▎ 摘　　要

NOVELTY - Preparing high-strength multifunctional graphene elastomer foam, comprises (i) preparing 0.5-3 wt.% graphene oxide dispersion, fully dispersing, and centrifuging the graphene oxide dispersion with sheet diameter D90 of less than 10 μm by a vacuum centrifuge as elastomer foam filling liquid, (ii) reacting hexamethylene diisocyanate, polyether polyol, tensile agent and catalyst to obtain polyurethane foam intermediate, (iii) adding the polyurethane foam intermediate into crosslinking agent and the graphene oxide dispersion blowing agent of solid content 0.5-3 wt.%, mixing, transferring to mold, and vacuum drying and foaming to obtain graphene polyurethane elastomer foam, and (iv) vacuum defoaming the graphene oxide dispersion, soaking the graphene polyurethane elastomer foam in the graphene oxide dispersion, extruding the foam repeatedly to removing the bubbles, drying, refluxing in hydrazine hydrate vapor for reduction reaction, and drying again to obtain final product. USE - The method is useful in preparing high-strength multifunctional graphene elastomer foam. ADVANTAGE - The foam: has tensile strength of 80 KPa, elongation at break of 22.2%, and electrical conductivity of 0.81S m-1; can reach an absorption bandwidth of 9 GHz (9.018GHz) with shielding ability, and reach maximum absorption value of microwave absorption at 34.8 dB; absorbs more than 70 times its own weight of organic solvents; and reaches absorption rate of 130 times for methylene chloride with a higher density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for high-strength multifunctional graphene elastomer foam is prepared by above method.