Preparation method for carbon-silicon composite material

A composite material and manufacturing method technology, applied in the field of non-metallic materials, can solve the problems of poor wear resistance of materials, difficulty in forming a sealing lubricating film, and short service life, and achieve good wear resistance

Inactive Publication Date: 2014-08-06
无锡市前洲电碳厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dry friction under high temperature conditions, it is difficult for existing materials to form a sealing lubricating film. The reasons are: insufficient self-lubricating properties and poor wear resistance of materials, which is a major problem in the sealing field. The test of friction kettle materials adopts international The most advanced high-quality mechanical carbon in the world does not have a long life, and the price is very expensive. Many domestic counterparts have invested a lot in research and development in this area, with little effect. The key is that the specific gravity of carbon graphite powder and silicon powder is too different. The uniformity of distribution in graphite materials is the key to product quality

Method used

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  • Preparation method for carbon-silicon composite material

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: A kind of manufacturing method of carbon-silicon composite material of the present invention adopts the following process steps: its formula ratio is counted in parts by weight:

[0023] 1. Preparation of silicon powder additive:

[0024] Take 12 parts of silicon powder, 3 parts of silica sol, 6 parts of molybdenum disulfide, and 60 parts of biphenyl, add them into a stirring tank and stir them well at a speed of 400 rpm, stir at room temperature for 30 minutes, then start to heat up, and the temperature rises to 135°C , add 70 parts of melted coal tar pitch, the temperature of melted coal tar pitch is 130°C, the melted coal tar pitch accounts for 30% of the whole clinker, continue to stir and heat up, the temperature is 150°C, and it takes 1 hour to make silicon powder additive mixture. The particle size of the silicon powder is 0.5 micron.

[0025] 2. Preparation of clinker:

[0026] Add 3 parts of carbon black powder, 8 parts of graphite powder, 40 p...

Embodiment 2

[0039] Embodiment two: the manufacture method of a kind of carbon-silicon composite material of the present invention adopts the following process steps: its formula ratio is counted by weight parts:

[0040] 1. Preparation of silicon powder additive:

[0041] Take 19 parts of silicon powder, 4.5 parts of silica sol, 9 parts of molybdenum disulfide, and 70 parts of biphenyl, add them into a stirring tank and stir them well at a speed of 450 rpm, stir at room temperature for 35 minutes, then start to heat up, and the temperature rises to 142.5°C , add 75 parts of melted coal tar pitch, the temperature of melted coal tar pitch is 140°C, and the melted coal tar pitch accounts for 32% of the whole clinker, continue to stir and heat up, the temperature is 155°C, and the time takes 1.25 hours to make silicon powder additive mixture. The particle size of the silicon powder is 0.75 microns.

[0042] 2. Preparation of clinker:

[0043] Add 4 parts of carbon black powder, 11.5 parts ...

Embodiment 3

[0054] Embodiment three: the manufacturing method of a kind of carbon-silicon composite material of the present invention adopts following process steps: its formula ratio is counted in parts by weight:

[0055] 1. Preparation of silicon powder additive:

[0056] Take 26 parts of silicon powder, 6 parts of silica sol, 12 parts of molybdenum disulfide, and 80 parts of biphenyl, add them into a stirring tank and stir them well at a speed of 500 rpm, stir at room temperature for 40 minutes, then start to heat up, and the temperature rises to 150°C , add 80 parts of melted coal tar pitch, the temperature of melted coal tar pitch is 150°C, the melted coal tar pitch accounts for 34% of the whole clinker, continue to stir and heat up, the temperature is 160°C, and it takes 1.5 hours to make silicon powder additive mixture. The particle size of the silicon powder is 1 micron.

[0057] 2. Preparation of clinker:

[0058]Add 5 parts of carbon black powder, 15 parts of graphite powder...

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Abstract

A preparation method for a carbon-silicon composite material is characterized by comprising: taking silicon powder, silicon sol, molybdenum disulfide and biphenyl, adding into a stirred kettle, stirring, heating, and adding melt coal tar pitch, so as to prepare a silicon-powder additive mixed solution; adding carbon black powder, graphite powder, pitch coke powder and petroleum coke powder into a kneading kettle for kneading, heating, adding the silicon-powder additive mixed solution, stirring and mixing to prepare a clinker; and performing hot rolling on the mixed clinker to obtain thin sheets, cooling, grinding into a powder, performing compression molding, roasting, performing coal tar pitch dipping, rough turning, performing resin dipping, turning, performing secondary resin dipping, and curing to obtain a finished product. Through the combination of carbon and silicon, the silicon powder has good wear resistance; a grinding kettle end and carbon graphite have auxiliary motion or relative independent motion, carbon graphite is not easy to grind and extrude, is relatively easy to extrude on the end surface of the grinding kettle, so that relatively slide between materials is formed; and the prepared carbon-silicon composite material has a service life being 2-3 times of the service life of a conventional material.

Description

technical field [0001] The invention relates to a method for manufacturing a carbon-silicon composite material, and in particular belongs to the technical field of non-metallic materials. Background technique [0002] With the continuous improvement and development of technology, in the field of actual production and application, the demand for professionally targeted materials is becoming more and more urgent. Facts have proved that the production cost of using professionally targeted materials is lower than that of materials with a wide range of applications , Long service life is guaranteed. Dry friction under high temperature conditions, it is difficult for existing materials to form a sealing lubricating film. The reasons are: insufficient self-lubricating properties and poor wear resistance of materials, which is a major problem in the sealing field. The test of friction kettle materials adopts international The most advanced high-quality mechanical carbon in the worl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/36C01B32/984
Inventor 吴强
Owner 无锡市前洲电碳厂
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