High temperature and high radiation resistant powder, its preparation, coating slurry containing it, coating and application

A high-radiation coating and high-temperature-resistant technology, which is applied in the coating protection field of high-temperature structural materials, can solve problems such as difficult implementation, incompatibility of ceramic matrix composite materials, and complicated preparation process of high-radiation coatings, and achieve bond strength Effect of high, low temperature, high radiation coefficient in high temperature environment

Active Publication Date: 2021-11-30
BEIJING INST OF ELECTRONICS SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defects that the existing high-radiation coatings are complicated to prepare, difficult to implement, and incompatible with existing ceramic matrix composite materials, an object of the present invention is to provide a high-temperature-resistant and high-radiation powder

Method used

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  • High temperature and high radiation resistant powder, its preparation, coating slurry containing it, coating and application
  • High temperature and high radiation resistant powder, its preparation, coating slurry containing it, coating and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) SiC, MoSi 2 , SiO 2 , ZrB 2 The powder is mixed according to the mass percentage of 10%, 20%, 60%, and 10%, and ground in a ball mill for 2 hours; the powder is taken out and sieved to obtain a high-temperature and high-radiation-resistant powder with a particle size of about 200 mesh;

[0051] (2) Mix the powder prepared in the above steps with absolute alcohol in a mass ratio of 1:1, place in a stirring container, and stir for 20 minutes to obtain a mixed slurry;

[0052] (3) Mix the dispersed mixed slurry with the liquid polycarbosilane (PCS) polymer in a mass ratio of 2:1.5, and stir the mixture evenly with a stirrer;

[0053](4) Mix the slurry uniformly stirred in step (3) with the novolac epoxy resin (F51) in a mass ratio of 1:1, and mix evenly with a stirrer to prepare a high temperature resistant high radiation coating slurry;

[0054] (5) Coating the above-mentioned coating slurry on the surface of the C / SiC composite material by spraying, and the coatin...

Embodiment 2

[0059] (1) SiC, MoSi 2 , SiO 2 , ZrB 2 The powder is mixed according to the mass percentage of 15%, 20%, 45%, and 20%, and ground in a ball mill for 3 hours; the powder is taken out, and after sieving, a high-temperature and high-radiation-resistant powder with a particle size of about 300 meshes is obtained;

[0060] (2) Mix the powder prepared in the above steps with absolute alcohol in a mass ratio of 1:0.7, place in a stirring container, and stir for 20 minutes to obtain a mixed slurry;

[0061] (3) Mix the dispersed mixed slurry with the liquid polycarbosilane (PCS) polymer in a mass ratio of 1:1.5, and stir the mixture evenly with a stirrer;

[0062] (4) Mix the uniformly stirred slurry in step (3) with the novolak epoxy resin (F-51) at a mass ratio of 1:1.5, and mix evenly with a stirrer to prepare a high temperature resistant high radiation coating slurry ;

[0063] (5) Apply the above-mentioned coating slurry on the surface of the C / SiC composite material by spray...

Embodiment 3

[0068] (1) SiC, MoSi 2 , SiO 2 , ZrB 2 The powders were mixed in proportions of 5%, 25%, 25%, and 45% by mass, and were ground in a ball mill for 3.5 hours. Take out the powder and sieve to obtain a high temperature and high radiation powder with a particle size of about 400 mesh;

[0069] (2) Mix the powder prepared in the above steps with absolute alcohol at a ratio of 1:2, place in a stirring container, and stir for 40 minutes.

[0070] (3) Mix the dispersed mixed slurry with the liquid polycarbosilane (PCS) polymer, the mass ratio is 1:2.5, and stir the mixture evenly with a stirrer;

[0071] (4) Mix the uniformly stirred slurry in step (3) with the novolak epoxy resin (F-51) at a mass ratio of 1:2, and mix evenly with a stirrer to prepare a high temperature resistant high radiation coating slurry ;

[0072] (5) Apply the above-mentioned coating slurry on the surface of the C / SiC composite material by spraying, and the coating thickness is controlled at 0.3mm;

[007...

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Abstract

The invention discloses a high-temperature and high-radiation resistant powder, which comprises the following raw materials in mass percentage: SiC5-30%, MoSi 2 20‑45%, SiO 2 15‑60%, ZrB 2 10‑45% The powder has high temperature and high radiation characteristics. The invention also discloses the preparation of the powder, the coating slurry containing the powder, the preparation of the coating slurry, the coating and the application of the coating. When the coating is applied to the protection of ceramic matrix composites, the coating has high bonding strength with the matrix of ceramic matrix composites, high radiation coefficient in high temperature environment, good anti-oxidation and self-healing ability, and has anti-corrosion properties for ceramic matrix composites. Oxidation, the function of reducing the temperature of the material body.

Description

technical field [0001] The invention relates to the field of coating protection for high temperature structural materials. More specifically, it relates to a high temperature and high radiation resistant powder, its preparation, coating slurry containing it, coating and application. Background technique [0002] With the development of high-performance hypersonic weapons and equipment, conventional anti-missile defense systems have been unable to meet the development needs of new equipment technologies. Because the laser anti-missile system has the advantages of low cost, high precision, fast conversion speed, and high efficiency, it has become a strategic defense method for the priority development of various countries, and some developed countries have already approached or completed actual combat deployment. When a laser weapon hits a target, it mainly uses thermal effects to damage the target. Therefore, the protection against laser damage becomes the key to the effect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/622C04B35/626C04B35/66C04B41/87
CPCC04B35/14C04B35/62222C04B35/626C04B35/66C04B41/009C04B41/5071C04B41/87C04B2235/3813C04B2235/3826C04B2235/3891C04B35/806C04B41/5059C04B41/507
Inventor 辛玲陈纲李君龙
Owner BEIJING INST OF ELECTRONICS SYST ENG
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