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Light anti-infrared radiation ablation-resistant composite material added with opacifying agent and preparation method thereof

A composite material and opacifying agent technology, which is applied in the field of preparation of ablation-resistant composite materials, can solve the problems of high density, large ablation amount, uneven ablation, etc., and achieve low density, improved oxidation resistance, and good oxidation resistance Effect

Pending Publication Date: 2021-05-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of large ablation volume, uneven ablation and high density in existing ablation-resistant composite materials, and to provide an infrared radiation-resistant light-weight ablation-resistant composite material and its preparation method

Method used

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  • Light anti-infrared radiation ablation-resistant composite material added with opacifying agent and preparation method thereof
  • Light anti-infrared radiation ablation-resistant composite material added with opacifying agent and preparation method thereof
  • Light anti-infrared radiation ablation-resistant composite material added with opacifying agent and preparation method thereof

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Effect test

Embodiment 1

[0036] Example 1: A light-weight, anti-infrared, ablation-resistant composite material that adds a sunscreen in this example consists of a fiber braid and TiO2 filled in the fiber braid. 2 Composed of ceramics, SiOC and phenolic resin, the mass fraction of fiber braids in the composite material is 30%, TiO 2 The mass fraction of ceramics is 6%, the mass fraction of SiOC is 6%, the mass fraction of phenolic resin is 58%, and the density of the composite material is 0.5g / cm 3 ; Wherein the fiber braid is a carbon fiber braid, the carbon fiber is polyacrylonitrile-based carbon fiber, the structure of the fiber braid is a continuous carbon fiber needle-punched structure, and the fiber braid is any layering method, and its density 0.15g / cm 3 , the diameter of single filament is 6μm~7μm, and the needling density is 17 needles / cm 2 , the thickness is 20mm, the length is 200mm, and the width is 200mm.

[0037] The method for preparing a kind of anti-infrared radiation light-weight ...

Embodiment 2

[0046] Embodiment 2: A light-weight and ablation-resistant composite material with anti-infrared radiation and added opacifying agent in this embodiment consists of a fiber braid and TiO2 filled in the fiber braid. 2 Composed of ceramics, SiOC and phenolic resin, the mass fraction of the fiber braid in the composite material is 40%, TiO 2 The mass fraction of ceramics is 9%, the mass fraction of SiOC is 9%, the mass fraction of phenolic resin is 42%, and the density of the composite material is 0.5g / cm 3 ; Wherein the fiber braid is a carbon fiber braid, the carbon fiber is polyacrylonitrile-based carbon fiber, the structure of the fiber braid is a continuous carbon fiber needle-punched structure, and the fiber braid is any layering method, and its density 0.20g / cm 3 , the diameter of single filament is 6μm~7μm, and the needling density is 19 needles / cm 2 , the thickness is 23mm, the length is 200mm, and the width is 200mm.

[0047] The method for preparing a light-weight a...

Embodiment 3

[0055] Embodiment 3: A light-weight and ablation-resistant composite material with anti-infrared radiation and added opacifying agent in this embodiment consists of a fiber braid and TiO2 filled in the fiber braid. 2 Composed of ceramics, SiOC and phenolic resin, the mass fraction of the fiber braid in the composite material is 50%, TiO 2 The mass fraction of ceramics is 4%, the mass fraction of SiOC is 5%, the mass fraction of phenolic resin is 41%, and the density of described composite material is 0.3g / cm 3 ; Wherein the fiber braid is a carbon fiber braid, the carbon fiber is polyacrylonitrile-based carbon fiber, the structure of the fiber braid is a continuous carbon fiber needle-punched structure, and the fiber braid is any layering method, and its density 0.15g / cm 3 , the single filament diameter is 6μm~7μm, the needling density is 18 needles / cm 2 , the thickness is 20mm, the length is 200mm, and the width is 200mm.

[0056] A method for preparing an infrared radiati...

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Abstract

The invention relates to a light anti-infrared radiation lightweight ablation-resistant composite material added with an opacifier and a preparation method thereof. The invention belongs to the field of preparation of ablation-resistant composite materials. The invention aims to solve the technical problems of large ablation amount, non-uniform ablation and large density of the existing ablation-resistant composite material. The invention discloses the light anti-infrared radiationablation-resistant composite material added with an opacifier. The composite material is composed of a fiber woven body, and TiO2 ceramic, SiOC and phenolic resin which are filled in the fiber woven body. The method comprises the following steps: step 1, preparing a TiO2-containing woven body; step 2, preparing a weaving body containing SiOC; step 3, preparing the light ablation-resistant woven body; and 4, performing solvent replacement and drying. The density of the prepared composite material is 0.30-0.90 g / cm<3>, the room-temperature heat conductivity is 0.093-0.230 W / m.K, the longitudinal tensile strength is 3.59-5.38 MPa, and the longitudinal compression strength is 1.48-11.02 MPa. In a graphite plate radiation heating examination test, the composite material shows non (micro) ablation and good heat insulation and appearance retention capabilities.

Description

technical field [0001] The invention belongs to the field of preparation of ablation-resistant composite materials, and in particular relates to an infrared radiation-resistant lightweight ablation-resistant composite material added with a sunscreen and a preparation method thereof. Background technique [0002] With the development of the country's aerospace industry, higher requirements are put forward for the thermal protection materials of aircraft. Ablation materials are the main material category. Carbon fiber has excellent specific strength, specific stiffness, and specific modulus, and has important application prospects in the aerospace field. In recent years, domestic and foreign experts have conducted in-depth research. The addition of the functional phase of the opacifying agent can make the composite material not only have the ability to resist heat radiation at high temperature, but also have the function of resisting oxidation and blocking the inward propagati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/83C04B35/46C04B35/524C04B35/56C04B35/624C04B35/66
CPCC04B35/80C04B35/83C04B35/624C04B35/66C04B35/46C04B35/5603C04B35/524C04B2235/5248C04B2235/616C04B2235/96C04B2235/9607C04B2235/77
Inventor 洪长青张幸红潘羿吾金翔宇王赫兵李春来杜善义
Owner HARBIN INST OF TECH
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