Peng Zheng holds an MA degree in Rubber processing and a PhD degree in polymer science and engineering, and is currently director and professor of Agricultural Product Processing Research Institute of CATAS. He is a member of the Rubber and Rubber Products International Standardization Organization Technical Committee（ISO/TC 45）, the Society of Plastics Engineers (America) and the Congress on Advanced Materials of Australian Research Council, a Standing Councilor of the China Natural Rubber Association. His research interests include fabrication of high performance natural rubber and its standardization, tuning the interfacial characteristics of latex system via electrostatic self-assembly, construction of low-dimension nanofillers based well-organized microstructure in rubber matrix and their application in flexible electromagnetic materials.
Title：Flexible conductive rubber-graphene composites
SymposiumB19 Rubber Composites
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Abstract
Owing to their lightweight, large strain etc., flexible conductive rubber composites paly a significant important role in many applications such as flat panel displays, smart skin, organic light-emitting diodes, antistatic coatings and EMI shielding material. One of the most popular strategies developed in recent years is to incorporate graphene into an elastomer. This report summarizes our recent progress in flexible conductive graphene–filled rubber composites, with particularly focusing on the construction of well-organized graphene microstructures in cross-linked rubber matrix and theirs functional property. At the beginning, we present a recyclable, eco-environmental and effective way for the large scale production of graphene by using potassium carbonate (K2CO3) as deoxidization agent. Then, highly electrically conductive natural rubber nanocomposites with well-organized graphene network has been developed via electrostatic self-assembly integrated latex technology. Thereafter, we correlate graphene network to the rheological/electrical behavior of epoxidized natural rubber–graphene composites by using positron annihilation analysis. Finally, we introduce a novel thermo-mechanical shrinking strategy for the fabrication of stretchable graphene/polydimethylsiloxane composites with stable electrical property and long life span. Beside from flexible conductive graphene-filled rubber composites, natural rubber latex-supported gold nanoparticles for flexible SERS substrates and carbon black/binary-rubber composites with enhanced electromagnetic properties via preferential compatibility induced fillers selective localization are briefly discussed.
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