▎ 摘　　要

NOVELTY - Production of a graphene oxide platelet-filled polyimide film involves mixing graphene oxide platelets with a polyimide precursor material and a liquid to form a slurry, where the slurry further comprises a monomer, an oligomer, a polymer, a dehydrating agent, a photosensitizer, a cure agent, an anhydride, and a diamine, forming a wet film from the slurry, and imidizing the film to substantially 90% or more completion of the crosslinking reaction, where imidization affects crosslinking of the polyimide and chemical bonding of the polyimide to said graphene oxide platelets. USE - Preparation of graphene oxide platelet-filled polyimide film (claimed) used as transparent or opaque covering film for electronic packaging and handheld electronic devices. ADVANTAGE - The method enables preparation of graphene oxide platelet-filled polyimide film with high elastic modulus, tensile strength, and dielectric strength. DETAILED DESCRIPTION - Production of a graphene oxide platelet-filled polyimide film involves mixing graphene oxide platelets with a polyimide precursor material and a liquid to form a slurry, where the slurry further comalignsprises a monomer, an oligomer, a polymer, a dehydrating agent, a photosensitizer, a cure agent, an anhydride, and a diamine, where the anhydride is chosen from benzenetetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, diethylenetriaminepentaacetic dianhydride (DTPA), ethylenediaminetetraacetic dianhydride (EDTA), mellitic acid dianhydride (MADA), naphthalenetetracarboxylic dianhydride, oxydibenzoic dianhydride, oxydiphthalic anhydride (ODPA), phthalic anhydride, and pyromellitic dianhydride (PMDA), and the diamine is chosen from 3,4'-oxydianiline, 4,4'-oxydianiline, 1,4-diaminobenzene, 1,3-diaminobenzene, 4,4'-diaminobiphenyl, 4,4'-diaminodiphenyl sulfide, 2,2'-bis(trifluoromethyl)benzidene, benzidine, 4,4-diamino diphenyl propane, 4,4'-diamino diphenyl methane, 4,4'-diamino diphenyl sulfone, 4,4'-diamino diphenyl diethyl-silane, 4,4-diamino diphenyl phenylphosphine oxide, 4,4'-diamino diphenyl N-methylamine, 4,4'-diamino diphenyl sulfide, 4,4-diamino-diphenyl phenyl phosphonate and 4,4'-diamino diphenyl diethylsiloxane, and 1,3-bis-(4-aminophenoxy)benzene, forming a wet film from the slurry, and imidizing the film to substantially 90% or more completion of the crosslinking reaction, where imidization affects crosslinking of the polyimide and chemical bonding of the polyimide to said graphene oxide platelets. An INDEPENDENT CLAIM is included for graphene oxide platelet-filled polyimide film, which is made by the process, and having a thickness of 1-200 microm. DESCRIPTION OF DRAWING(S) - The drawing shows a shematic view illustrating production of paper, mat, film, and membrane of simply aggregated graphite or natural graphite particles flakes/platelets. Particles of natural graphite (100) Graphite intercalation compound (102) Graphite worms (104) Flexible graphite foil (106) Expanded graphite flakes (108)