Patent ID: 9745499
Date: 2017-08-29
CPC Classifications: C01B,C01P,C09K,Y10T

Claim:
1. A method for producing hexagonal boron nitride nanosheet/ceramic nanocomposite powder, comprising: modifying a surface of a hexagonal boron nitride nanosheet by covalent or non-covalent functionalization of the surface of the hexagonal boron nitride nanosheet, wherein the non-covalent functionalization is performed by π-stacking or Van der Walls bonding between the hexagonal boron nitride nanosheet and an organic material, and wherein the organic material is a monomeric compound that includes an aromatic hexagonal ring or an aromatic pentagonal ring selected from the group consisting of benzene, pyrene, pyridine, porphyrin, quinoline, isoquinoline, pyridazine, pyrimidine, pyrazine, cytosine, uracil, furan, pyrrole, thiophene, melamine, aminopyrene, benzyl benzoate, and combinations thereof; dispersing the surface-modified hexagonal boron nitride nanosheet into a solvent; adding powder of a matrix ceramic in the solvent in which the hexagonal boron nitride nanosheets are dispersed, to be dispersed therein; adding a surfactant upon adding the powder of the matrix ceramic, wherein the surfactant includes a member selected from the group consisting of tetradecyltrimethylammonium bromide (TTAB), cetyl trimethyl ammonium bromide (CTAB), sodium lauryl sulfate (SLS), sodium dodecyl sulfate (SDS), benzalkonium chloride, and combinations thereof; and removing the solvent, wherein the amount of the hexagonal boron nitride nanosheets dispersed in the hexagonal boron nitride nanosheet/ceramic nanocomposite powder is from above about 0 vol % to about 50 vol % or less.