▎ 摘　　要

NOVELTY - An air filter cloth containing graphene material and bamboo fiber comprises high-efficiency particulate air layer, graphene-based polyurethane fiber layer and bamboo fiber layer. The high-efficiency particulate air layer is provided with graphene-based polyurethane fiber layer. Graphene-based polyurethane fiber layer is arranged below the bamboo fiber layer. The bamboo fiber layer is made of bamboo fiber suppression. The graphene-based polyurethane fiber layer is graphene/nanocrystalline cellulose/polyaniline/thermoplastic polyurethane composite fiber which are woven into dimensions. USE - Air filter cloth containing graphene material and bamboo fiber (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of air filter cloth, which involves pressing bamboo fiber layer, preparing graphene-based polyurethane fiber layer, preparing graphene oxide by modified Hummers process, diluting prepared graphene oxide aqueous dispersion and nanocrystalline cellulose aqueous dispersions to 1.2 mg / mg and 2.9 mg / ml respectively, ultrasonically dispersing for 2 hours, taking 60 ml mixture into flask, adding 0.53 g polyaniline, ultrasonically dispersing for 3 hours, adding 0.9 ml hydrazine hydrate, magnetic stirring reaction at 95 degrees C for 5 hours, steaming to appropriate concentration, drying to obtain reduced graphene oxide, mixing N,N-dimethylformamide and acetone in volume ratio of 7:6, adding mixed solvent and polyurethane, magnetically stirring for 2 hours to obtain mass concentration of 9% polyurethane spinning solution, adding certain amount of reduced graphene oxide powder to polyurethane spinning solution, adding carbon nanotubes, titanium dioxide nano-particles and iron oxide nano-particles, ultrasonically dispersing for 3 hours, adding diisopropyl azodicarboxylate as blowing agent, ultrasonically treating for 1 hour to obtain polyurethane composite spinning solution, electrospinning of polyurethane composite spinning solution for 10 hours under voltage of 20 kV, injection rate of 1.2 ml/hour and receiving distance of 16.5 cm, collecting composite fibers and placing in a constant temperature drying chamber, drying at 70 degrees C for 2 hours to obtain graphene-based composite fiber, weaving to form graphene-based polyurethane fiber layer and orderly forming high-efficiency particulate air layer, graphene-based polyurethane fiber layer and bamboo fiber layer.