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Anti-oxidant coating layer capable of improving bonding performance with CfZr-B

A technology of anti-oxidation coating and bonding performance, which is applied in the field of carbon fiber reinforced ceramic matrix composites, which can solve the problems of high temperature decomposition of the interface and weakening of the bonding force between the interfaces.

Inactive Publication Date: 2019-06-18
孙志勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a kind of can effectively improve and C f An anti-oxidation coating with bonding performance between Zr-B, aiming to solve the problem of C f The anti-oxidation coating on the surface of the / Zr-B composite material is prone to technical problems such as interfacial pyrolysis or generation of unnecessary new interfacial phases due to the weakening of the bonding force between the interfaces in a high-temperature environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The anti-oxidation coating includes the following raw materials: 40g of silicon powder with an average particle size of ≤50um, 8g of carbon fiber powder with an average particle size of ≤50um, 5g of glass powder, 50mL of absolute ethanol, 1mL of water glass (ρ is 2.33g / mL), 0.5 g soybean lecithin, 6gE03 brand bisphenol A epoxy resin, 20mL methyl ethyl ketone (ρ is 0.805g / cm 3 ), 3mL isophoronediamine (ρ is 0.924g / cm 3 );

[0031] Among them, the glass powder is composed of 1g of SnO with an average particle size ≤ 100nm 2 , 2g of B with an average particle size ≤ 100nm 2 o 3 , 2g of SiO with an average particle size ≤ 100nm 2 composition;

[0032] The preparation method of above-mentioned anti-oxidation coating comprises the following steps:

[0033] S1. Weigh 40g of silicon powder with an average particle size of ≤50um and 8g of carbon fiber powder with an average particle size of ≤50um, and set aside;

[0034] S2. The spare raw materials in step S1 and 10 mL of...

Embodiment 2

[0042] The anti-oxidation coating includes the following raw materials: 30g of silicon powder with an average particle size of ≤50um, 9g of carbon fiber powder with an average particle size of ≤50um, 5g of glass powder, 50mL of absolute ethanol, 1mL of water glass, 0.5g of soybean lecithin, 6g of E03 brand Phenol A type epoxy resin, 20mL methyl ethyl ketone, 3mL isophorone diamine;

[0043] Among them, the glass powder is composed of 1g of SnO with an average particle size ≤ 100nm 2 , 2g of B with an average particle size ≤ 100nm 2 o 3 , 2g of SiO with an average particle size ≤ 100nm 2 composition;

[0044] The preparation method of above-mentioned anti-oxidation coating comprises the following steps:

[0045] S1. Weigh 30g of silicon powder with an average particle size of ≤50um and 9g of carbon fiber powder with an average particle size of ≤50um, and set aside;

[0046] S2. The spare raw materials in step S1 and 10 mL of absolute ethanol were ball milled at 320 r / min f...

Embodiment 3

[0054] The anti-oxidation coating includes the following raw materials: 50g of silicon powder with an average particle size of ≤50um, 7g of carbon fiber powder with an average particle size of ≤50um, 5g of glass powder, 50mL of absolute ethanol, 1mL of water glass, 0.5g of soybean lecithin, 6g of E03 brand Phenol A type epoxy resin, 20mL methyl ethyl ketone, 3mL isophorone diamine;

[0055] Among them, the glass powder is composed of 1g of SnO with an average particle size ≤ 100nm 2 , 2g of B with an average particle size ≤ 100nm 2 o 3 , 2g of SiO with an average particle size ≤ 100nm 2 composition;

[0056] The preparation method of above-mentioned anti-oxidation coating comprises the following steps:

[0057] S1. Weigh 50g of silicon powder with an average particle size of ≤50um and 7g of carbon fiber powder with an average particle size of ≤50um, and set aside;

[0058] S2. The spare raw materials in step S1 and 10 mL of absolute ethanol were ball milled at 280 r / min f...

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Abstract

The invention belongs to the technical field of carbon fiber reinforced ceramic-based composite materials, and discloses an anti-oxidant coating layer capable of improving bonding performance with CfZr-B. The anti-oxidant coating layer capable of improving bonding performance with CfZr-B comprises, by weight, 30 to 50 parts of silicon powder, 7 to 9 parts of carbon fiber powder, 5g of glass powder, 2.33 parts of sodium silicate, 0.5 part of soya lecithin, 6 parts of bisphenol A type epoxy resin, and 2.77 parts of isophorone diamine. The anti-oxidant coating layer on a CfZr-B composite materialsurface is capable of solving problems in the prior art that at high temperature environment, because of reduction of interface bonding acting force, interface pyrolysis or generation of undesired new interfaces is easily caused.

Description

technical field [0001] The invention relates to the technical field of carbon fiber reinforced ceramic matrix composite materials, in particular to a f Anti-oxidation coatings with binding properties between Zr-B. Background technique [0002] Carbon fiber reinforced ceramic matrix composites have good mechanical and thermal properties at high temperatures. Under inert conditions, they still maintain mechanical properties such as strength and modulus in an environment exceeding 2000 ° C, and have low thermal expansion coefficients and high thermal conductivity. , high gasification temperature, and good thermal shock resistance, so it has broad application prospects in aerospace vehicle thermal protection systems. [0003] Among them, carbon fiber reinforced zirconium boride ceramic matrix (C f / Zr-B) composite material is carbon fiber reinforced silicon carbide ceramic matrix (C f / Si-O-C) composite material with better performance of carbon fiber reinforced ceramic matri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 不公告发明人
Owner 孙志勤