Composite material and method for producing the same
There is provided a composite material having excellent adhesion between a resin and a graphene-like carbon material and a method for producing the same. A composite material comprising a substrate comprising a resin, and a graphene-like carbon material layer provided so as to cover at least part of a surface of the substrate, wherein the graphene-like carbon material layer is composed of a graphene-like carbon material obtained by pyrolyzing a polymer in a composition in which the polymer is fixed to graphite or primary exfoliated graphite.
1. A composite material comprising a substrate comprising a resin, and a carbon material layer provided so as to cover at least part of a surface of the substrate,
the carbon material layer being composed of a carbon material comprising graphene or a stack of a plurality of graphene layers obtained by pyrolyzing a polymer in a composition in which the polymer is fixed to graphite or primary exfoliated graphite;
wherein part of the carbon material enters an interior of the substrate from the surface of the substrate.
2. The composite material according to claim 1 , wherein the carbon material comprises the polymer, and
a pyrolysis initiation temperature and pyrolysis end temperature of the polymer contained in the carbon material are higher than a pyrolysis initiation temperature and pyrolysis end temperature of the polymer before the fixation, respectively.
3. The composite material according to claim 1 , wherein the carbon material does not comprise the polymer.
4. The composite material according to claim 1 , wherein the substrate comprising, a resin is resin fine particles, and the carbon material layer is formed so as to cover outer surfaces of the resin fine particles.
5. The composite material according to claim 1 , wherein the substrate comprising a resin is a sheet, and the carbon material layer is provided on at least one surface of the sheet.
6. A method for producing the composite material according to claim 1 , comprising steps of:
providing a substrate comprising a resin, and a carbon material; and
bringing the carbon material into contact with at least part of a surface of the substrate comprising a resin, and performing beating while allowing a fluid in a supercritical or subcritical state to act, wherein
the step of providing a carbon material is performed by pyrolyzing a polymer in a composition in Which the polymer is fixed to graphite or primary exfoliated graphite.
7. The method for producing the composite material according to claim 6 , wherein as the supercritical or subcritical fluid, CO 2 in a supercritical or subcritical state is used.