Mechanical and electrical performances of different silicone rubber content in polyurethane elastomer/silicone rubber/graphene nano-platelets conductive material

PROCEEDINGS OF 8TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS ENGINEERING & TECHNOLOGY (ICAMET 2020) Pub Date : 2021-07-21 DOI:10.1063/5.0053714

C. W. Heng, P. Teh, N. Rahim, C. Yeoh

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Abstract

Immiscible polyurethane elastomer (PUE)/silicone rubber/graphene nano-platelets blend composites filled with different PUE/silicone rubber blend ratio were synthesised by using solution casting technique. In this work, two different types of silicone rubber: liquid silicone rubber (LSR) and powdered silicone rubber (PSR) were used as secondary matrix based on double percolation concept to construct an immiscible blend that has a balance electrical conductivity and mechanical properties. The electrical conductivity has increased gradually, but the mechanical properties of the composites shows a remarkable decline when silicone rubber loading increases up to 20 vol% for both blend systems. The well balance of electrical conductivity and performance is achieved at 15 vol.% of silicone rubber loading. Overall, PUE/PSR/GnPs at 15 vol. % of silicone rubber content has higher electrical conductivity and mechanical strength as compared to PUE/LSR/GnPs blend system.

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不同硅橡胶含量的聚氨酯弹性体/硅橡胶/石墨烯纳米片导电材料的机械和电气性能

采用溶液浇铸法制备了不同PUE/硅橡胶共混比例的非混相聚氨酯弹性体/硅橡胶/石墨烯纳米片状共混复合材料。本研究以液态硅橡胶(LSR)和粉末状硅橡胶(PSR)两种不同类型的硅橡胶作为二次基质，基于双渗透概念构建了导电性能和力学性能平衡的非混相共混体系。两种共混体系中，当硅橡胶掺量增加到20 vol%时，复合材料的导电性逐渐提高，但力学性能明显下降。导电性和性能的良好平衡是在15体积%的硅橡胶负载下实现的。总体而言，与PUE/LSR/GnPs共混体系相比，硅橡胶含量为15 vol. %的PUE/PSR/GnPs具有更高的导电性和机械强度。

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PROCEEDINGS OF 8TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS ENGINEERING & TECHNOLOGY (ICAMET 2020)

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