Novel cellulose nanofibers which have a number-average fiber length of 250 nm or less and a number-average fiber diameter of 2-5 nm. The cellulose nanofibers are used to provide a cellulose nanofiber dispersion which has a low viscosity even when having a high concentration.
Publication number: WO2014061485A1 | Search similar patents
Filter comprising nanofiber and method for manufacturing same
The purpose of the present invention is to provide a filter comprising a nanofiber and a method for manufacturing the same, and the present invention relates to a filter manufactured by continuously stacking/forming a spinning solution by means of an electrospinning device comprising at least two units, and a method for manufacturing the same. A filter manufactured by the method is advantageous in that manufacturing processes can be made continuous, thereby making processes efficient and enabling mass production, and is characterized in that, by having a nanofiber nonwoven fabric, a filter having excellent filtering efficiency is manufactured.
Publication number: WO2015053442A1 | Search similar patents
Filter comprising nanofiber between substrates and method for manufacturing same
The purpose of the present invention is to provide a filter comprising a nanofiber between substrates, and the present invention is technically characterized in that a filter comprising a nanofiber is manufactured by electrospinning a polymer spinning solution on a first substrate such that a nanofiber nonwoven fabric is stacked and formed and then bonding a second substrate on the stacked nanofiber nonwoven fabric.
Publication number: WO2015053444A1 | Search similar patents
Hydrogel containing surface-treated nanofibers and method for preparing same
The present invention relates to a bio-adhesive hydrogel containing surface-treated nanofibers, a method for preparing the same, and a use of the same. The hydrogel using surface-treated nanofibers, which is provided through the present invention, has excellent bio-adhesive strength, and thus can be widely applied to bio-adhesives, supports for tissue engineering, or carriers for drug delivery.
Publication number: WO2015174643A1 | Search similar patents
Nanofiber filter medium having a nanofiber adhesive layer, and method for manufacturing same
The present invention relates to a filter, to a nanofiber filter, and to a method for manufacturing same. A method for manufacturing a nanofiber filter medium according to the present invention comprises the steps of: forming a nanofiber filter, including a base layer and a nanofiber adhesive layer coupled to at least one of the two sides of the base layer, wherein the nanofiber filter is formed by thermally bonding a hot melt sheet, having nanofibers attached thereon, to the base layer; preparing a nanofiber adhesive sheet having a nanofiber layer electrospun on the hot melt sheet; and thermally bonding the nanofiber adhesive sheet to at least one of the two sides of the base.
Publication number: WO2011052865A1 | Search similar patents
Filter medium having nanofibers on both sides of base and having improved heat resistance, and manufacturing method therefor
The present invention relates to a filter medium having nanofibers on both sides of a base and a manufacturing method therefor for overcoming the low thermal stability of conventional nanofiber filters, the filter medium having improved heat resistance by stacking the polymeric nanofibers on both sides of the base using electrospinning. The present invention is characterized by producing polymeric nanofibers on both sides of a base by successive electrospinning and thereby manufacturing a functional filter medium having process efficiency and price competitiveness and ensuring high efficiency and heat resistance.
Publication number: WO2014137095A1 | Search similar patents
Method for manufacturing conductive nanofiber
The problem addressed by the present invention is to provide a method for manufacturing a conductive nanofiber that can produce a conductive nanofiber that has sufficient conductivity using various types of plating metal and plating fluids without complicated operations. The problem is addressed by a method for manufacturing a conductive nanofiber characterized by including a fiber spinning step for fabricating the nanofiber according to an electrospinning process with a resin composition that includes (a) a thermoplastic resin, (b) a hyperbranched polymer having ammonium groups at molecular ends and a weight average molecular weight of 1,000 - 5,000,000, and (c) fine metal particles as the spinning material and a plating step for electroless plating of the nanofiber fabricated in the fiber spinning step.
Publication number: WO2015111755A1 | Search similar patents
Carbon nanofiber materials and lubricants
Nickel-containing carbon nanofiber (NiCNF) materials and lubricants comprising the nanofiber materials are described herein. The NiCNF materials comprise a plurality of elongate nickel-containing carbon nanofibers. Each NiCNF comprises a carbon nanofiber shaft that is capped at one end by a nickel nanoparticle encapsulated in multiple layers of graphitic carbon. The nanofibers typically have a generally circular cross-section (i.e., in the direction perpendicular to the length-axis of the fibers). The NiCNF materials as useful, e.g., in lubricant compositions, which also are described herein.
