Study On Macro Preparation Of Edge Carboxylated Graphene By Ball Milling

Graphene is considered to be the most promising material because of its excellent electrical properties,mechanical properties,thermal properties and optical properties.However,such promising materials are subject to cost,quality,and macro-preparation in industrial applications,limit.In view of the above problems,this paper proposes a new macro-preparation process for graphene,namely macro-preparation of edge carboxylated graphene by ball milling,macro-preparation of edge carboxylated graphene under ball-milling conditions in a carbon dioxide gas atmosphere,and then By heat reduction,high-quality graphene is obtained.The process has the characteristics of low cost,no pollution,and high production speed.For this process,this article has carried out a detailed exploration and discussion from the equipment selection to product impurity control and industrial application of the product,with particular emphasis on the application of graphene in the field of electrothermal film,and taking into account economic factors,let this The project can truly transform research results.1.The graphene prepared by this process has excellent conductivity,the conductivity can reach 27.7 S/cm,and the square resistance is less than 10Ω/square.2.The edge carboxylated graphene has a good layered structure with a thickness of 3.885 nm and a two-dimensional dimension of more than 20μm.3.the edge of carboxylated graphene has a larger specific surface area,specific surface area of 581 m2/g,The oxygen content exceeds 20%.4.the edge of carboxylated graphene has a good dispersion,can be dissolved in water,NMP,DME and other solvents,has a good application prospects.