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Preparation method of expansible thermoplastic graphene porous carbon material

A porous carbon material and graphene technology, applied in the field of materials, can solve the problems of increased thermal conductivity of sheet materials, and achieve the effects of high elasticity, strong practicability, and easy availability of raw materials

Inactive Publication Date: 2017-12-29
佛山慧创正元新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if technically possible, falling below this limit is disadvantageous, since this causes a sharp increase in the thermal conductivity of the sheet, which must be compensated by increasing its thickness

Method used

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  • Preparation method of expansible thermoplastic graphene porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Mix 20 parts of elastic polymer matrix and 1 part of vinyltrichlorosilane evenly and put them into a vacuum furnace for high-temperature kneading. The vacuum pressure in the furnace is 5*10-2Pa, and the reaction temperature is 780°C;

[0025] (2) Mix 7 parts of graphene and 1 part of dimethyl silicone oil, the ball-to-material ratio is 2:105, add it into a high-speed ball mill and mill it at a speed of 1800 rpm for 2 hours, sieve and sort, and the sieve aperture is 3000 mesh ;

[0026] (3) after the Graphene dispersion powder that step (2) obtains mixes with the metal powder mixture with the mass ratio of 15:1, for subsequent use;

[0027] (4) inject the elastic polymer solution prepared in step (1) into a twin-screw extruder, extrude, press mold, demold, and set aside, wherein the screw temperature is 220 ° C, and the screw speed is 1000 rpm;

[0028] (5) inject the graphene metal mixed powder in the step (3) into the pressure sprayer, be 20MPa with the spray pres...

Embodiment 2

[0031] (1) Mix 22 parts of elastic polymer matrix and 1 part of γ-chloropropyl trichlorosilane evenly and put them into a vacuum furnace for high-temperature kneading. The vacuum pressure in the furnace is 5*10-2Pa, and the reaction temperature is 800°C;

[0032] (2) Mix 9 parts of graphene and 2 parts of dimethyl silicone oil, the ball-to-material ratio is 2:105, add it to a high-speed ball mill and mill it at a speed of 1800 rpm for 2.5 hours, sieve and sort, and the sieve aperture is 3000 head;

[0033] (3) after the Graphene dispersion powder that step (2) obtains mixes with the metal powder mixture with the mass ratio of 15:1, for subsequent use;

[0034] (4) inject the elastic polymer solution prepared in step (1) into a twin-screw extruder, extrude, press mold, demold, and set aside, wherein the screw temperature is 230°C, and the screw speed is 1000 rpm;

[0035] (5) inject the graphene metal mixed powder in the step (3) into the pressure sprayer, be 20MPa with the sp...

Embodiment 3

[0038] (1) Mix 24 parts of the elastic polymer matrix and 2 parts of bis-(3-triethoxysilylpropyl)tetrasulfide evenly and add them to the vacuum furnace for high temperature mixing. The vacuum pressure in the furnace is 5*10-2Pa, and the reaction temperature is 820°C;

[0039] (2) Mix 11 parts of graphene and 3 parts of dimethyl silicone oil, the ball-to-material ratio is 2:105, add it into a high-speed ball mill and mill it at a speed of 1800 rpm for 3 hours, sieve and sort, and the sieve aperture is 3000 mesh ;

[0040] (3) after the Graphene dispersion powder that step (2) obtains mixes with the metal powder mixture with the mass ratio of 15:1, for subsequent use;

[0041] (4) inject the elastic polymer solution prepared in step (1) into a twin-screw extruder, extrude, press mold, demold, and set aside, wherein the screw temperature is 250°C, and the screw speed is 1000 rpm;

[0042] (5) inject the graphene metal mixed powder in the step (3) into the pressure sprayer, be 2...

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Abstract

The invention discloses a preparation method of an expansible thermoplastic graphene porous carbon material. The process comprises the following steps: performing vacuum pressurizing and refining an elastomer by an elastic polymer material, spray-coating a graphene and metal powder mixture on the surface layer of the elastomer in a high-pressure form, and performing solidification to obtain the expansible thermoplastic graphene porous carbon material. The expansible thermoplastic graphene porous carbon material prepared by the method has high elasticity, high toughness, excellent mechanical property and good application prospect.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a preparation method of an expandable thermoplastic graphene porous carbon material. Background technique [0002] Graphene, a highly dispersed atomic layer of carbon atoms in a hexagonal array, has attracted the interest of researchers trying to fabricate new composite materials for use in the field of molecular electronics, due to its high electrical conductivity and good mechanical properties. The combination of high electrical conductivity, good mechanical properties, high surface area, and low fabrication cost make graphene an ideal candidate for electrochemical applications. Suppose the carbon material has 2600m 2 / g active surface area and 10μF / m 2 Graphene has the potential to reach 260F / g in theoretical specific capacity. However, this high capacitance has not yet been achieved because it has proven difficult to completely disperse the graphene sheets and access al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08L101/00C09D1/00C09D5/03C09D7/12
CPCC08J2300/26C08J2483/04C09D1/00C09D5/033C08J7/0427
Inventor 邵光伟
Owner 佛山慧创正元新材料科技有限公司
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