▎ 摘　　要

NOVELTY - Alcohol is added to terminal isocyanate group-containing polyurethane, and capping reaction is carried out to obtain terminated polyurethane polymer. Acetic acid, hydrochloric acid, phosphoric acid, sulfuric acid or other inorganic acids is added to terminated polyurethane polymer, reacted at 30-90 degrees C for 10-50 minutes, and diluted using a solvent to obtain aqueous graphene-modified polyurethane film former. USE - Manufacture of aqueous graphene-modified polyurethane film former used as glass fiber film forming agent, fabric sizing agent, leather finishing agent, carbon fiber sizing agent and adhesive or coating (all claimed). ADVANTAGE - The method efficiently and economically provides aqueous graphene-modified polyurethane film former having excellent antistatic property and electromagnetic shielding property by simple method. The aqueous graphene-modified polyurethane film former is capable of reducing the surface resistivity. DETAILED DESCRIPTION - Under inert gas atmosphere, graphene, graphene oxide or graphene amide is dispersed in an organic solvent, stirred and 0.1-50 %mass diisocyanate component is added, reacted at 20-100 degrees C for 0.1-20 hours to obtain dispersion of functionalized graphene. Polyether glycol is added to the obtained dispersion, such that the molar ratio of polyether glycol and diisocyanate component is 1.1-1.9:2. The resultant mixture is reacted at 25-150 degrees C, and organic solvent is added and reacted to obtain terminal isocyanate group-containing graphene-modified polyurethane prepolymer. 5-20% Alkanolamine is added to the resultant mixture, and chain extension of prepolymer is carried out at 40-150 degrees C. An organic solvent is added to the resultant mixture to obtain terminal isocyanate group-containing polyurethane. Alcohol is added to the resultant product, and capping reaction is carried out to obtain terminated polyurethane polymer. Acetic acid, hydrochloric acid, phosphoric acid, sulfuric acid or other inorganic acids is added to terminated polyurethane polymer, reacted at 30-90 degrees C for 10-50 minutes, and diluted using a solvent to obtain aqueous graphene-modified polyurethane film former.