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Preparation method for graphene reinforced polymer porous sponge fiber

A porous sponge and polymer technology, applied in the direction of single-component synthetic polymer rayon, chemical post-treatment of synthetic polymer rayon, fiber treatment, etc., to achieve the effect of low density, large specific surface area, and easy large-scale production

Inactive Publication Date: 2014-02-26
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, research on graphene-reinforced composite fibers (CN 103046151 A, CN 102828267 A, CN 102586951 A, CN 102926020 A, CN 102534837 A) is limited to the mixing of graphene solutions with other blendable polymers, Graphene-polymer composite fibers are obtained by in-situ polymerization and traditional wet, melt or dry spinning, and the most studied of these fibers are their breaking strength, electrical conductivity, etc., and no other properties and shapes have been reported. fiber research

Method used

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specific Embodiment approach

[0021] The specific embodiment of the preparation method of a kind of graphene-reinforced polymer porous sponge fiber of the present invention comprises the following steps:

[0022] (1) Under room temperature, a certain concentration of graphene oxide solution is ultrasonically treated in an ultrasonic bath of 1-50 Hz for 0.5-1 h to obtain a uniformly dispersed graphene oxide solution. A certain amount of polymer is dissolved in the corresponding solvent to obtain a certain concentration of polymer solution. Adding the uniformly dispersed graphene oxide dispersion solution into the polymer solution, slowly adding while stirring, and continuing stirring for 4-8 hours after complete addition, to obtain a uniformly mixed graphene oxide-polymer blended spinning solution.

[0023] (2) Put the graphene oxide-polymer blended spinning solution to stand for 8-12 hours for defoaming, transfer it to the wet spinning equipment, and use the spinneret with an aperture of 0.07-0.1mm to spra...

Embodiment 1

[0028] (1) At room temperature, a graphene oxide solution with a mass concentration of 2.5% was ultrasonically treated in a 1 Hz ultrasonic bath for 0.5 h to obtain a uniformly dispersed graphene oxide solution. Then a certain amount of regenerated cellulose pulp is soaked, squeezed, crushed, aged, yellowed and dissolved to obtain a regenerated cellulose solution, in which the solid content in the spinning solution: 6.81%, alkali content: 4.56%, viscosity: 41s, maturity: 8ml (10%NH4Cl), add the uniformly dispersed graphene oxide solution into the regenerated cellulose solution, the mass ratio of graphene in the mixed solution is 5%, add slowly while stirring, and wait until it is completely added Stirring was continued for 4 hours to obtain a uniformly mixed graphene oxide-regenerated cellulose blended spinning solution.

[0029] (2) Let the graphene oxide-regenerated cellulose blended spinning solution stand for 8 hours for defoaming, transfer it to the wet spinning equipment...

Embodiment 2

[0033] (1) At room temperature, the graphene oxide solution with a mass concentration of 3% was ultrasonically treated in a 25Hz ultrasonic bath for 0.8h to obtain a uniformly dispersed graphene oxide solution. A certain amount of polyacrylonitrile is dissolved in a certain concentration of DMF solution to obtain a polyacrylonitrile solution. Add the uniformly dispersed graphene oxide solution into the polyacrylonitrile solution, wherein the content of graphene oxide in the mixed solution is 8%, slowly add it while stirring, and continue stirring for 5 hours after it is completely added, to obtain a uniformly mixed graphene oxide - Polyacrylonitrile blend spinning solution.

[0034] (2) The graphene oxide-polyacrylonitrile blended spinning solution was degassed for 9 hours, transferred to the wet spinning equipment, and the spinning solution was sprayed into the coagulation bath by using a spinneret with an aperture of 0.08 mm to solidify into For the fiber, the coagulation b...

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Abstract

The invention provides a preparation method for graphene reinforced polymer porous sponge fiber. The preparation method is characterized in that: the graphene reinforced polymer porous sponge fiber is prepared by subjecting an oxidized graphene solution having a certain concentration to ultrasonic processing to obtain a uniformly dispersed oxidized graphene solution; dissolving a polymer in a solvent to obtain a polymer solution with a certain concentration; adding the dispersed graphene solution into the polymer solution under stirring to obtain a graphene-polymer blend spinning solution; spraying the graphene-polymer blend spinning solution through a spinning nozzle into a coagulating bath to form fiber by utilization of a wet-method spinning device; washing with water, reducing, and washing with water again; and quickly subjecting the wet fiber to freeze drying or supercritical drying to obtain the graphene reinforced polymer porous sponge fiber. The preparation method is simple in technology and low in cost, and is suitable for large-scale production. The fiber has advantages of high strength, good antistatic performance, good elasticity, small density, large specific surface area, and the like. The fiber can be used for preparing heat insulating fabrics in the weaving field, and can be used for water treatment in the environment protection field, and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a method for preparing fibers, in particular to a method for preparing graphene-reinforced polymer porous sponge fibers. Background technique [0002] Graphene is a new type of carbon nano light material with a unique two-dimensional crystal structure of a single atomic layer. Since it was discovered by A.K. Geim in the United Kingdom in 2004, it has attracted extensive attention from the scientific and industrial circles. This material has been extensively studied due to its ultra-high strength, electrical conductivity, thermal conductivity and other properties. Using natural graphite as raw material, graphene produced by various methods has been widely used in the preparation of various composite materials. Graphene can increase the mechanical properties, electrical conductivity and thermal conductivity of composite materials. But so far, research on graph...

Claims

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Application Information

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IPC IPC(8): D01F6/54D01F2/08D01F9/04D01F11/06D01F11/02D01F11/00D01D5/247D01D5/06D01D1/02D01D1/10
Inventor 郭肖青曲丽君田明伟张宪胜
Owner QINGDAO UNIV
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