Patent ID: 11946704
Assignee: GLOBAL GRAPHENE GROUP, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC F  H  C  B  Y | IPC B  F

Claim 0:
1. An elastic heat spreader film comprising:
A) An elastomer or rubber as a binder material or a matrix material; and
B) multiple graphene sheets that are bonded by said binder material or dispersed in said matrix material, wherein said multiple graphene sheets are substantially aligned to be parallel to one another and wherein said elastomer or rubber is in an amount from 0.001% to 20% by weight based on the total heat spreader film weight and contains a material selected from natural polyisoprene, synthetic polyisoprene, polybutadiene, chloroprene rubber, polychloroprene, butyl rubber, styrene-butadiene rubber, nitrile rubber, ethylene propylene rubber, metailocene-based poly(ethylene-co-octene) elastomer, poly(ethylene-co-butene) elastomer, styrene-ethylene-butadiene-styrene elastomer, epichlorohydrin rubber, polyacrylic rubber, silicone rubber, fluorosilicone rubber, perfluoro-elastomers, polyether block amides, chlorosulfonated polyethylene, ethylene-vinyl acetate, thermoplastic elastomer, protein resilin, protein elastin, ethylene oxide-epichlorohydrin copolymer, polyurethane, urethane-urea copolymer, a sulfonated version thereof, or a combination thereof;
wherein said multiple graphene sheets contain graphene sheets selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 25% by weight of non-carbon elements wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof; and wherein said elastic heat spreader film has a fully recoverable tensile elastic strain from 2% to 100% and an in-plane thermal conductivity from 200 W/mK to 1,750 W/mK;
wherein said graphene sheets contain a chemical functional group selected from OY, NHY, O═C—OY, P═C—NR′Y, O═C—SY, O═C—Y, —CR′1-OY, N′Y or C′Y, and Y is a functional group of a protein, a peptide, an amino acid, an enzyme, an antibody, a nucleotide, an oligonucleotide, an antigen, or an enzyme substrate, enzyme inhibitor or the transition state analog of an enzyme substrate.