Preparation method for porous carbon material and application of acquired porous carbon material

A technology of porous carbon and powder raw materials, which is applied in the preparation/purification, application, household appliances, etc. of carbon, can solve the problem of not being able to form a multi-level porous structure, and achieves the effect of solving manufacturing difficulties and fast sintering speed.

Active Publication Date: 2018-12-07
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The oxide powder used in this patent needs to undergo a reduction chemical reaction to produce a porous structure after printing, but it cannot form a multi-level porous structure

Method used

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  • Preparation method for porous carbon material and application of acquired porous carbon material
  • Preparation method for porous carbon material and application of acquired porous carbon material
  • Preparation method for porous carbon material and application of acquired porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 100 parts by mass of polyacrylonitrile powder with a median particle size of 5 μm and 0.5 parts by mass of 50 nm silica were uniformly mixed, wherein the polyacrylonitrile powder came from pulverization.

[0040] Add the prepared 20kg powder raw material into the powder bin of the 3D printer, import the 3D solid figure of the desired product into the control computer, and then use the layering software to slice the 3D model; the 3D printer setting parameters are as follows: laser power 20W , the laser scanning speed is 500inch / s, the laser scanning spacing is 500μm, the thickness of the printed single layer is 50μm, the model filling rate is 30%, and the printing temperature is 100℃. The thermoplastic polymer powder is locally heated and sintered layer by layer to complete the green body preparation.

[0041] The green body is placed in a heat treatment furnace whose protective gas is nitrogen, and is heated to 1000°C at a heating rate of 30°C / min for carbonization for 5...

Embodiment 2

[0043] 100 parts by mass of polyvinylidene chloride powder with a median particle size of 10 μm and 0.1 part by mass of 50 nm titanium dioxide were uniformly mixed, wherein the polyvinylidene chloride powder was from a suspension polymerization product.

[0044] Add the prepared 30kg powder raw material into the powder bin of the 3D printer, import the 3D solid figure of the desired product into the control computer, and then use the layering software to slice the 3D model; the parameters of the 3D printer are set as follows: laser power 30W , the laser scanning speed is 300inch / s, the laser scanning spacing is 300μm, the thickness of the printed single layer is 80μm, the model filling rate is 100%, and the printing temperature is 100℃. The thermoplastic polymer powder is locally heated and sintered layer by layer to complete the green body preparation.

[0045] The green body is placed in a heat treatment furnace whose protective gas is nitrogen, and is heated to 300°C at a he...

Embodiment 3

[0047] 100 parts by mass of polyether ether ketone powder with a median particle size of 50 μm and 1 mass part of 100 nm magnesium stearate flow aid were uniformly mixed, wherein the polyether ether ketone powder was from a solid phase precipitation product.

[0048] Add the prepared 25kg powder raw material into the powder bin of the 3D printer, import the 3D solid figure of the desired product into the control computer, and then use the layering software to slice the 3D model; the parameters of the 3D printer are set as follows: laser power 60W , the laser scanning speed is 300inch / s, the laser scanning spacing is 100μm, the thickness of the printed single layer is 120μm, the model filling rate is 60%, and the printing temperature is 350℃. The thermoplastic polymer powder is locally heated and sintered layer by layer to complete the green body preparation.

[0049] The green body is placed in a heat treatment furnace whose protective gas is argon, and is heated to 1500°C at a...

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Abstract

The invention relates to a preparation method for a porous carbon material. The preparation method comprises the following steps: (1) mixing thermoplastic polymer powder with flow promoter, thereby acquiring a powdered raw material, and then performing 3D printing to manufacture a green component, and (2) placing the green component into a thermal treatment furnace with a protective atmosphere andthen carbonating under high temperature, thereby acquiring a product of the porous carbon material. In the invention, a 3D printing technique is adopted for sintering the thermoplastic polymer so asto form a carbon precursor and then carbonization is performed so as to acquire the porous carbon material with a multilevel porous structure; the preparation method for a three-dimensional porous carbon material is low in cost, universal and high in efficiency; the prepared porous carbon material can be applied to the fields of catalyst carriers, batteries, adsorption separation, and the like.

Description

technical field [0001] The invention belongs to the field of porous material preparation, and in particular relates to a preparation method of a porous carbon material, the obtained porous carbon material and its application. Background technique [0002] Porous carbon materials are stable in properties, resistant to acids, alkalis and high temperatures, and have a wide range of applications in supercapacitors, gas storage, separation and adsorption, and catalyst loading. Most of the porous carbons currently developed are materials with a single pore size, which is difficult for the adsorption and diffusion of substances, thus limiting the wide application of materials. Hierarchical porous carbons with distribution of micropores, mesopores and / or macropores can combine the characteristics of porous carbon materials with different pore sizes, and show advantages over single-pore structure materials in terms of diffusion and mass transfer. [0003] Most of the preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/524C04B35/622C04B38/06C01B32/05
CPCC01B32/05C04B35/524C04B35/622C04B38/067
Inventor 杨杰黄岐善
Owner WANHUA CHEM GRP CO LTD
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