Abstract: A basalt-fiber-reinforced thermoplastic composite material may include a thermoplastic resin and a basalt fiber as a reinforcement, wherein the basalt fiber is surface-treated with an alkoxy-group-substituted silane compound.

Abstract: Provided are a boron-nitride nanoplatelet(s) (BNNP)/metal nanocomposite powder and a preparing method thereof, the BNNP/metal nanocomposite powder including a base metal and BNNP dispersed in the base metal and configured to serve as a reinforcement of the base metal, wherein the BNNP are interposed between metal particles of the base metal in the form of a thin film of a plurality of layers and combined with the metal particles, and an amount of the BNNP in the base metal is greater than 0 vol % and less than 90 vol %.

Abstract: A basalt-fiber-reinforced thermoplastic composite material may include a thermoplastic resin and a basalt fiber as a reinforcement, wherein the basalt fiber is surface-treated with an alkoxy-group-substituted silane compound.

Abstract: A basalt-fiber-reinforced thermoplastic composite material may include a thermoplastic resin and a basalt fiber as a reinforcement, wherein the basalt fiber is surface-treated with an alkoxy-group-substituted silane compound.

Abstract: Provided are a boron-nitride nanoplatelet(s) (BNNP)/metal nanocomposite powder and a preparing method thereof, the BNNP/metal nanocomposite powder including a base metal and BNNP dispersed in the base metal and configured to serve as a reinforcement of the base metal, wherein the BNNP are interposed between metal particles of the base metal in the form of a thin film of a plurality of layers and combined with the metal particles, and an amount of the BNNP in the base metal is greater than 0 vol % and less than 90 vol %.

Abstract: The present invention relates to a multi-layer graphene-metal-polymer sheet for shielding electromagnetic wave, wherein an electromagnetic wave shielding effect is able to be increased by using graphene-metal nanocomposite powder in which graphene and metal particles are bonded as a conductive material and by constituting a multi-layer structure instead of increasing a content of the graphene-metal nanocomposite powder.

Abstract: A basalt-fiber-reinforced thermoplastic composite material may include a thermoplastic resin and a basalt fiber as a reinforcement, wherein the basalt fiber is surface-treated with an alkoxy-group-substituted silane compound.

Abstract: The present disclosure relates to a graphene-nanomaterial complex, a flexible and stretchable complex including the same, and methods for manufacturing the complexes. A graphene-nanomaterial complex according to a first aspect of the present disclosure includes a plurality of graphenes and nanomaterials disposed between the graphenes, in which the graphenes are not disposed on the same plane to form a three-dimensional (3D) graphene structure, and the graphenes, the nanomaterials or both form an electrical network.

Abstract: The present invention relates to a multi-layer graphene-metal-polymer sheet for shielding electromagnetic wave, wherein an electromagnetic wave shielding effect is able to be increased by using graphene-metal nanocomposite powder in which graphene and metal particles are bonded as a conductive material and by constituting a multi-layer structure instead of increasing a content of the graphene-metal nanocomposite powder.

Abstract: A high-strength and ultra heat-resistant high entropy alloy (HEA) matrix composite material and a method of preparing the HEA matrix composite material are provided. The HEA matrix composite material may include at least four matrix elements among Co, Cr, Fe, Ni, Mn, Cu, Mo, V, Nb, Ta, Ti, Zr, W, Si, Hf and Al, and a body-centered cubic (BCC) forming alloy element.

Abstract: The present disclosure relates to a graphene-nanomaterial complex, a flexible and stretchable complex including the same, and methods for manufacturing the complexes. A graphene-nanomaterial complex according to a first aspect of the present disclosure includes a plurality of graphenes and nanomaterials disposed between the graphenes, in which the graphenes are not disposed on the same plane to form a three-dimensional (3D) graphene structure, and the graphenes, the nanomaterials or both form an electrical network.

Abstract: The present invention provides a method of making a carbon nanotubes fiber by providing a polyethylene terephthalate substrate; contacting the polyethylene terephthalate substrate with a polyvinyl alcohol polymer solution to form a polyvinyl alcohol polymer layer on the polyethylene terephthalate substrate; contacting the polyvinyl alcohol polymer layer with a carbon nanotube solution, wherein the carbon nanotubes solution comprises one or more carbon nanotubes; forming a nanotube layer on the polyvinyl alcohol polymer layer; delaminating the polyvinyl alcohol polymer layer from the polyethylene terephthalate substrate to release a composite fiber layer; stretching the composite fiber layer; and drying the composite fiber layer.

