Unlock instant, AI-driven research and patent intelligence for your innovation.

Ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material and preparation method thereof

A technology of ceramic microspheres and composite materials, which is applied in the field of ceramic microsphere-modified carbon fiber preform reinforced silicon oxycarbon-phenolic composite materials and its preparation, can solve the problems of poor oxidation resistance and ablation resistance, and achieve stable and excellent performance. Excellent results in mechanical properties, ablation resistance and thermal stability

Active Publication Date: 2021-06-11
HARBIN INST OF TECH
View PDF6 Cites 2 Cited by
  • 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 problem of poor anti-oxidation and ablation resistance of existing lightweight ablative composite materials, and to provide a ceramic microsphere improved Carbon fiber prefabricated body reinforced silicon oxygen carbon-phenolic composite material and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material and preparation method thereof
  • Ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material and preparation method thereof
  • Ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: A kind of ceramic microsphere modified carbon fiber prefabricated body reinforced silicon oxygen carbon-phenolic composite material of this embodiment is made of ceramic microsphere modified carbon fiber prefabricated body and silicon oxide filled in the ceramic microsphere modified carbon fiber prefabricated body Composed of carbon gel and phenolic airgel, the density of the ceramic microsphere modified carbon fiber preform in the composite material is 0.2g / cm 3 , the total density of silicon oxygen carbon gel and phenolic airgel in the composite material is 0.14g / cm 3, wherein the mass ratio of silica carbon gel to phenolic aerogel is 1:6; the density of the ceramic microsphere modified carbon fiber preform reinforced silica carbon-phenolic composite material is 0.34g / cm 3 ;

[0037] The ceramic microsphere modified carbon fiber prefabricated body is obtained through the following steps: ① mixing phenolic resin and ethanol, stirring mechanically for 15 ...

Embodiment 2

[0049] Embodiment 2: the difference between this embodiment and embodiment 1 is: the density of the ceramic microsphere modified carbon fiber preform used for preparing the composite material is 0.5g / cm 3 , where the density of ceramic microspheres is 0.04g / cm 3 . Others are the same as in Example 1.

[0050] The density of the ceramic microsphere modified carbon fiber preform reinforced silicon oxygen carbon-phenolic composite material obtained in this example is 0.60g / cm 3 , the thermal conductivity is 0.10W / (mK), and the thermal conductivity testing standard is GB / T 10295-2008.

Embodiment 3

[0051] Embodiment 3: the difference between this embodiment and embodiment 1 is: the density of the ceramic microsphere modified carbon fiber preform used for preparing the composite material is 0.2g / cm 3 , where the density of ceramic microspheres is 0.08g / cm 3 . Others are the same as in Example 1.

[0052] The density of the ceramic microsphere modified carbon fiber prefabricated body reinforced silicon oxygen carbon-phenolic composite material obtained in this embodiment is 0.32g / cm 3 , the thermal conductivity is 0.09W / (mK), and the compressive strength is 3.2MPa. The thermal conductivity testing standard is GB / T10295-2008, and the compressive strength testing standard is GB / T 1448-2005.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material 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 problem of poor oxidation resistance and ablation resistance of existing light ablation composite materials. The ceramic microsphere-modified carbon fiber preform-reinforced silica carbon-phenolic aldehyde composite material is composed of a ceramic microsphere modified carbon fiber preform, silica carbon gel and phenolic aldehyde aerogel, wherein the ceramic microsphere-modified carbon fiber preform is filled with the silica carbon gel and the phenolic aldehyde aerogel. The preparation method comprises the following steps: 1, designing and preparing the ceramic microsphere-modified carbon fiber preform; 2, preparing silica carbon sol; 3, carrying out vacuum impregnation on the silica carbon sol, and carrying out curing and drying; 4, preparing phenolic sol; 5, pouring the impregnated phenolic sol under vacuum and conducting curing; and 6, conducting solvent replacement and drying. The composite material disclosed by the invention is controllable in macro-microstructure, adjustable in density in a range of 0.27-0.90 g / cm<3>, good in mechanical properties and thermal shock resistance, and excellent in thermal stability and ablation resistance.

Description

technical field [0001] The invention belongs to the field of preparation of ablation-resistant composite materials, and in particular relates to a ceramic microsphere modified carbon fiber prefabricated body reinforced silicon oxygen carbon-phenolic composite material and a preparation method thereof. Background technique [0002] The traditional lightweight carbon / phenolic ablation composite material has the characteristics of low density, high temperature resistance, low thermal conductivity and high thermal blocking. It has uniform ablation and small retreat in high temperature environment, and can maintain the ablation shape well during service. It better solves the heat protection in the high heat flow, high stagnation point pressure and short-term extremely harsh environment of spacecraft such as returnable satellites and spacecraft. However, traditional lightweight carbon / phenolic ablation composites use chopped carbon fiber prefabricated body as a reinforcing phase, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K7/28C08K7/06
CPCC08K7/28C08K7/06C08K2201/005C08L61/06
Inventor 洪长青张幸红金翔宇潘羿吾王赫兵徐建国杜善义
Owner HARBIN INST OF TECH