Properties Of AgMF–MWCNT-Filled Electrically Conductive Adhesive

Sheikh Md Fadzullah, Siti Hajar and Masripan, Nor Azmmi and Omar, Ghazali and Mansor, Muhd Ridzuan and Salim, Mohd Azli and Adnan, Zainalfirdaus and Mustafa, Zaleha (2020) Effect Of Hybridization On The Functional Properties Of AgMF–MWCNT-Filled Electrically Conductive Adhesive. Journal of Electronic Materials, 49 (11). pp. 6572-6581. ISSN 0361-5235

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Abstract

A combination of metal and non-metal filler in an epoxy resin, called a hybrid electrically conductive adhesive (ECA), is an important development in the field of highly conductive electronic interconnect materials. Carbon nanotubes (CNTs) are well known for contributing strength and stiffness to ECA and silver (Ag) has been widely used as a conductive metal. This study presents the characterization of a hybrid silver micro-flake (AgMF) with multiwalled carbon nanotubes (MWCNT) in an epoxy matrix ECA, in terms of electrical and mechanical properties. The weight percentage of AgMF used was varied, from 1 wt.% to 10 wt.%, whereas the weight percentage of MWCNT filler loading was maintained at 5 wt.%. The properties of the hybrid ECA were characterized using a four-point probe and a universal testing machine for lap shear tests. It was found that the filler hybridization lowered the performance of the ECA in terms of both electrical and mechanical properties, as compared with non-hybrid MWCNT-filled ECA. This may be attributed to the weak interaction between micro- and nano-filler particle sizes and agglomeration of the MWCNT in the epoxy matrix in the hybrid ECA system. The hybrid ECA electrical conductivity was successfully enhanced when a low ratio of AgMF and MWCNT was considered. In addition, failure analysis confirmed that the hybrid ECA with less AgMF filler loading exhibits improved adhesion strength, suggesting a superior epoxy-to-substrate bonding interface.

Item Type:	Article
Uncontrolled Keywords:	Electrical conductivity, Failure mode, Hybrid ECA, Lap shear, Micro-nano filler, Silver flake, AgMF–MWCNT
Divisions:	Faculty of Mechanical Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	04 Mar 2021 15:28
Last Modified:	04 Mar 2021 15:28
URI:	http://eprints.utem.edu.my/id/eprint/24866
Statistic Details:	View Download Statistic

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