PRODUCTION PROCESS FOR RICE-WHEAT STRAW GRAPHENE AS FRICTION MATERIAL

摘要

A production process for rice-wheat straw graphene as a friction material, comprising the steps of: firing rice-wheat straw into char powder without oxygen, activating the char powder, graphitizing same in an environment of 2400 to 2600 degrees Celsius, and subjecting same to activation and enhancement treatment to produce artificial graphite; adding concentrated sulfuric acid to a reaction vessel, cooling the temperature to -5 to 0 degree Celsius, adding the artificial graphite, performing stirring and mixing, and adding sodium nitrate for reaction in an environment of 3 degrees Celsius for 50 minutes; adding potassium permanganate at 98 to 100 degrees Celsius for reaction for 1 hour, and then controlling the temperature to decrease to 35 degrees Celsius for reaction for 1 hour; and performing centrifugal washing to remove concentrated sulfuric acid, and then performing drying in an environment of 30 to 45 degrees Celsius so as to obtain rice-wheat straw graphene. The production process has the advantage of reducing the production cost of friction materials.