A kind of preparation method of winding high-strength and high-purity carbon/carbon composite material rotor

A carbon composite material and winding molding technology, which is applied in the field of preparing high-strength and high-purity carbon/carbon composite material rotors by winding, can solve the problems of long preparation cycle, complicated process, and difficulty in achieving high purity, and achieves shortening production cycle, The production process is simple and the effect of avoiding the phenomenon of surface crusting

Active Publication Date: 2022-05-13
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above method uses winding molding technology to prepare high-strength carbon / carbon composite materials, mainly through pretreatment of the resin and / or increasing the material density to achieve high strength, the process is complex, the preparation cycle is long, and due to the introduction of resin, it is difficult to achieve high purity
At the same time, there is no complete research on the preparation of carbon / carbon composite materials by single chemical vapor deposition method.

Method used

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  • A kind of preparation method of winding high-strength and high-purity carbon/carbon composite material rotor
  • A kind of preparation method of winding high-strength and high-purity carbon/carbon composite material rotor
  • A kind of preparation method of winding high-strength and high-purity carbon/carbon composite material rotor

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Experimental program
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Effect test

Embodiment 1

[0041] This embodiment includes the following steps:

[0042] Step 1. Mandrel preparation: use graphite as raw material to prepare a mandrel as a winding tool; the outer surface structure and size of the mandrel are similar to the inner surface structure and size of the target product carbon / carbon composite material revolving body, the specific The schematic diagram of the winding tooling structure is as follows: figure 2 As shown, the mandrel includes a straight cylinder section 2 and a head section 4 arranged at the end of the straight cylinder section 2. Fasteners 5 are arranged on the outside of the head section 4, and every two mandrel molds are symmetrically arranged on the mandrel 1. The two fasteners 5 are linked with the mandrel 1, and there is a processing reserved seam 3 between the two mandrels to protect the mandrel from being damaged when the two mandrels are machined and separated. The straight section 2 of the mandrel is The outer diameter is 633mm, and the ...

Embodiment 2

[0051] This embodiment includes the following steps:

[0052] Step 1. Mandrel preparation: use graphite as raw material to prepare a mandrel as a winding tool; the outer surface structure and size of the mandrel are similar to the inner surface structure and size of the target product carbon / carbon composite material revolving body, the specific The schematic diagram of the winding tooling structure is as follows: figure 2 As shown, the mandrel includes a straight cylinder section 2 and a head section 4 arranged at the end of the straight cylinder section 2. Fasteners 5 are arranged on the outside of the head section 4, and every two mandrel molds are symmetrically arranged on the mandrel 1. The two fasteners 5 are linked with the mandrel 1, and there is a processing reserved seam 3 between the two mandrels to protect the mandrel from being damaged when the two mandrels are machined and separated. The straight section 2 of the mandrel is The outer diameter is 621mm, and the ...

Embodiment 3

[0061] This embodiment includes the following steps:

[0062] Step 1. Mandrel preparation: use graphite as raw material to prepare a mandrel as a winding tool; the outer surface structure and size of the mandrel are similar to the inner surface structure and size of the target product carbon / carbon composite material revolving body, the specific The schematic diagram of the winding tooling structure is as follows: Figure 5As shown, the mandrel includes a straight cylinder section 2, which is supported by a support plate, and is fixed on the mandrel 1 by a fastener 5 to be linked with the mandrel 1, and the outer diameter of the straight cylinder section 2 of the mandrel is 377.6 mm;

[0063] Step 2. Dry yarn winding: install the mandrel prepared in step 1 on the winding machine and link with the mandrel through the card slot, and lay a single layer of graphite paper evenly and tightly on the surface of the mandrel as a release layer, in which the single layer of graphite The...

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Abstract

The invention discloses a method for preparing a revolving body of high-strength and high-purity carbon / carbon composite material by winding. The method comprises: 1. preparing a mandrel; 3. Perform chemical vapor deposition densification on dry yarn prefabricated parts to form deposition parts; 4. Repeat dry yarn winding process and chemical vapor deposition densification process to form carbon / carbon densification parts; 5. Carbon / carbon densification parts are treated at high temperature Obtain a high-temperature treatment part; 6. Prepare a pyrolytic carbon or silicon carbide coating on the surface of the high-temperature treatment part after demoulding to obtain a carbon / carbon composite material revolving body. The present invention adopts the method of graded winding molding-chemical vapor infiltration densification, which shortens the gas diffusion path of chemical vapor infiltration densification, thereby avoiding the phenomenon that the surface density of the deposit body increases faster than that of the interior, and improves the rotation of carbon / carbon composite materials. The bonding strength of the interface between the bulk layers improves the quality and purity of the product, and is used in photovoltaics, semiconductors and other fields.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a method for preparing a revolving body of high-strength and high-purity carbon / carbon composite material by winding. Background technique [0002] The application of winding forming technology to prepare carbon / carbon composite products can maintain the quality of continuous fiber laying and is conducive to improving the hoop tensile properties of products. However, when carbon / carbon composite materials are wound and formed, it is often necessary to introduce resin during the winding and densification process. On the one hand, the resin carbon produced in the pyrolysis process is weakly bonded to the carbon fiber, so the interlayer bonding strength is weak. Defects such as delamination, bulging, and yarn drop are easy to occur during the application process. On the other hand, the resin contains more non-carbon elements, which makes it difficult to achi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/52C04B35/622
CPCC04B35/83C04B35/52C04B35/622C04B2235/77C04B2235/96
Inventor 赵松程皓宁星华张灵玉党瑞萍彭志刚张永辉代丽娜王旭鹏姚成君
Owner XIAN CHAOMA SCI TECH
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