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Preparing method for carbon-fiber heat insulating material coated with oxidation-resistant and impact-resistant coating

A technology of anti-oxidation coatings and thermal insulation materials, which is applied in the field of carbon fiber material surface treatment, and can solve the problems of easy oxidation and burning, weak oxidation resistance, and high cost

Active Publication Date: 2019-05-31
山东众途复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, carbon fiber insulation materials generally have defects such as weak oxidation resistance, serious dust generation, poor impact resistance, and short service life; weak oxidation resistance, easy to oxidize and burn, resulting in excessive consumption of carbon fiber insulation materials, frequent Replacement, resulting in high cost; serious dust generation, resulting in impurities mixed in the crystal, affecting the quality of the crystal and a series of problems

Method used

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  • Preparing method for carbon-fiber heat insulating material coated with oxidation-resistant and impact-resistant coating
  • Preparing method for carbon-fiber heat insulating material coated with oxidation-resistant and impact-resistant coating
  • Preparing method for carbon-fiber heat insulating material coated with oxidation-resistant and impact-resistant coating

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preparation example Construction

[0039] The application provides a method for preparing a carbon fiber thermal insulation material coated with an anti-oxidation and impact-resistant coating, comprising the following steps in sequence:

[0040] 1) Primer spraying: take the carbon fiber thermal insulation material matrix, spray phenolic resin on the surface of the carbon fiber thermal insulation material matrix close to the heat source, and obtain the intermediate product A after the spraying is completed;

[0041] 2) drying the intermediate product A obtained in step 1) at a temperature of 115° C. to 125° C., and obtaining an intermediate product B after drying;

[0042] 3) Modified spraying: spray coupling agent on the surface of the phenolic resin coating of intermediate product B obtained in step 2), and obtain intermediate product C after spraying is completed;

[0043] 4) drying the intermediate product C obtained in step 3) at a temperature of 115° C. to 125° C., and obtaining an intermediate product D a...

Embodiment 1

[0073] A preparation method of a carbon fiber thermal insulation material coated with an anti-oxidation and impact-resistant coating, comprising the following steps in sequence:

[0074] 1) Primer spraying: take PAN-based carbon fiber thermal insulation felt, spray phenolic resin on the surface of the PAN-based carbon fiber thermal insulation felt close to the heat source, and obtain intermediate product A after spraying;

[0075] Step 1) in, the spray amount of phenolic resin is 200g / m 2 ;

[0076] 2) drying the intermediate product A obtained in step 1) in an oven at a temperature of 120° C. for 1 hour, and obtaining intermediate product B after drying;

[0077] 3) Modified spraying: spray coupling agent on the surface of the phenolic resin coating of intermediate product B obtained in step 2), and obtain intermediate product C after spraying is completed;

[0078] Step 3) in, the spray amount of coupling agent is 100g / m 2 ;

[0079] 4) drying the intermediate product C ...

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Abstract

The invention provides a preparing method for a carbon-fiber heat insulating material coated with an oxidation-resistant and impact-resistant coating. The preparing method includes the steps that bottoming spraying of phenolic resin, drying treatment, modifying and spraying of a coupling agent, drying treatment, oxidation-resistant spraying of an oxidation-resistant coating, drying treatment, vacuum sintering treatment and natural cooling are sequentially conducted; carbon fiber yarn is closed and wrapped with the oxidation-resistant and impact-resistant coating, the carbon fiber yarn is isolated from oxygen, it is avoided that the carbon fiber yarn is in contact with the oxygen, and therefore the oxygen resistance is improved; a main raw material of the oxidation-resistant and impact-resistant coating is phenolic resin, the phenolic resin is cured, then the hardness of the surface of the carbon-fiber heat insulating material can be improved, the surface harness cannot be obviously reduced after high-temperature vacuum sintering treatment, and therefore the impact resistance is enhanced; finally, the service life of the carbon-fiber heat insulating material is increased by 50% or above; holes in the surface of the carbon-fiber heat insulating material are sealed with the oxidation-resistant and impact-resistant coating, and therefore the dust generation amount of the carbon-fiber heat insulating material is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of carbon fiber material surface treatment, in particular to a preparation method of a carbon fiber thermal insulation material coated with an anti-oxidation and impact-resistant coating. Background technique [0002] Carbon fiber insulation materials (such as carbon fiber insulation felt) have excellent properties such as small thermal conductivity, low heat capacity, small linear expansion coefficient, constant mechanical strength at high temperatures, corrosion resistance, and lightweight, and are widely used in high-temperature vacuum furnaces or inert atmosphere furnaces. . Especially in recent years, it has also shown good application prospects in high-end technology fields such as semiconductors, sapphires, optical fibers, and LEDs. However, carbon fiber insulation materials generally have defects such as weak oxidation resistance, serious dust generation, poor impact resistance, and short service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/52
Inventor 徐滨
Owner 山东众途复合材料有限公司