Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of C/C-SiC composite material with high thermal conductivity

A composite material and prefabricated technology, which is applied in the field of C/C-SiC composite material preparation, can solve the problems of C/C-SiC composite material components such as thermal gradient and thermal stress concentration aggravation, service reliability reduction, etc.

Active Publication Date: 2020-12-25
湖南东映碳材料科技有限公司
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the high-temperature service environment becomes more and more harsh, the thermal gradient and thermal stress concentration of C / C-SiC composite components increase, which leads to a decrease in service reliability.

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
  • Preparation method of C/C-SiC composite material with high thermal conductivity
  • Preparation method of C/C-SiC composite material with high thermal conductivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Firstly, the mesophase pitch-based carbon fiber was subjected to primary carbonization at 500° C., the strength of the mesophase pitch-based carbon fiber was adjusted to 0.30 GPa, and the modulus was adjusted to 8 GPa to obtain carbon fiber I. Then carbon fiber I was subjected to secondary carbonization at 1100° C. to adjust the modulus of the carbon fiber to 120 GPa and the strength to 1.12 GPa to obtain carbon fiber II. Then weave the upper carbon fiber II into three pieces of satin cloth; prepare the three-dimensional carbon fiber prefabricated body I by the method of fine weaving and puncturing, and use T700 carbon fiber in the Z direction to puncture the above-mentioned mesophase pitch-based carbon fiber carbon cloth. The prepared three-dimensional carbon fiber preform I contained 8 vol% of T700 carbon fibers in the Z direction, and 18 vol% of mesophase pitch-based carbon fibers in the X and Y directions.

[0077] Secondly, the three-dimensional carbon fiber prefor...

Embodiment 2

[0080] Firstly, the mesophase pitch-based carbon fiber was carbonized at 600°C for primary carbonization, the strength of the mesophase pitch-based carbon fiber was adjusted to 0.40 GPa, and the modulus was adjusted to 30 GPa to obtain carbon fiber I. Then carbon fiber I was subjected to secondary carbonization at 1500° C. to adjust the modulus of the carbon fiber to 200 GPa and the strength to 1.5 GPa to obtain carbon fiber II. Then weave the upper carbon fiber II into eight pieces of satin cloth; prepare the three-dimensional carbon fiber prefabricated body I by the method of fine weaving and puncturing, and use M40J carbon fiber to puncture the above-mentioned mesophase pitch-based carbon fiber carbon cloth in the Z direction. The content of M40J carbon fiber in the prepared three-dimensional carbon fiber preform I is 6 vol% in Z direction, and the content of mesophase pitch-based carbon fiber in X and Y directions is 20 vol%.

[0081] Secondly, the three-dimensional carbon...

Embodiment 3

[0084] Firstly, the mesophase pitch-based carbon fiber was subjected to primary carbonization at 700 °C, the strength of the mesophase pitch-based carbon fiber was adjusted to 0.45 GPa, and the modulus was adjusted to 50 GPa to obtain carbon fiber I. Then carbon fiber I was subjected to secondary carbonization at 1800° C. to adjust the modulus of the carbon fiber to 280 GPa and the strength to 1.8 GPa to obtain carbon fiber II. Then weave the upper carbon fiber II into five pieces of satin cloth; prepare the three-dimensional carbon fiber prefabricated body I by the method of fine weaving and puncturing, and use T800 carbon fiber in the Z direction to puncture the above-mentioned mesophase pitch-based carbon fiber carbon cloth. The prepared three-dimensional carbon fiber preform I contained 9 vol% of T800 carbon fibers in the Z direction, and 19 vol% of mesophase pitch-based carbon fibers in the X and Y directions.

[0085] Secondly, the three-dimensional carbon fiber preform ...

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
Modulusaaaaaaaaaa
Strengthaaaaaaaaaa
Strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a C / C-SiC composite material with high thermal conductivity, which comprises the following steps of: carrying out two-stage carbonization on mesophase pitch-based carbon fibers, weaving the carbon fibers into carbon cloth, carrying out puncture treatment on the carbon cloth in the Z direction by using PAN-based carbon fibers, carrying out graphitization and pyrolytic carbon densification treatment, and carrying out graphitization again to obtain a porous C / C composite material framework; and after the surface of the porous C / C composite material framework is shelled, introducing SiC into the porous C / C composite material framework through a slit type chemical vapor infiltration method for densification and heat treatment to obtain the C / C-SiCcomposite material with high thermal conductivity and oxidation resistance.

Description

technical field [0001] The invention belongs to the technical field of structure-function integrated composite materials. In particular, it relates to a preparation method of a C / C-SiC composite material with high thermal conductivity and oxidation resistance. Background technique [0002] C / C-SiC composite materials have many excellent properties such as good chemical stability, high hardness, good toughness, low thermal expansion coefficient, good thermal shock resistance and low density, and are considered to be another new type of composite material after C / C composite materials. strategic material. C / C-SiC composite materials are widely used, and can realize instantaneous life service (solid rocket motor, 2800-3000 ℃), limited life service (solid rocket motor, 2000-2200 ℃) and long life service (aero engine, 1650 ℃) . However, as the high-temperature service environment becomes more and more harsh, the thermal gradient and thermal stress concentration of C / C-SiC comp...

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
IPC IPC(8): C04B35/83C04B35/577C04B35/80C04B35/622
CPCC04B35/83C04B35/571C04B35/622C04B2235/614C04B2235/5252C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/96C04B2235/9607C04B2235/9615
Inventor 叶崇黄东刘金水刘玲樊桢朱世鹏张鹏
Owner 湖南东映碳材料科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com