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Preparation method for carbon/carbon composite material hollow plate

A carbon composite material, hollow board technology, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations and other directions, can solve the problems of increasing the cost and difficulty of preparation, heavy weight, etc., to reduce material and production costs, The effect of light overall weight and stable product quality

Inactive Publication Date: 2018-09-04
HUNAN NANFANG BOYUN NOVEL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the product made by this method is a solid plate with a large weight; if it is necessary to increase the air guide channel, the cost and difficulty of preparation will inevitably increase

Method used

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  • Preparation method for carbon/carbon composite material hollow plate
  • Preparation method for carbon/carbon composite material hollow plate
  • Preparation method for carbon/carbon composite material hollow plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to Figure 1-Figure 9 , the preparation method of the carbon / carbon composite material hollow plate of the present embodiment comprises the following steps:

[0043](1) Raw materials and mold preparation: Prepare the upper panel green body 11, the core body 211, the lower panel green body 31, and the resin binder; prepare the mold frame 4 and the core rod 41; Figure 1-Figure 4 As shown; the blank material of the upper panel blank 11, the core blank 211 and the lower panel blank 31 is a three-dimensional needle-punched felt, and the needle-punched density of the three-dimensional needle-punched felt is 30 needles / cm², the bulk density of the three-dimensional needle felt is 0.5g / cm³; the cross section of the core body 211 is in the shape of "H"; the resin binder is furan resin, the curing agent of the furan resin Adopt p-benzenemethanesulfonic acid, the mass fraction of described curing agent consumption is 5%.

[0044] (2) Blank making: (a) uniformly brush the...

Embodiment 2

[0055] The difference between this embodiment and embodiment 1 is only:

[0056] The needle-punched density of the three-dimensional needle-punched felt in step (1) is 50 needles / cm², and the volume density of the three-dimensional needle-punched felt is 0.6g / cm³; the resin binder is a phenolic resin, and the phenolic resin The curing agent adopts phosphoric acid, and the mass fraction of described curing agent consumption is 10%;

[0057] The curing temperature described in step (3) is 200°C, and the holding time is 0.5h;

[0058] The temperature of the carbonization treatment in step (4) is 950°C, and the temperature is kept for 5 hours;

[0059] The temperature of the high temperature treatment in step (5) is 1600°C, and the temperature is kept for 20 hours;

[0060] In step (6), the resin impregnation-curing-carbonization-high temperature cycle process is used to densify the green body, and the resin impregnation-cure-carbonization-high temperature cycle process is to pu...

Embodiment 3

[0063] The difference between this embodiment and embodiment 1 is only:

[0064] The needle-punched density of the three-dimensional needle-punched felt in step (1) is 10 needles / cm², and the volume density of the three-dimensional needle-punched felt is 0.4g / cm³; the curing agent of the furan resin is benzenesulfonic acid, and the The mass fraction of curing agent consumption is 1%;

[0065] The curing temperature described in step (3) is 250°C, and the holding time is 3 hours;

[0066] The temperature of the carbonization treatment in step (4) is 650°C, and the temperature is kept for 20 hours;

[0067] The temperature of the high temperature treatment in step (5) is 2200°C, and the temperature is kept for 5 hours;

[0068] In step (6), a combined process of chemical vapor deposition and resin impregnation-curing-carbonization-high temperature cycle is used to densify the green body. The temperature of the chemical vapor deposition is 1600°C, the carbon source gas is natur...

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Abstract

The invention discloses a preparation method for a carbon / carbon composite material hollow plate. The preparation method comprises the following steps: (1) preparing a raw material and a mould; (2) making a blank; (3) solidifying a blank body; (4) performing carbonization treatment; (5) performing high-temperature treatment; (6) performing density treatment: performing the density treatment on theblank body by using a technology mode of chemical vapor deposition and / or resin impregnation-solidification-carbonization-high temperature circulation; and (7) mechanically processing. The carbon / carbon composite material hollow plate prepared by the preparation method is light in total mass of a product, and is capable of greatly reducing the production cost while the mechanical and thermal properties are satisfied. In addition, the prepared hollow plate provides an air guide channel which is used for manufacturing a high temperature furnace. The possibility is provided for accurate designsof a high temperature furnace thermal field, a cooling speed and a cooling point, and the hollow plate is beneficial to improve the product quality and the stability of the high temperature furnace.

Description

technical field [0001] The invention relates to a preparation method of a carbon / carbon composite material plate, in particular to a preparation method of a carbon / carbon composite material hollow plate. Background technique [0002] Carbon / carbon composite material, that is, carbon fiber reinforced carbon matrix composite material, is a new material with excellent performance. It combines the special properties of carbon materials and the excellent mechanical properties of carbon fibers, such as: low density, high specific strength, high specific modulus, low expansion coefficient, good thermal conductivity, high temperature resistance, etc. Therefore, carbon / carbon composites are widely used in high temperature thermal field materials. At present, domestic high-temperature thermal fields (such as silicon single crystal pulling furnaces, polysilicon ingot casting furnaces, etc.) generally use graphite thermal fields and carbon / carbon composite material thermal fields. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/622C04B35/84B32B9/00B32B5/02B32B9/04B32B5/26B32B7/12B32B7/08B32B33/00B32B37/12B32B37/10B32B37/06B32B38/00
CPCB32B5/02B32B5/26B32B7/08B32B7/12B32B33/00B32B37/06B32B37/10B32B37/12B32B38/00B32B2038/008B32B2250/20B32B2262/106B32B2307/30C04B35/622C04B35/83C04B2235/77
Inventor 伍盼阳康志卫戴开瑛
Owner HUNAN NANFANG BOYUN NOVEL MATERIAL
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