Method for prolonging service life of cured felt

A life-span and heating-curing technology, which is applied in the treatment of textile materials, coatings, mechanical cleaning, etc., can solve problems such as abnormal use, decreased thermal insulation performance, and oxidized felt, so as to prolong the service life, improve the service life, and remove The effect of dust and lint

Active Publication Date: 2021-12-03
青海高景太阳能科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Curing felt is suitable for various furnace types such as vacuum high-pressure gas quenching furnace, vacuum sintering furnace, pressurized vacuum sintering furnace, monocrystalline silicon furnace, polycrystalline silicon furnace, silicon carbide crystal growth furnace, etc., but in actual use, due to the vacuum of the vacuum furnace Affected by factors such as insufficient temperature and gas corrosion, it is inevitable that the cured felt will be oxidized and lost after long-term use, so that its thermal insulation performance will be reduced so that it cannot be used normally, which will affect production. Therefore, the present invention proposes a method for prolonging the service life of the cured felt. To solve the problems existing in the prior art

Method used

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  • Method for prolonging service life of cured felt
  • Method for prolonging service life of cured felt

Examples

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Embodiment 1

[0026] according to figure 1 As shown, the present embodiment proposes a method for prolonging the service life of the solidified felt, comprising the following steps:

[0027] Step 1: Curing Felt Pretreatment

[0028] Soak the prepared cured felt in advance, dry it in an oven after soaking, and then use high-pressure gas to wash the dried cured felt to blow off the broken fiber debris on the surface. Rinse each surface for 2 times, then soak, then use an oven to dry after soaking, and cool after drying to obtain a cleaned solidified felt. The soaking time in the step 1 is 20 minutes, and it is carried out at room temperature. Soaking, the drying time in the step 1 is 20 minutes, and the drying temperature is 60 degrees Celsius;

[0029] Step 2: Prepare the coating material

[0030] Stir and mix silicon carbide, graphite powder, curing agent, silicone resin, and organic solvent through a reaction kettle, mix evenly to obtain a coating material, then pour it into a container...

Embodiment 2

[0036] according to figure 1 As shown, the present embodiment proposes a method for prolonging the service life of the solidified felt, comprising the following steps:

[0037] Step 1: Curing Felt Pretreatment

[0038] Soak the prepared cured felt in advance, dry it in an oven after soaking, and then use high-pressure gas to wash the dried cured felt to blow off the broken fiber debris on the surface. Rinse each surface for 3 times, then soak, then use an oven to dry after soaking, and cool after drying to obtain a cleaned solidified felt. The soaking time in the step 1 is 30 minutes, and it is carried out at room temperature. Soaking, the drying time in the step 1 is 15 minutes, and the drying temperature is 70 degrees Celsius;

[0039] Step 2: Prepare the coating material

[0040] Stir and mix silicon carbide, graphite powder, curing agent, silicone resin, and organic solvent through a reaction kettle, mix evenly to obtain a coating material, then pour it into a container...

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Abstract

The invention discloses a method for prolonging the service life of a cured felt. The method comprises the following steps of cured felt pretreatment, coating material preparation, coating material spraying and secondary coating spraying. The coating material is sprayed to the surface of the cured felt, so that the situations that silicon steam corrodes the interior of the cured felt, and broken fibers of the cured felt fly outwards are avoided. Moreover, the coating material is used in a secondary spraying manner, so that the coating material has good adhesive force with the cured felt, the coating material does not fall off under the condition of circulating temperature rise, the service life of the cured felt is effectively prolonged, and meanwhile, the cleaning manner of multiple times of soaking and high-pressure gas washing is adopted, dust and fiber scraps on the cured felt are effectively removed, so that the surface of the cured felt can be in better contact with a coating material.

Description

technical field [0001] The invention relates to the technical field of curing felts, in particular to a method for prolonging the service life of curing felts. Background technique [0002] Cured felt is made of PAN-based carbon felt or graphite felt as the base material, and is prepared by bonding, curing, shaping, carbonization, high-temperature treatment and other processes. It is also called cured carbon felt. The cured felt after the above processing has good Excellent shape retention, self-supporting, small specific gravity, no short fiber shedding, high surface finish, low thermal conductivity, high temperature resistance, good thermal shock resistance (no cracking or deformation for long-term use), long service life, and easy installation It can be replaced and used at temperatures up to 3000°C. It is an ideal new thermal insulation material for high-temperature vacuum equipment and non-oxidizing atmosphere high-temperature equipment; [0003] Curing felt is suitabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/12D06G1/00D06B3/10D06B3/00
CPCD06N3/12D06G1/00D06B3/10D06N3/0063D06N3/009D06N3/0077D06N2213/03D06N2209/1664D06N2209/14
Inventor 付明全宋杰徐志群孙彬
Owner 青海高景太阳能科技有限公司
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