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Method for improving binding strength of two-dimensional carbon/carbon composite material

A technology of interface bonding strength and carbon composite material, which is applied in the field of improving the interface bonding strength of two-dimensional carbon/carbon composite materials, can solve problems such as excessive interface bonding, and achieve improved tensile properties, moderate bonding strength, and rough fracture morphology. Effect

Active Publication Date: 2015-07-08
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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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 problem of too strong interfacial bonding in the existing two-dimensional carbon / carbon composite material technology, and propose a method for improving the interfacial bonding strength of two-dimensional carbon / carbon composite materials

Method used

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  • Method for improving binding strength of two-dimensional carbon/carbon composite material
  • Method for improving binding strength of two-dimensional carbon/carbon composite material
  • Method for improving binding strength of two-dimensional carbon/carbon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Weave 5Kg carbon fiber into four pieces of satin carbon cloth;

[0035] 2) Mix the carbon black filler and the phenolic resin solution in a mass ratio of 1:9 to obtain a phenolic resin solution, and impregnate the carbon cloth obtained in step 1) into the phenolic resin solution to make a prepreg, and cut it into 200mm ×200mm cloth;

[0036] 3) Lay the cloth pieces obtained in 2) at 0° and 90° to form a green body with a thickness of 20mm;

[0037] 4) Heat the ply body obtained in 3) on the platform of the hot press to 90°C, hold the temperature for 30 minutes and start to pressurize to 5MPa, keep the pressure for 2 hours, then continue to heat up to 180°C, keep the temperature and hold the pressure 4h, obtain the two-dimensional carbon / carbon composite material process sample;

[0038] 5) Put the two-dimensional composite material process sample obtained in 4) into a carbonization furnace and raise the temperature to 850°C under the protection of an argon atmosphe...

Embodiment 2

[0046] 1) Weave 5Kg carbon fiber into eight pieces of satin carbon cloth;

[0047] 2) Mix the carbon black filler with the phenolic resin solution at a mass ratio of 1:9 to obtain a phenolic resin solution, and impregnate the carbon cloth obtained in step 1) into the phenolic resin solution to make a prepreg, and mix the ) impregnated with the obtained phenolic resin containing filler to make a prepreg, and cut it into 200mm×200mm cloth pieces;

[0048] 3) Lay the cloth pieces obtained in 2) at 0° and 90° to form a green body with a thickness of 20mm;

[0049] 4) Heat the ply body obtained in 3) on the platform of the hot press to 90°C, hold the temperature for 30 minutes and start to pressurize to 5MPa, keep the pressure for 2 hours, then continue to heat up to 180°C, keep the temperature and hold the pressure 4h, obtain the two-dimensional carbon / carbon composite material process sample;

[0050] 5) Put the two-dimensional composite material process sample obtained in 4) i...

Embodiment 3

[0058] 1) Weave 5Kg carbon fiber into four pieces of satin-weave carbon cloth, pretreatment temperature of carbon cloth is 850℃, keep warm for 1h;

[0059] 2) Mix the carbon black filler with the phenolic resin solution at a mass ratio of 1:9 to obtain a phenolic resin solution, and impregnate the carbon cloth obtained in step 1) into the phenolic resin solution to make a prepreg, and mix the ) impregnated with the obtained phenolic resin containing filler to make a prepreg, and cut it into 200mm×200mm cloth pieces;

[0060] 3) Lay the cloth pieces obtained in 2) at 0° and 90° to form a 40mm thick green body;

[0061] 4) Heat the ply body obtained in 3) on the platform of the hot press to 90°C, hold the temperature for 30 minutes and start to pressurize to 5MPa, keep the pressure for 2 hours, then continue to heat up to 180°C, keep the temperature and hold the pressure 4h, obtain the two-dimensional carbon / carbon composite material process sample;

[0062] 5) Put the two-dim...

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Abstract

The invention relates to a method for improving the binding strength of a two-dimensional carbon / carbon composite material so as to improve the tensile strength of the material in the horizontal direction, belonging to the technical field of heatproof bearing integrated carbon / carbon composite materials. The two-dimensional carbon / carbon composite material prepared by the method is moderate in binding strength of fibers and matrix interfaces, the fracture appearance is rough, multi-layered and multi-size fibers can be pulled out, the bearing and the force conduction effect of the fibers are brought into good play, the tensile property of the material is greatly improved, and the tensile strength is 137-301MPa, that is, the tensile strength is improved by more than 50% when being compared with the original tensile strength of 92MPa.

Description

technical field [0001] The invention relates to a method for improving the interfacial bonding strength of a two-dimensional carbon / carbon composite material, so as to improve the tensile strength in the plane direction of the material, and belongs to the technical field of heat-bearing integrated carbon / carbon composite material preparation. Background technique [0002] Carbon / Carbon Composite (Carbon / Carbon Composite) is a type of carbon-based composite material reinforced by carbon fiber. It combines the high-temperature performance of carbon materials and the excellent mechanical properties of composite materials. It occupies an important position in the field of aerospace thermal protection materials. According to the classification of reinforced prefabricated body structure, it can be divided into two-dimensional carbon / carbon composite materials, three-dimensional carbon / carbon composite materials, four-way or even multi-directional carbon / carbon composite materials....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/622
Inventor 徐林陈铮杨文彬赵高文冯志海
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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