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High-temperature resistant carbon fibre product and preparation method thereof

A technology of high temperature resistance and products, applied in the field of high temperature resistant carbon fiber products and their preparation, can solve the problems of long production cycle, expensive raw materials, and high product prices, and achieve the effects of low production cost, simple production process and reduced raw material cost.

Active Publication Date: 2010-12-15
YANTAI KAIBO COMPOSITE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing C / C composite material manufacturing technology is chemical vapor deposition (CVD method, see figure 1 ) The raw materials used are expensive, the process is complicated, the production cycle is long, and the product price is high, which has become a serious obstacle to the wide application of C / C composite materials in single (poly) silicon furnaces

Method used

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  • High-temperature resistant carbon fibre product and preparation method thereof
  • High-temperature resistant carbon fibre product and preparation method thereof
  • High-temperature resistant carbon fibre product and preparation method thereof

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Embodiment Construction

[0041] The following is attached figure 2 Embodiments of the present invention will be further described.

[0042] The general process steps of the method of the present invention are as follows.

[0043] 1. Configure adhesive

[0044] Dilute the phenolic resin with ethanol to a density of 0.95-1.0g / cm 3 , add 5-10% (the weight of the phenolic resin is 1) of graphite powder, 3-5% of silicon carbide, and 0.2-0.6% of coupling agent, mix evenly and place in a closed container for use.

[0045] 2. Carbon fiber pretreatment

[0046] Put the carbon fiber into the vacuum carbonization furnace, after vacuuming, the flow rate is 0.16m 3 N / hour 2 Gas protection (maintain positive pressure), raise the furnace temperature to 1050°C at a heating rate of 100°C per hour, keep it for 1 hour, and cool it to below 200°C with the furnace temperature. The carbon fibers after being released from the oven are broken up by a carding machine (or an air flow breaker), so that they become disord...

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Abstract

The invention relates to a preparation method of a high-temperature resistant carbon fibre product and a product thereof. The preparation method comprises the following steps of preparing adhesive, preprocessing carbon fibre, gum dipping, drying, hot pressing, carbonizing and purifying. The invention has the advantages of low requirement on production materials, simpler preparing process, shorter production period and lower production cost.

Description

technical field [0001] The present invention relates to a method for preparing high-temperature-resistant carbon fiber products and products obtained by applying the method, in particular to a method for preparing structural parts such as heat shields and heat-resistant plates for single (poly)crystalline silicon furnaces and structures obtained by applying the method pieces. Background technique [0002] Single (poly) silicon is the main raw material for solar power generation. In recent years, due to the rapid development of my country's solar power generation industry, the mono (poly) silicon industry has developed rapidly. At present, there are more than 100 single (poly) silicon manufacturers in my country existing and under construction with more than 1,000 tons of single (poly) silicon furnaces, and their single (poly) silicon furnaces exceed 10,000 units. Thermal field structural parts such as hot plates and heating elements are made of graphite materials. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/83
Inventor 张南
Owner YANTAI KAIBO COMPOSITE MATERIAL TECH