▎ 摘　　要

NOVELTY - The preparation method of self-cleaning multifunctional graphene sponge involves (i) weighing raw materials comprising graphene, photocatalyst, flame retardant, polyurethane, binder, and foaming aid, cleaning a foam tank with a detergent, rinsing the foam tank with pure water, drying foam tank, connecting the foam cylinder with an ultrasonic vibration dispersion device, (ii) slowly mixing graphene, photocatalyst, flame retardant, polyurethane, binder, and foaming aid and uniformly adding into a foam cylinder to obtain a mixture. USE - Preparation of self-cleaning multifunctional graphene sponge used in underwear, shoe, Maglev, high-speed rail and high-end car seats, senior sofa, mattresses and other household products. ADVANTAGE - The energy-saving method enables the preparation of self-cleaning multifunctional graphene sponge by simple process in high yield with high efficiency, strength, and softness, excellent breathable property, antistatic property, far-infrared performance, antibacterial property, instant deodorant performance, negative ion performance, and conductive and thermal properties. DETAILED DESCRIPTION - The preparation method of self-cleaning multifunctional graphene sponge involves (i) weighing raw materials comprising graphene, photocatalyst, flame retardant, polyurethane, binder, and foaming aid, cleaning a foam tank with a detergent, rinsing the foam tank with pure water, drying foam tank, connecting the foam cylinder with an ultrasonic vibration dispersion device, (ii) slowly mixing graphene, photocatalyst, flame retardant, polyurethane, binder, and foaming aid and uniformly adding into a foam cylinder to obtain a mixture, stirring the mixture, dispersing the mixture with an ultrasonic vibration dispersing device for 30-60 minutes, uniformly dispersing graphene, photocatalyst, flame retardant, binder, and foaming aid in a polyurethane carrier to obtain a blend solution, (iii) placing the foam cylinder in a sealed bath, and foaming the blend solution at 30-60 degrees C for 20-30 hours. The ratio of graphene and sponge is 1:100-1:10.