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Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
Published on: November 5, 2015
Revolutionizing materials: exploring graphene-nano-platelets as a conductive filler in epoxy/liquid silicone rubber
Kai Kheng Kheng Yeoh1, Pei Leng Teh1,2, Cheow Keat Yeoh1,2
1Faculty of Chemical Engineering & Technology, Kompleks Pusat Pengajian Jejawi 2, Univesiti Malaysia Perlis, Taman Muhibbah, 02600 Arau, Perlis, Malaysia.
Abstract:
This study investigates how liquid silicone rubber (LSR) content (5-20 vol.%) and graphene nano-platelets (GNPs) loading (0-1 vol.%) affect the mechanical, thermal, and electrical properties of a dual epoxy/LSR matrix prepared by mechanical mixing. At 5 vol.% LSR and 0.2 vol.% GNP, the epoxy/LSR/GNP system shows a 25% toughness improvement compared with epoxy/GNP system. The system also demonstrates enhanced thermal stability over pure epoxy at 5 vol.% LSR and 1 vol.% GNP. Electrical bulk conductivity increases with higher LSR content (0-20 vol.%). A percolation threshold is reached at a very low GNP loading (0.8 vol%), yielding a marked conductivity rise. Overall, incorporating both LSR and GNP fillers into the epoxy matrix produces a composite with superior mechanical, thermal, and electrical properties, suitable for electrically conductive adhesives.
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