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Ultra-thin carbon-based composite panel and preparation method

A panel and carbon-based technology, which is applied in the field of preparation of ultra-thin C/C-Mo composite panels, can solve the problems of inability to make net shape, and achieve the effects of avoiding peeling and delamination, small thermal expansion coefficient, and firm and reliable combination

Active Publication Date: 2016-04-20
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The plate-shaped C / C-metal composite material prepared by this method has a thickness of at least 5 mm, which is mainly due to the prefabricated body prepared by needle punching and hook weaving, with a thickness of at least 3 mm. After subsequent densification, high-temperature graphite After melting, the overall thickness will exceed 5mm. Therefore, the existing C / C composite material preparation process cannot produce carbon-based composite panel materials with a thickness of less than 1mm.
[0005] Therefore, the development of a preparation process that can produce carbon-based composite panel materials with a thickness of less than 1 mm in net shape has become an urgent need in the field of ultra-thin carbon-based composite panel preparation technology. Carbon-based panel materials have not been reported in the relevant literature

Method used

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  • Ultra-thin carbon-based composite panel and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Cut 2 layers of molybdenum wire mesh (the parameters of molybdenum wire mesh used are: wire diameter 0.05mm, thickness 0.1mm) and 3 layers of plain weave T700 carbon fiber cloth (the parameters of used carbon cloth are: 3K, thickness 0.26mm) cut into 220× 220mm size, evenly brush the phenolic resin on the carbon cloth and the molybdenum wire mesh, lay them up alternately, and put them into the mold;

[0039] (2) Put the mold into the press, pressurize and cure, the curing temperature is 120°C, the curing time is 60min, and the control pressure is 10Mpa; after the resin is cured, the mold is pressurized and lowered to normal temperature to obtain a carbon-based panel prefabricated body;

[0040] (3) Put the carbon-based panel prefabricated body into a vacuum annealing furnace for carbonization. The carbonization process parameter is to raise the temperature from room temperature to 300°C at a heating rate of 5°C / min. After holding for 30 minutes, continue to heat up t...

Embodiment 2

[0045] (1) Cut 2 layers of molybdenum wire mesh (the parameters of molybdenum wire mesh used are: wire diameter 0.05mm, thickness 0.1mm) and 3 layers of plain weave T700 carbon fiber cloth (the parameters of used carbon cloth are: 1K, thickness 0.16mm) cut into 220× 220mm size, evenly brush the phenolic resin on the carbon cloth and the molybdenum wire mesh, lay them up alternately, and put them into the mold.

[0046] (2) Put the mold into the press, pressurize and cure, the curing temperature is 120°C, the curing time is 60min, and the control pressure is 10Mpa; after the resin is cured, the mold is pressurized and lowered to room temperature to obtain a carbon-based panel prefabricated body.

[0047] (3) Put the carbon-based panel prefabricated body into a vacuum annealing furnace for carbonization. The carbonization process parameter is to raise the temperature from room temperature to 300°C at a heating rate of 5°C / min. After holding for 30 minutes, continue to heat up to ...

Embodiment 3

[0052] (1) Cut 3 layers of molybdenum wire mesh (the parameters of molybdenum wire mesh used are: wire diameter 0.05mm, thickness 0.1mm) and 4 layers of plain weave T700 carbon fiber cloth (the parameters of used carbon cloth are: 1K, thickness 0.16mm) cut into 220× 220mm size, evenly brush the phenolic resin on the carbon cloth and the molybdenum wire mesh, lay them up alternately, and put them into the mold.

[0053] (2) Put the mold into the press, pressurize and cure, the curing temperature is 120°C, the curing time is 60min, and the control pressure is 10Mpa; after the resin is cured, the mold is pressurized and lowered to room temperature to obtain a carbon-based panel prefabricated body.

[0054] (3) Put the carbon-based panel prefabricated body into a vacuum annealing furnace for carbonization. The carbonization process parameter is to raise the temperature from room temperature to 300°C at a heating rate of 5°C / min. After holding for 30 minutes, continue to heat up to ...

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Abstract

The invention relates to an ultra-thin carbon-based composite panel and a preparation method. The panel is obtained from a preform composed of thermosetting phenol resin adhesive carbon fiber cloth on the two sides of a metal supporting framework after pressurizing, solidification, carbonization, CVI densification and high-temperature graphitization. The thickness of the panel is smaller than or equal to 0.96 mm. The preparation method includes the steps that by means of pressing, solidification and pressure maintaining of the thermosetting phenol resin adhesive carbon fiber cloth on the two sides of the metal supporting framework, the carbon-based panel preform is prepared, the preform is carbonized to prepare carbon-based panel initial blank, the carbon-based panel initial blank is subjected to carbon densification to prepared densified carbon-based panel blank, and the densified carbon-based panel blank is subjected to high-temperature graphitization. The technology is simple, the period is short, cost is low, the carbon-based composite panel material with the thickness being 1mm or below can be directly obtained through net forming, the prepared composite material is high in smoothness, small in thermal expansion coefficient and ion sputtering coefficient and high in mechanical strength, and industrial production and application are facilitated.

Description

technical field [0001] The invention relates to a carbon-based composite panel and a preparation method, in particular to a preparation method of an ultra-thin C / C-Mo composite panel. Background technique [0002] Compared with metal materials, carbon-based materials have the advantages of anti-sputtering, small thermal expansion and stable arrangement of small holes. The disadvantages are low mechanical strength and poor shock resistance. Ultra-thin carbon-based composite panels require very thin material thickness, very high finish, good electrical conductivity, and high mechanical strength. [0003] C / C composite materials have excellent characteristics such as high strength, high modulus, high fracture toughness, high thermal conductivity, excellent heat insulation and low density. The preparation method has three basic steps: prefabricated carbon fiber embryo body, matrix carbon densification and high temperature heat treatment. [0004] In the prior art, for the plat...

Claims

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Application Information

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IPC IPC(8): C04B35/76C04B35/52C04B35/622B32B9/02B32B9/04B32B15/02B32B15/14B32B7/10B32B33/00B32B37/10B32B37/12B32B37/06B32B38/00B32B38/16
CPCB32B7/10B32B9/02B32B9/041B32B15/02B32B15/14B32B33/00B32B37/06B32B37/10B32B37/1284B32B38/0036B32B38/164B32B2307/50B32B2307/538C04B35/52C04B35/622C04B35/76
Inventor 张福勤黎炳前刘怡王星星郑吉祥
Owner CENT SOUTH UNIV
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