Method for preparing graphite fluoride at low temperature

Abstract

The invention discloses a method for preparing graphite fluoride at low temperature. The method comprises the following steps: using ferric fluoride as a catalyst, and performing reaction of crystalline flake graphite and bromine trifluoride at low temperature to generate a graphite intercalation compound; then, performing reaction of potassium manganese hexafluoride and antimony pentafluoride to generate fluorine; and performing reaction of the fluorine generated and the graphite intercalation compound to form the graphite fluoride with high fluorine content. Through purifying treatment by a solvent, the prepared graphite fluoride is high in purity.

Description

technical field

[0001] The invention relates to the technical field of non-metallic materials, in particular to a method for preparing fluorinated graphite at low temperature. Background technique

[0002] Graphite fluoride is one of the research hotspots of high-tech, high-performance, and high-efficiency new carbon / graphite materials in the world today. With its excellent performance and unique quality, it is a wonderful flower in the family of functional materials. Graphite fluoride has excellent lubricity, and its lubricating performance is better than that of general-purpose graphite and molybdenum disulfide. It has a smaller friction coefficient and a longer service life when it is dry or humid at high temperature (400-500 degrees). Due to the low surface energy of fluorinated graphite, it is often mixed with lubricating oil, grease or resin, and fluorinated graphite powder can also be suspended in lubricating oil or added to gasoline. Fluorinated graphite is used as ...