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Preparation method of high-performance carbon-carbon composite carbon material

A carbon-carbon composite and carbon material technology is applied in the field of preparation of high-performance carbon-carbon composite carbon materials, which can solve the problems of low strength and high production cost of graphite materials, and achieve the effects of high product performance, increased density and guaranteed product quality.

Active Publication Date: 2018-11-02
SINOSTEEL NEW MATERIAL ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a high-performance carbon-carbon composite carbon material in view of the deficiencies of the prior art. Through the special superimposed structure of carbon cloth and paste powder, the overall density of the prefabricated block can be greatly increased while realizing The uniform distribution of carbon cloth and paste powder can greatly improve the mechanical strength of carbon-carbon composite materials, and solve the technical problem of high production cost caused by the low strength of graphite materials in the prior art

Method used

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  • Preparation method of high-performance carbon-carbon composite carbon material
  • Preparation method of high-performance carbon-carbon composite carbon material

Examples

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Embodiment 1

[0028] According to the drawings in the manual figure 1 A method for preparing a high-performance carbon-carbon composite carbon material in this example is described.

[0029] A method for preparing a high-performance carbon-carbon composite carbon material, comprising the following steps:

[0030] (a) Paste preparation, put the coke powder with a particle size of 3-20 μm obtained by grinding petroleum coke or asphalt glue into a carbon kneading pot and heat it to 120-140 ° C, then put it into a temperature of 200-200 ° C. After kneading in liquid asphalt at 230°C, the kneaded paste is cooled and crushed by a cold crusher to obtain a granular paste with a particle size of 2-5mm;

[0031] (b) superposition of rough bases, after the paste obtained in the step (a) is pulverized by a mechanical mill to a paste powder with a particle size of 10-100 μm, the paste is moved at a uniform speed by a distributing machine The rate of 20-80g / min is filled in the gap of the carbon cloth ...

Embodiment 2

[0039] Wherein, the same or corresponding parts as those in the first embodiment adopt the reference numerals corresponding to the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below; the difference between the second embodiment and the first embodiment is that : the step (c) also includes a press molding part, the rough blank obtained by the step (b) is packed into a mould, and the rough blank is carried out in an isostatic pressing molding mode with a pressure of 100Mpa and a molding time of 20-60min Press molding to form a prefabricated block A with a tight structure.

[0040] Further, the step (d) includes the impregnation part, placing the prefabricated block A obtained by pressing the molded part in a roasting furnace, burying it with yellow sand, and roasting it at a heating rate of 500-700 °C at a rate of 2 °C / h Afterwards, pressurize and impregnate it with an impregnation pressure of 0.2 MPa to obtain an imp...

Embodiment 3

[0046] Wherein, the same or corresponding parts as those in Embodiment 2 adopt the reference numerals corresponding to Embodiment 1. For the sake of simplicity, only the differences from Embodiment 2 are described below; the difference between Embodiment 3 and Embodiment 2 is that : The petroleum coke is ground to an average particle size of 20 μm with a mechanical pulverizer, and the moisture content of the petroleum coke used is <0.5%, the moisture content is <0.5%, and the volatile content is <1%. The obtained coke powder is put into a carbon kneading pot and preheated to 120°C, and the liquid pitch at a temperature of 200°C is put into the kneading pot according to 1 / 3 of the weight of the coke powder, and kneaded under a heat preservation condition of 180°C for 30 minutes. get the paste;

[0047] Grind the paste to obtain paste powder with an average particle size of 70 μm, and load it into a distributing machine. The carbon cloth woven by carbon fiber is selected as the...

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Abstract

The invention relates to the technical field of artificial graphite production, in particular to a preparation method of a high-performance carbon-carbon composite carbon material. The method comprises the steps of paste material preparation, rough blank overlaying, prefabricating for shaping, calcination treatment and graphitization treatment; after coke powder is fed into a carbon kneading pot for kneading with asphalt, cooling, crushing and then grinding are conducted on the coke powder, gaps and the upper surface of carbon cloth are evenly filled with paste material powder, and then a rough blank is formed; prefabricating for shaping is conducted on the rough blank by means of ballasting or needling; after a prefabricated block is placed in a calcination furnace for calcination, treatment is conducted by means of steeping or carbon deposition to form a calcination blank; finally, graphitization treatment is conducted on the calcination blank by means of high temperature. Through the special overlaying structure of the carbon cloth and the paste material powder, not only is the overall density of the prefabricated block improved, but also even distribution of the carbon cloth and the paste material powder is achieved, great improvement of the mechanical strength of the carbon-carbon composite material is achieved, and the technical problem is solved that in the prior art, the production cost is high due to low graphite material strength.

Description

technical field [0001] The invention relates to the technical field of artificial graphite production, in particular to a method for preparing a high-performance carbon-carbon composite carbon material. Background technique [0002] In the field of artificial graphite production, due to its special production process, various thermal field insulation materials and heating components are required in the production process. In the traditional production process, the insulation materials and heating components are mainly graphite materials. However, due to the graphite itself Low mechanical strength and performance limitations make the loss of graphite materials such as thermal insulation materials and heating elements in the production of artificial graphite extremely large, which seriously hinders the production of artificial graphite and increases production costs. [0003] Chinese patent application number: 2014106603252 discloses a wear-resistant graphite material preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/622
CPCC04B35/622C04B35/83
Inventor 黄岱李贺刘百明
Owner SINOSTEEL NEW MATERIAL ZHEJIANG
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