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Ultra-light heat-insulating and scouring-resistant functional integrated composite material and preparation method thereof

A technology of composite materials and ceramic composite materials, which is applied in the field of development of lightweight special materials, can solve the problems of light weight and limited high temperature resistance, and achieve the effects of avoiding hidden dangers in performance, realizing light weight and simplifying structure

Active Publication Date: 2021-08-13
湖南合为新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technology, due to the obvious distinction of material functional layers and the introduction of beryllium copper and aramid fiber tows in the preparation process, its light weight and high temperature resistance are limited.

Method used

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  • Ultra-light heat-insulating and scouring-resistant functional integrated composite material and preparation method thereof
  • Ultra-light heat-insulating and scouring-resistant functional integrated composite material and preparation method thereof
  • Ultra-light heat-insulating and scouring-resistant functional integrated composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A light-weight heat-insulating and erosion-resistant integrated composite material based on high-temperature wave absorption, the preparation process of which is as follows:

[0072] 1) Preparation of the outer layer of the heat-resistant structure with high temperature resistance and erosion resistance:

[0073] Prepare fiber-reinforced ceramic matrix composites according to requirements; the alumina preform is continuous alumina fiber cloth, and the alumina cloth is satin cloth (its density is 0.9g / cm 3 ), with a thickness of 0.61mm.

[0074] The preparation of the matrix adopts the slurry impregnation sintering method, and the ceramic slurry is impregnated with Y 2 o 3 , ZrO 2 , SiO 2 、Al 2 o 3 、TiO 2 According to the mixture with a mass ratio of 1:1:1:1:1, the particle size of the ceramic powder is 0.5 microns.

[0075] The thickness of the outer layer of the heat-resistant structure with high temperature resistance and erosion resistance is 0.65mm. Its den...

Embodiment 2

[0094] Other conditions are consistent with embodiment 1; The difference is:

[0095] 3) Preparation of high temperature adhesive

[0096] The high-temperature adhesive is prepared by mixing and stirring polyazane-silicon precursor, titanium alloy powder, silicon carbide powder, and dispersant at a mass ratio of 35:30:30:5. Wherein the particle size of the titanium alloy powder and the silicon carbide powder is 1 to 2 microns; the dispersant is an acrylic resin;

[0097] The properties of the obtained materials are shown in Table 2.

Embodiment 3

[0099] Other conditions are consistent with embodiment 1; The difference is:

[0100] 3) Preparation of high temperature adhesive

[0101] The high-temperature adhesive is prepared by mixing and stirring polyazane-silicon precursor, titanium alloy powder, silicon carbide powder, and dispersant in a mass ratio of 80:15:4.5:0.5. Wherein the particle size of the titanium alloy powder and the silicon carbide powder is 1 to 2 microns; the dispersant is an acrylic resin;

[0102] The properties of the obtained materials are shown in Table 3.

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Abstract

The invention relates to an ultra-light heat-insulation scouring-resistant functional integrated composite material and a preparation method thereof, and belongs to the technical field of light special material development. The composite material comprises a high-temperature-resistant and anti-scouring ceramic composite material layer, a bonding layer and a high-temperature wave-absorbing and heat-insulating layer, the bonding layer is positioned between the high-temperature-resistant and anti-scouring ceramic composite material layer and the high-temperature wave-absorbing and heat-insulating layer, and is in direct contact with the two; and the bonding layer is formed by mixing a polysilazane precursor, titanium alloy powder, silicon carbide powder and a dispersing agent according to a specific proportion. The integrated composite material provided by the invention has the functions of high temperature resistance, high Mach number scouring resistance, ultra-light weight, high porosity, high-temperature wave absorption and heat insulation, and can meet the multifunctional integrated requirements of the aerospace field on high temperature resistance, heat insulation, high-temperature wave absorption, light weight and the like. The method is reasonable in step design, simple and controllable in process and convenient for large-scale industrial application.

Description

technical field [0001] The invention relates to an ultra-light heat-insulating and erosion-resistant functionally integrated composite material and a preparation method thereof; it belongs to the technical field of lightweight special material development. Background technique [0002] Lightweight multifunctional composite materials are currently a research hotspot, and they have broad application prospects in aerospace, missile, transportation and other fields. Save huge costs, and at the same time, "stealth" in military aerospace equipment has also become one of the key directions of current research. In the research of multifunctional composite materials, people have done a lot of research. For example, the research on aerospace multifunctional composite materials has entered from the initial dual-function (such as heat-resistant / nuclear-resistant) composite materials to three-functional (such as heat-resistant / wave-transparent / load-bearing, heat-resistant / nuclear-resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B17/02B32B7/12B32B37/12B32B37/06B32B37/10
CPCB32B5/02B32B7/12B32B9/005B32B9/047B32B37/06B32B37/10B32B37/12B32B2262/10B32B2262/101B32B2307/304B32B2307/306B32B2605/18
Inventor 阳海棠周科朝孙成名
Owner 湖南合为新材料科技有限公司
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