Preparation method of carbon/carbon-copper composite material

A technology of carbon composite materials and composite materials, which is applied in the field of preparation of carbon/carbon-copper composite materials, can solve problems such as unsuitable carbon-copper dual-phase materials, high equipment requirements, and reduced thermal conductivity of materials, so as to avoid Difficult pressurization, high degree of crystallization, and low equipment requirements

Active Publication Date: 2012-11-14
无锡博智复合材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the Ti content has a significant impact on the thermal conductivity of the material. Some studies have shown that the thermal conductivity of the material decreases when the Ti content is higher than 5%, so this method is not suitable for the preparation of high-purity carbon-copper dual-phase materials. High equipment requirements

Method used

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  • Preparation method of carbon/carbon-copper composite material
  • Preparation method of carbon/carbon-copper composite material
  • Preparation method of carbon/carbon-copper composite material

Examples

Experimental program
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Embodiment 1

[0024] The present embodiment is a kind of preparation method of carbon / carbon-copper composite material, and concrete process is:

[0025] Step 1: Clean the sample: the graphitized and density of 0.60g / cm 3 The carbon / carbon composite samples were ultrasonically cleaned in absolute ethanol for 20 min. Place the cleaned carbon / carbon composite material sample in an electric blast drying oven, and dry it at 60°C for 10 hours before use;

[0026] Step 2: Vacuum impregnation of saturated inorganic copper salt solution to introduce copper: the specific process is:

[0027] a. Put the carbon / carbon composite material sample cleaned in step 1 into a vacuum tank, evacuate to -0.08MPa, and pass in a saturated copper sulfate aqueous solution with a temperature of 60°C, and wait for the carbon / carbon composite material sample to Immersed completely in the solution, take it out after 20 minutes and use a polytetrafluoroethylene plate to scrape off the copper sulfate pentahydrate attach...

Embodiment 2

[0033] Step 1: Clean the sample: the graphitized and density of 0.70g / cm 3 The carbon / carbon composite samples were ultrasonically cleaned in absolute ethanol for 10 min. Place the cleaned carbon / carbon composite material sample in an electric blast drying oven, and dry it at 80°C for 24 hours before use;

[0034] Step 2: Vacuum impregnation of saturated inorganic copper salt solution to introduce copper: the specific process is:

[0035] a. Put the carbon / carbon composite material sample cleaned in step 1 into a vacuum tank, evacuate to -0.10MPa, and pass in a saturated copper nitrate aqueous solution with a temperature of 85°C, and wait for the carbon / carbon composite material sample to Immersed completely in the solution, take it out after 30 minutes and use a polytetrafluoroethylene board to scrape off the copper nitrate trihydrate attached to the surface. Place the composite material sample immersed in saturated copper nitrate aqueous solution in an electric blast dryin...

Embodiment 3

[0041] Step 1: Clean the sample: the graphitized and density of 1.40g / cm 3 The carbon / carbon composite samples were ultrasonically cleaned in absolute ethanol for 30 min. Place the cleaned carbon / carbon composite material sample in an electric blast drying oven, and dry it at 95°C for 30 hours before use;

[0042] Step 2: Vacuum impregnation of saturated inorganic copper salt solution to introduce copper: the specific process is:

[0043] a. Put the carbon / carbon composite material sample cleaned in step 1 into a vacuum tank, evacuate to -0.09MPa, and pass in a saturated copper sulfate aqueous solution with a temperature of 95°C, and wait for the carbon / carbon composite material sample to Immersed completely in the solution, take it out after 15 minutes and use a polytetrafluoroethylene board to scrape off the copper sulfate pentahydrate attached to the surface. The composite material sample immersed in a saturated copper sulfate aqueous solution was placed in an electric bl...

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Abstract

The invention discloses a preparation method of carbon/carbon-copper composite material. The preparation method is to introduce copper into carbon/carbon composite material via a reaction method of vacuum dipping of inorganic copper salt aqueous solution-decomposing of inorganic copper salt at high temperature-in-situ carbon thermal reduction. The preparation method comprises the steps of cleaning and parching a graphited carbon/carbon composite material sample with density of 0.6 to 1.40g/cm<3> for standby; preparing inorganic copper salt aqueous solution with a certain concentration, and heating, and then feeding the heated saturated solution into the carbon/carbon composite material sample under a vacuum condition so as to introduce the copper source, and then parching and thermally processing at high temperature to obtain the copper-contained carbon/carbon composite material sample; finally densifying the prepared copper-contained carbon/carbon composite material sample to obtain the carbon/carbon-copper composite material sample. The prepared carbon/carbon-copper composite material has two phases of carbon and copper, and has no impurities; and the coppers are uniformly distributed in the composite material, and combined with the carbon well. The inorganic copper salt is copper sulfate or cupric nitrate.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a carbon / carbon-copper composite material. Background technique [0002] Copper-infiltrated high-temperature-resistant materials have the characteristics of low cost, excellent machinability and relatively good ablation resistance. Among them, composite materials such as first-generation tungsten-infiltrated copper and second-generation graphite-infiltrated copper have been successfully used in the preparation of missile throat linings and gas rudders. And other key components of solid rocket motors, and carbon / carbon-copper composite materials, as the third-generation copper-infiltrated high-temperature and ablation-resistant materials, have also entered the research and development stage. In addition, carbon / copper composite materials have become ideal materials for electrical contact components such as pantograph slides and brushes of a new generation of electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10B22F9/24
Inventor 李贺军刘磊史小红李克智姚西媛吴恒
Owner 无锡博智复合材料有限公司
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