Publication number: US2015166921A1 | Search similar patents
Modified cellulose nanofiber-containing polyethylene microporous membrane, separator, and lithium cell using same
Provided is a modified cellulose nanofiber-containing polyethylene microporous membrane, characterized in comprising modified cellulose nanofibers having C
Publication number: WO2014017335A1 | Search similar patents
Novel pitch polymer used for preparing carbon nanofibers, carbon nanofibers using the pitch polymer, and carbon materials including the carbon nanofibers
The present invention relates to carbon nanofibers. More particularly, the present invention relates to a novel pitch polymer, which is formed by using the properties of carbon nanofibers which vary with the pitch properties, and has the physical properties suitable for use in the preparation of the carbon nanofibers having the desired characteristics; to carbon nanofibers having the desired physical properties by using the novel pitch polymer; and to carbon materials including the carbon nanofibers.
Publication number: WO2012081767A1 | Search similar patents
Multi-layered nanofiber filter medium using electro-blowing, melt-blowing or electrospinning, and method for manufacturing same
The present invention relates to a multi-layered nanofiber filter medium and a method for manufacturing same, in which, to improve the low heat resistance of existing filters, nanofibers are layered by continuously electro-blowing and electrospinning heat resistant polymer on a cellulose substrate. Additionally, the present invention relates to a multi-layered nanofiber filter medium and a method for manufacturing same, in which nanofibers are layered by continuously melt-blowing and electrospinning heat resistant polymer on a cellulose substrate.
Publication number: WO2015016450A1 | Search similar patents
Production method for carbon nanofibers, and carbon nanofibers
Provided is a method for highly actively producing carbon nanofibers. Also provided are carbon nanofibers that are obtained by said production method and that have excellent conductivity, crystallinity, and dispersibility. A carbon nanofiber production method that uses carbon monoxide as a carbon source and that uses as a catalyst an active species that has cobalt as a main component. The catalyst includes a carrier that has a specific surface area of 0.01-5 m2/g, that comprises an oxide that contains magnesium, and that supports 3-150 mass% of the active species. Carbon nanofibers that have excellent conductivity, crystallinity, and dispersibility can be more actively produced by controlling reaction temperature, the partial pressure of the carbon monoxide, and the flow rate of a raw material gas, and carbon nanofibers that have excellent conductivity, crystallinity, and dispersibility can be obtained.
Publication number: WO2015119102A1 | Search similar patents
Method for producing cellulose nanofiber dispersion, cellulose nanofiber dispersion, molded cellulose nanofiber article, and cellulose nanofiber composite
Disclosed is a method for producing a cellulose nanofiber dispersion which is appropriately usable in producing composite materials with polymer materials that are soluble in organic solvents over a wide range. The method for producing a cellulose nanofiber dispersion is characterized in that, for dispersing a cellulose nanofiber, which has a carboxylate-form group, in a medium containing an organic solvent, a conversion step, whereby said group in the cellulose nanofiber is converted from the carboxylate-form into a carboxylic acid-form, is conducted depending on the kind of said organic solvent.
Publication number: WO2010134357A1 | Search similar patents
Method and device for manufacturing nanofiber
Provided are a nanofiber manufacturing device and a nanofiber manufacturing method capable of mass-producing a nanofiber non-woven fabric having uniform air permeability. The nanofiber manufacturing device (1) is equipped with a transfer device (10) for transferring long sheets (W) at a predetermined transfer speed (V), a field emission device (20) for accumulating nanofibers on the long sheets (W) being transferred by the transfer device (10), an air-permeability measuring device (40) for measuring the air permeability of the long sheets (W) having the nanofibers accumulated by the field emission device (20), and a transfer speed control device (50) for controlling the transfer speed (V) on the basis of the air permeability (P) measured using the air-permeability measuring device (40).
Publication number: WO2012077869A1 | Search similar patents