▎ 摘 要
NOVELTY - A composite material comprises 1-3 wt.% epoxy resin-coated graphene oxide with core-shell structure, 7-29 wt.% ceramic powder and 70-90 wt.% polyphenylene ether. USE - Composite material used for preparing copper clad laminate and antenna substrate (claimed). ADVANTAGE - The material has reduced density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite material comprising taking graphene oxide and solvent, adding epoxy resin component, ultrasonicating, adding and ceramic powder, and mixing and preparing film.