Composite material and method for producing the same

Patent metadata

Field	Value
Publication number	US-9604884-B2
Application number	US-201314415573-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Sep 3, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

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.

First claim

The invention claimed is:

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.

Assignees

• Sekisui Chemical Co Ltd
• Nat Univ Corp Kumamoto Univ

Inventors

• Nozato Shoji
• Nakasuga Akira
• Ihara Hirotaka
• Takafuji Makoto
• Ganapathy Hullathy Subban
• Fukuda Rika

Classifications

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• Y10T428/30

  Self-sustaining carbon mass or layer with impregnant or other layer · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C04B35/524 Primary

  obtained from polymer precursors, e.g. glass-like carbon material · CPC title

• C01B31/0438

  Chemistry & Metallurgy · mapped topic