Abstract: Provided is a method of manufacturing a hexagonal boron nitride nanosheet to mass-produce a high-quality hexagonal boron nitride nanosheet at a low temperature in a safe process. The method of manufacturing a hexagonal boron nitride nanosheet includes (a) obtaining an alkali metal ion or alkali earth metal ion from a salt mixture including at least two kinds of alkali metal salt or alkali earth metal salt, (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or alkali earth metal ion into layers of hexagonal boron nitride, and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or alkali earth metal ion from the hexagonal boron nitride interlayer compound.

Abstract: The present invention relates to a carbon nanomaterial, a carbon nanomaterial-polymer composite material and a carbon fiber-carbon nanomaterial-polymer composite material including the carbon nanomaterial, and methods of preparing the same, and more particularly, to a carbon nanomaterial functionalized by a functional molecule including both an aromatic hydrocarbon ring and a polar group through mechanical milling, a carbon nanomaterial-polymer composite material and a carbon fiber-carbon nanomaterial-polymer composite material including the carbon nanomaterial, and methods of preparing the same.

Abstract: Provided is a method of manufacturing a hexagonal boron nitride nanosheet to mass-produce a high-quality hexagonal boron nitride nanosheet at a low temperature in a safe process. The method of manufacturing a hexagonal boron nitride nanosheet includes (a) obtaining an alkali metal ion or alkali earth metal ion from a salt mixture including at least two kinds of alkali metal salt or alkali earth metal salt, (b) preparing a hexagonal boron nitride interlayer compound by inserting the alkali metal ion or alkali earth metal ion into layers of hexagonal boron nitride, and (c) obtaining a hexagonal boron nitride nanosheet by removing the alkali metal ion or alkali earth metal ion from the hexagonal boron nitride interlayer compound.

Abstract: The present invention provides a method of making a carbon nanotubes fiber by providing a polyethylene terephthalate substrate; contacting the polyethylene terephthalate substrate with a polyvinyl alcohol polymer solution to form a polyvinyl alcohol polymer layer on the polyethylene terephthalate substrate; contacting the polyvinyl alcohol polymer layer with a carbon nanotube solution, wherein the carbon nanotubes solution comprises one or more carbon nanotubes; forming a nanotube layer on the polyvinyl alcohol polymer layer; delaminating the polyvinyl alcohol polymer layer from the polyethylene terephthalate substrate to release a composite fiber layer; stretching the composite fiber layer; and drying the composite fiber layer.

Abstract: Disclosed is a hybrid porous carbon fiber and a method for fabrication thereof. Such fabricated porous carbon fibers contain a great amount of mesopores as a porous structure readily penetrable by electrolyte. Accordingly, the hybrid porous carbon fibers of the present disclosure are suitable for manufacturing electrodes with high electric capacity.

Abstract: Graphene/metal nanocomposite powder and a method of preparing the same are provided. The graphene/metal nanocomposite powder includes a base metal and graphenes dispersed in the base metal. The graphenes act as a reinforcing material for the base metal. The graphenes are interposed as thin film types between metal particles of the base metal and bonded to the metal particles. The graphenes contained in the base metal have a volume fraction exceeding 0 vol % and less than 30 vol % corresponding to a limit within which a structural change of the graphenes due to a reaction between the graphenes is prevented.

Abstract: The present invention features in preferred aspects a method of fabricating nano composite powder consisting of carbon nanotubes and metal matrix powder is disclosed. The method includes a low-speed milling process of milling and mixing the carbon nanotubes and the metal matrix powder, and a high-speed milling process of milling the carbon nanotubes and the metal matrix powder which are homogenously mixed in the low-speed milling process to homogenously disperse the carbon nanotubes in the metal matrix powder. In certain preferred aspects, the method can prevent damage of the carbon nanotube and can homogenously disperse the carbon nanotubes in the metal matrix.

Abstract: The invention relates to methods for fabricating ceramic nanocomposite powders, comprising a ceramic matrix and carbon nanotubes homogeneously dispersed in the ceramic matrix. The ceramic nanocomposite powders of the invention can prevent property deterioration due to agglomeration of carbon nanotubes.