Polyimide-graphene composite material and method for preparing same
AssigneeKorea Institute of Science and Technology
InventorsNam Ho YOU, Ok-kyung PARK, Bon-Cheol KU, Joong Hee LEE, Munju GOH
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Abstract
The present disclosure relates to a polyimide-graphene composite material and a method for preparing same. More particularly, it relates to a polyimide-graphene composite material prepared by adding modified graphene and a basic catalyst during polymerization of a polyimide precursor so as to improve mechanical strength and electrical conductivity and enable imidization at low temperature and a method for preparing same.
Claims12
A method for preparing a polyimide-graphene composite material, comprising:
- modifying graphene by covalently bonding an amine-substituted aromatic or aliphatic compound on the surface of the graphene;
- performing polymerization by adding the modified graphene to a polyimide precursor;
- and
- heat-treating a polyimide precursor-graphene composite prepared from the polymerization to prepare a polyimide-graphene composite material.
A method for preparing a polyimide-carbon compound composite material, comprising:
- modifying a carbon compound by covalently bonding an amine-substituted aromatic or aliphatic compound on the surface of the carbon compound;
- performing polymerization by adding the modified carbon compound to a polyimide precursor;
- and
- heat-treating a polyimide precursor-carbon compound composite prepared from the polymerization to prepare a polyimide-carbon compound composite material,
- wherein the carbon compound is at least one selected from a group consisting of carbon nanotube and clay.
A method for preparing a polymer-graphene composite material, comprising:
- modifying graphene by covalently bonding an amine-substituted aromatic or aliphatic compound on the surface of the graphene;
- performing polymerization by adding the modified graphene to a polymer precursor;
- and
- heat-treating a polymer precursor-graphene composite prepared from the polymerization to prepare a polymer-graphene composite material,
- wherein the polymer precursor is at least one selected from a group consisting of polyacrylonitrile, polyamide, polybenzoxazole and polybenzimidazole.
Dependencies are inferred from the claim text.