▎ 摘　　要

NOVELTY - Graphene hydrogel comprises 10-50 pts. wt. vinyl-terminated polydimethylsiloxane, 10-50 pts. wt. vinyl-terminated polymethylvinylsiloxane, 1-10 pts. wt. methyl end side hydrogen-containing polysiloxane, 1-10 pts. wt. polysiloxane containing hydrogen, 0.1-5 pts. wt. silicon-hydrogen chain extender, 10-50 pts. wt. graphene, 1-10 pts. wt. carbon nanotubes, 0.1-2 pts. wt. tackifier, 0.1-2 pts. wt. carbon interface treating agent, 1-5 pts. wt. inert diluent, 0.01-1 pts. wt. alkynol inhibitor, and 0.01-1 pts. wt. platinum catalyst. USE - Used as graphene hydrogel. ADVANTAGE - The graphene hydrogel: uses high graphene-based electromagnetic and heat shielding silicone materials, which has high excellent electronic and thermal physical properties; achieves the performance of electromagnetic and thermal shielding at the same time; uses above components, which act synergistically; and achieves excellent mechanical strength and reliable stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene hydrogel comprising (i) taking silicon-hydrogen chain extender, tackifier, carbon interface treating agent, inert diluent, alkynol inhibitors and platinum catalysts, dividing under vacuum for many times, dispersing in vinyl-terminated polydimethylsiloxane, vinyl-terminated polymethylvinylsiloxane, mixing methyl-terminated hydrogen-containing polysiloxane and the hydrogen-terminated polysiloxane to obtain matrix, (ii) dispersing graphene and carbon nanotubes in the matrix in batches under circulating water cooling, and (iii) defoaming.