Research progress on preparation methods,expansion mechanisms and applications of expandable graphite
Expanded graphite has been widely used as a sealing material,adsorption material,insulation material,flame retardant material,and packaging material,et al.because of its properties oflight weight,high flexibility,high specific surface area,high porosity,and strong adsorption capacity.As a precursor of expanded graphite,expandable graphite has become one of the key research topics in the field of graphitedue to its low-cost,green preparation method.This article provides an overview of the structure and properties,expansion reaction principle,preparation methods and main application fields of expandable graphite.It also provides a detailed introduction to the preparation methods of expandable graphite,including chemical oxidation,electrochemical methods,ultrasonic oxidation,gas-phase diffusion and molten salt methods.So it can provide the references for the preparation,application,and development of downstream products of expandable graphite.
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