Graphene composite heat-conducting film and preparation method thereof

The invention provides a graphene composite heat-conducting film and a preparation method thereof. The preparation method comprises the following steps: preparing a nanocellulose/ferroferric oxide compound; adding the nanocellulose/ferroferric oxide compound into graphene oxide slurry according to a...

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Bibliographic Details
Main Authors PAN ZHUOCHENG, PAN ZHIJUN, ZHOU MING
Format Patent
LanguageChinese
English
Published 14.07.2023
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
SEMICONDUCTOR DEVICES
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Summary:The invention provides a graphene composite heat-conducting film and a preparation method thereof. The preparation method comprises the following steps: preparing a nanocellulose/ferroferric oxide compound; adding the nanocellulose/ferroferric oxide compound into graphene oxide slurry according to a target mass ratio of the graphene oxide to the nanocellulose/ferroferric oxide compound, fully stirring, coating a substrate with the slurry, drying and rolling; carrying out carbonization and reduction treatment on the rolled film, and then carrying out graphene lattice defect repair treatment to obtain a fluffy graphene composite film; and flatly pressing the fluffy graphene composite film on the graphene composite heat-conducting film in vacuum. According to the invention, nano-crystalline cellulose is introduced, interacts with functional groups at the edge of graphene, and is directionally filled in gaps between graphene sheets; meanwhile, nano ferroferric oxide is introduced, nano iron is formed in the heat
Bibliography:Application Number: CN202310254628