▎ 摘　　要

NOVELTY - Preparing graphene/elastomer nano composite material by solution blending method, comprises e.g. subjecting graphite intercalation compound to thermal expansion to obtain multi layer graphite nano microchip, immersing the multi layer graphite nano microchip in tetrahydrofuran, and subjecting ultrasonic treatment to obtain tetrahydrofuran dispersion less-layered graphene microchip, immersing elastomer in tetrahydrofuran solvent, then heating, and dissolving to obtain homogeneous elastomer solution, and mixing. USE - The method is useful for preparing graphene/elastomer nano composite material (claimed). ADVANTAGE - The method: has low cost, is convenient and simple compared with the existing melt blending method, can achieve better dispersion effect of graphene in elastomer material; and can improve electric conductivity and mechanical property of the elastomer material. DETAILED DESCRIPTION - Preparing graphene/elastomer nano composite material by solution blending method, comprises (i) subjecting graphite intercalation compound to thermal expansion at 600-900 degrees C for 0.5-1.5 minutes to obtain multi layer graphite nano microchip, (ii) immersing the multi layer graphite nano microchip in tetrahydrofuran, and subjecting ultrasonic treatment for 1-3 hours to obtain tetrahydrofuran dispersion less-layered graphene microchip, where during ultrasonic treatment, ensure the tetrahydrofuran temperature is greater than or equal to 30 degrees C, (iii) immersing elastomer in tetrahydrofuran solvent, heating to 30-90 degrees C, dissolving the elastomer completely under stirring condition to obtain homogeneous elastomer solution, (iv) mixing uniformly the tetrahydrofuran dispersion less-layered graphene microchip elastomer solution and homogeneous elastomer solution under stirring condition to obtain mixed solution, where the molar ratio between less-layered graphene microchip and elastomer is 0.1-40:1, then subjecting the mixed solution to ultrasonic treatment for 0.5-3 hours to obtain mixed solution; where during the ultrasonic treatment, the temperature of tetrahydrofuran is less than or equal to 30 degrees C, and (v) heating the mixed solution to 50-70 degrees C, volatilizing the solvent, where the solvent is volatilizing to 50% of total weight percentage of the solvent, adding ethanol and precipitating, then washing and drying.