▎ 摘　　要

NOVELTY - Preparing graphene composite fumed silica foam fire extinguishing agent, comprises (i) mixing the fumed silica and graphene oxide solution thoroughly with rapid stirring and ultrasound, and adding not less than 5 parts of fumed silica particles to 1 pts. wt. graphene oxide to obtain a mixed solution, (ii) heating the mixed solution under heating reduction or adding a reducing agent and continuing to stir to obtain a dispersion, (iii) adding hydrolyzed protein to the dispersion, where the addition amount is 1/10 of the mass of graphene oxide, and continuously to stirring, and (iv) adding the foaming agent cetyltrimethylammonium chloride with 0.01% of graphene oxide mass and a small amount of foam stabilizer dodecanol to the dispersion and stirring to obtain the fire extinguishing agent. USE - The method is useful for preparing graphene composite fumed silica foam fire extinguishing agent (claimed). ADVANTAGE - The method increases the dispersibility in the aqueous solution, increases the stability and reduces the defoaming effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene composite fumed silica foam fire extinguishing agent obtained by the method as mentioned above.