▎ 摘　　要

NOVELTY - Method of producing nanocomposite composition comprising silicone elastomer matrix and functionalized graphene sheets having surface area of 300-2630 m2/g involves dispersing functional graphene sheets (FGS) in polar solvent to form FGS suspension, combining FGS suspension with vinyl terminated polysiloxane, removing polar solvent, combining resulting mixture with crosslinker and hydrosilylation catalyst, and curing resulting mixture to provide nanocomposite, in which functional graphene sheets have loading of greater than or equal to 0.05 wt.% based on total nanocomposite weight. USE - Method of producing nanocomposite composition for product e.g. coatings, adhesives, sealants, flexible electrodes, actuators, pressure sensors, printed circuits, and electromagnetic interference shielding materials (all claimed). ADVANTAGE - The method produces nanocomposite which has higher modulus, strength, failure strain, and electrical conductivity and lower gas permeability than unfilled silicone elastomer. DETAILED DESCRIPTION - Method of producing nanocomposite composition comprising silicone elastomer matrix and functionalized graphene sheets having surface area of 300-2630 m2/g involves dispersing functional graphene sheets (FGS) in polar solvent to form FGS suspension, combining FGS suspension with vinyl terminated polysiloxane, removing polar solvent, combining resulting mixture with crosslinker and hydrosilylation catalyst, and curing resulting mixture to provide nanocomposite, in which functional graphene sheets have loading of greater than or equal to 0.05 wt.% based on total nanocomposite weight, hydrosilylation catalyst is present at concentration of 367-5600 ppm, nanocomposite has silicon hydride to vinyl molar ratio of 1.5-2.1, and functional graphene sheets are present within nanocomposite in continuous three-dimensional connected network in a manner in which individual functional graphene sheets have nanometer scale separation at contact point between individual functional graphene sheets. An INDEPENDENT CLAIM is included for product made of nanocomposite.