Effect of Emulsion Temperature on Properties of Conductive Epoxy Porous Prepared by Single Emulsion Technique

[摘要] Currently, conductive porous is used in composite to reduce the conductive filler loading and improve the conductive property. In this study, conductive epoxy porous (CEP) had been fabricated by single emulsion technique from the mixture of epoxy, polyamide hardener, carbon black filler and sodium bicarbonate. Epoxy mixture was dropped into a heated corn oil at different temperatures (140, 160 and 180 °C) under stirring of 1000 rpm. Because of the immiscibility of epoxy and corn oil, epoxy droplets were formed. Initial epoxy droplets were broken into smaller droplets due to applied stirring shear. In addition, the decomposed gas (carbonic gas and water vapour) from sodium bicarbonate also caused an internal expanding pressure to further break the epoxy droplet into many fine droplets. Curing reaction of epoxy and polyamide occur simultaneously formed CEP. It was found that all the CEPs exhibited higher conductivity compared to control epoxy and epoxy composite filled equivalent content of carbon black. Furthermore, emulsion temperature of 160 °C produced the smallest porous CEP, which performed the highest electrical property.

[发布机构] School of Materials Engineering, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi II, Perlis, Arau; 02600, Malaysia^1

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Carbon black fillers;Conductive epoxy;Conductive fillers;Conductive properties;Curing reactions;Expanding pressure;Polyamide hardener;Single emulsions