Carbon / phenolic heat insulating composite material and manufacturing process thereof

A composite material and phenolic technology, which is applied in the field of heat-resistant composite materials and their processing, can solve the problems of unfavorable heat-resistant materials, etc., and achieve the effects of excellent ablation performance, good heat insulation and good comprehensive performance

Active Publication Date: 2009-05-27
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon fiber heat-resistant composites have good ablation performance, the thermal conductivity of carbon fibers is much higher than that of silicon-based fibers, which makes the thermal conductivity of carbon-based composites significantly higher than that of silicon-based composites. Heat-resistant material is a disadvantage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The carbon / phenolic heat-resistant composite material of the present invention uses viscose-based carbon fiber chopped fiber yarn as a reinforcement, and 616 aminophenolic resin as a matrix, wherein the weight percentage of the 616 aminophenolic resin is 35%. The carbon content of the chopped fiber yarn of viscose-based carbon fiber is 96% by weight, the tensile strength is 0.90GPa, the content of alkali metal or alkaline earth metal is 50μg / g, the linear density is 190tex, and the twist is 100 twist / m , The chopped length is 36mm. 616 aminophenol-formaldehyde resin, with ethanol as solvent, is the polycondensation product of phenol and formaldehyde, and the residual carbon rate of the resin is 59%.

[0022] The manufacturing process of the above-mentioned carbon / phenolic heat-resistant composite material, it is carried out successively according to the following steps:

[0023] (1) at first the chopped fiber yarn of viscose-based carbon fiber is mixed with 616 aminoph...

Embodiment 2

[0027] The carbon / phenolic heat-resistant composite material of the present invention uses viscose-based carbon fiber woven fabric as reinforcement and high-purity phenolic resin as a matrix, wherein the weight percentage of high-purity phenolic resin is 30%. The woven fabric of viscose-based carbon fiber has a carbon content of 95% by weight, a tensile strength of 0.80GPa, an alkali metal or alkaline earth metal content of 60μg / g, a linear density of 170tex, and a twist of 30 twists / m , the thickness is 0.5mm, and the width is 1.0m. The high-purity phenolic resin uses ethanol as a solvent and is a polycondensation product of phenol and formaldehyde, and the residual carbon rate of the resin is greater than 55%.

[0028] The manufacturing process of the above-mentioned carbon / phenolic heat-resistant composite material, it is carried out successively according to the following steps:

[0029] (1) first the woven cloth of viscose base carbon fiber is immersed in the high-purity...

Embodiment 3

[0033] The carbon / phenolic heat-resistant composite material of the present invention uses viscose-based carbon fiber chopped fiber yarn as reinforcement and magnesium phenolic resin as matrix, wherein the weight percentage of magnesium phenolic resin is 32%. The carbon content of the chopped fiber yarn of viscose-based carbon fiber is 95% by weight, the tensile strength is 0.80GPa, the content of alkali metal or alkaline earth metal is 100μg / g, the linear density is 80tex, and the twist is 120 twist / m , The chopped length is 24mm. Magnesium phenolic resin, using methanol as a solvent, is a polycondensation product of phenol and formaldehyde, and the carbon residue rate of the resin is 55%.

[0034] The manufacturing process of the above-mentioned carbon / phenolic heat-resistant composite material, it is carried out successively according to the following steps:

[0035] (1) first the chopped fiber yarn of viscose-based carbon fiber is mixed with magnesium phenolic resin to ma...

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Abstract

The invention relates to a carbon / phenol-formaldehyde heat-insulating composite material and production technology thereof. The carbon / phenolic aldehyde heat-insulating composite material takes viscose glue based carbon fibers as reinforcements and phenol-formaldehyde resin as a substrate, wherein the weight percent of the phenol-formaldehyde resin is between 30 and 45 percent; the carbon content of the viscose glue based carbon fibers adopted is between 95 and 97 percent; the tensile strength is more than or equal to 0.80 GPa; and the content of alkali metals or alkaline-earth metals is less than or equal to 100 mu g / g. The composite material has the advantages of superior ablation property, good heat-insulating property and light weight, and meets the use requirements under the environmental condition of high status. The production technology for the carbon / phenolic aldehyde heat-insulating composite material adopts the mode of taking chopped fiber yarns or woven fabrics of the viscose glue based carbon fibers as the reinforcements, and forming by a die stamping technology or a winding technology. The composite material prepared by the technology has good comprehensive performance, is light and thin under the condition of the same heat-insulating effect, and has significance in the aspect of high-end application limited by weight and size.

Description

technical field [0001] The invention relates to a heat-resistant composite material and a processing method thereof, in particular to a carbon / phenolic heat-resistant composite material and a manufacturing process thereof. Background technique [0002] When an aerospace vehicle re-enters the atmosphere, there will be severe friction with the air, and the surface will withstand thousands of degrees of high temperature and high-speed airflow. In order to protect the aircraft from burning, it is necessary to protect the surface with a layer of special heat-resistant material. A similar situation also exists in the solid rocket motor. When the solid rocket motor is working, it will generate a high-temperature and high-speed gas flow containing particles, and its combustion chamber and nozzle diffusion section also need to be protected with heat-resistant materials. Heat-resistant materials are currently dominated by heat-resistant composite materials, and resin-based heat-resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/08C08K7/06C08J5/04B29C70/40B29C70/54B29C70/34D03D15/00D03D15/275
Inventor 匡松连尚龙蔡建强华小玲张宗强
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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