Acetylene benzene azo biphenyl phenolic resin/epoxy modified silicone resin ablation-resistant protection coating and preparation method thereof

A technology of acetylene benzene azobiphenol phenolic resin and epoxy modification, which is applied in the field of ablation-resistant protective coating, can solve the problems of non-ablation resistance, complicated preparation process, poor mechanical properties, etc., and achieve good corrosion resistance , Excellent comprehensive mechanical properties, and the effect of improving ablation resistance

Inactive Publication Date: 2017-09-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the shortcomings of the ablation-resistant protective coating in the prior art, such as not being ablation-resistant, poor mechanical properties, and complicated preparation processes, the purpose of the present invention is to provide an ablation-resistant protective coating with excellent ablation resistance and good heat insulation effect. Heat-resistant coating to meet the requirements for the surface of aerospace vehicles

Method used

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  • Acetylene benzene azo biphenyl phenolic resin/epoxy modified silicone resin ablation-resistant protection coating and preparation method thereof
  • Acetylene benzene azo biphenyl phenolic resin/epoxy modified silicone resin ablation-resistant protection coating and preparation method thereof
  • Acetylene benzene azo biphenyl phenolic resin/epoxy modified silicone resin ablation-resistant protection coating and preparation method thereof

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Embodiment 1

[0030] The preparation method of the ablation-resistant and heat-resistant coating is as follows: take 1g of EPABN resin according to the above mass fraction and dissolve it in 6g of dimethylformamide solvent, and after completely dissolving, add 10g of epoxy modified resin with a solid content of 50%. In the silicone resin solution, mix evenly to obtain a mixed adhesive, weigh 1.25g of talc powder, 1.25g of mica powder, 1g of aluminum hydroxide, 1g of antimony trioxide, and 0.5g of mica iron oxide and add it to the mixed adhesive Put it in a mixer and stir it for one hour, then pour it into a ball mill and grind it for 4 hours to make the pigments and fillers fully refined and mixed evenly, so that the fineness of the paint is less than 40 μm. Add to the above coating and stir evenly, then filter through a standard inspection sieve (230 holes, side length 0.064mm), then add 0.05g of coupling agent and 0.05g of leveling agent to obtain epoxy silicone resin coating. The prepare...

Embodiment 2

[0035] The preparation method of the ablation-resistant and heat-resistant coating is as follows: take 2g of EPABN resin according to the above mass fraction and dissolve it in 5g of dimethylformamide solvent, and after completely dissolving, add 10g of epoxy modified resin with a solid content of 50%. In the silicone resin solution, after mixing evenly to obtain a mixed adhesive, weigh 1.25g of talc powder, 1.25g of mica powder, 1g of aluminum hydroxide, 1g of antimony trioxide, and 0.5g of mica iron oxide and add them to the mixed adhesive Put it in a mixer and stir it for one hour, then pour it into a ball mill and grind it for 4 hours to make the pigments and fillers fully refined and mixed evenly, so that the fineness of the paint is less than 40 μm. Add to the above coating and stir evenly, then filter through a standard inspection sieve (230 holes, side length 0.064mm), then add 0.05g of coupling agent and 0.05g of leveling agent to obtain epoxy silicone resin coating. ...

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Abstract

The invention discloses an acetylene benzene azo biphenyl phenolic resin / epoxy modified silicone resin ablation-resistant protection coating and a preparation method thereof. Acetylene benzene azo biphenyl phenolic resins, epoxy modified silicone resins, fillers and the like are cured in a heating manner to obtain the protection coating. The preparation method of the coating includes the steps: dissolving the acetylene benzene azo biphenyl phenolic resins and the epoxy modified silicone resins in dimethyl formamide and / or acetone to uniformly stir; adding fillers; performing ball-milling, crushing and sieving; uniformly stirring obtained powder and additives; adjusting viscosity of mixture by the aid of dimethylbenzene, and coating and brushing surfaces of the substrates; performing heating and curing to obtain the protection coating. The ablation-resistant protection coating has the advantages that the coating is good in short-time ablation-resistant effect, excellent in mechanical property, simple in preparation process and suitable for surfaces with large areas and complicated structure, the protection coating can be used for spacecraft surface and has a good application prospect in ablation-resistant and heat-proof field, and direct damage of high-temperature air flow to substrate materials is prevented.

Description

technical field [0001] The invention relates to an ablation-resistant protective coating, in particular to an ablation-resistant protective coating of acetylene benzene azo biphenyl phenolic resin / epoxy modified silicone resin and a preparation method thereof. The ablation-resistant protective coating It can be used on the surface of aircraft to prevent direct damage of high-temperature heat flow to base material, and protect the base material from being scoured by high-temperature air flow, and belongs to the technical field of surface engineering. Background technique [0002] When a space vehicle (missile, rocket, spacecraft, etc.) rushes out of the atmosphere at hypersonic speed and returns to the ground, it will be subjected to atmospheric stagnation and friction, which will cause serious aerodynamic heating on the surface, and its surface temperature will be as high as thousands of degrees; in this In the temperature range, the mechanical properties of high-strength me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D161/14C09D5/08C09D7/12
Inventor 李芝华段芳芳
Owner CENT SOUTH UNIV
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