1. School of Mechanical Engineering, Chang Zhou University, Changzhou, Jiangsu 213164, China
2. National Institute of Metrology, Beijing 100029, China
3. Changzhou Institute of Inspection & Testing & Standardization and Certification, Changzhou, Jiangsu 213164, China
Abstract:Graphene, which has thermal conductivity surpasses most materials and broad application prospects, is a hot and difficult topic in current material research. Over the past decade, due to the rapid development of graphene industry, the accurate measurement of graphenes thermal conductivity is becoming more and more urgent. Definitions, preparation methods of graphene and graphenes composites and application in heat dissipation are reviewed. Traditional measurement methods of thermal conductivity, the laser flash-Raman spectroscopy method and electrothermal microbridge method for graphene are introduced. The measured values reported in some existing literatures are also compared. Prepared and measured samples which compounded of reduced graphene oxide and polypropylene by injection moulding, then find serious anisotropy form the measurement results of thermal diffusivity. Also, other problems in the measurement are pointed out and the causes of these problems are analyzed. Finally, summarize and prospect the measurement research on thermal conductivity of graphene and graphene‘s composites.
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