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A carbon-based panel interlayer carbon foam integrated material and preparation method thereof

A technology of carbon foam and bulk materials, applied in carbon preparation/purification, chemical instruments and methods, lamination, etc., can solve problems such as poor heat resistance, complicated process, poor stability, etc., achieve high mechanical properties, improve Excellent thermodynamic performance and thermal insulation performance

Active Publication Date: 2022-06-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing carbon foam materials need to be cemented or mechanically connected, the process is complicated, the stability is poor, and the heat resistance performance is poor. Aiming at the defects in the prior art, a multi-layer sandwich structure without bonding is provided , while maintaining the original thermal insulation performance, the mechanical properties of the material are improved, and it also has properties such as light weight, low thermal expansion coefficient, low density, large specific surface area, high vacuum stability, and good thermal shock resistance, which can meet the thermal requirements Requirements for the use of high temperature resistant insulation materials in protection systems

Method used

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  • A carbon-based panel interlayer carbon foam integrated material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a carbon-based panel interlayer carbon foam integrated material, which is prepared from a phenolic resin solution.

[0043] The phenolic resin powder is the carbon source, and a rectangular mold with a length, width and height of 80mm, 80mm and 50mm is used.

[0044] The specific preparation method is as follows:

[0045] (1) Add 100g of phenolic resin to 50ml of absolute ethanol, the mass ratio of phenolic resin to absolute ethanol is 3:1, and stir with a mechanical mixer until the desired viscosity. The rotating speed of the mechanical stirrer is 500r / min; the stirring time is 3h; the viscosity of the phenolic resin ethanol solution is 30000cP. Continue to cool the obtained phenolic resin ethanol solution at room temperature, and the cooling time is 15min.

[0046] (2) Add 3% emulsifier of the phenolic resin ethanol solution mass to the above-mentioned phenolic resin ethanol solution, and stir evenly with a mechanical stirrer. Among them, t...

Embodiment 2

[0052] This embodiment provides a carbon-based panel interlayer carbon foam integrated material, which is prepared from a phenolic resin solution.

[0053] The phenolic resin powder is the carbon source, and a rectangular mold with a length, width and height of 80mm, 80mm and 50mm is used.

[0054] The specific preparation method is as follows:

[0055] (1) Add 100g of phenolic resin to 50ml of absolute ethanol, the mass ratio of phenolic resin to absolute ethanol is 3:1, and stir with a mechanical mixer until the desired viscosity. The rotating speed of the mechanical stirrer is 500r / min; the stirring time is 3h; the viscosity of the phenolic resin ethanol solution is 30000cP. Continue to cool the obtained phenolic resin ethanol solution at room temperature, and the cooling time is 10 min.

[0056] (2) Add 3% emulsifier of the phenolic resin ethanol solution mass to the above-mentioned phenolic resin ethanol solution, and stir evenly with a mechanical stirrer. Among them, ...

Embodiment 3

[0062] This embodiment provides a carbon-based panel interlayer carbon foam integrated material, which is prepared from a phenolic resin solution.

[0063] The phenolic resin powder is the carbon source, and a rectangular mold with a length, width and height of 80mm, 80mm and 50mm is used.

[0064] The specific preparation method is as follows:

[0065] (1) Add 100g of phenolic resin to 50ml of absolute ethanol, the mass ratio of phenolic resin to absolute ethanol is 3:1, and stir with a mechanical mixer until the desired viscosity. The rotating speed of the mechanical stirrer is 500r / min; the stirring time is 3h; the viscosity of the phenolic resin ethanol solution is 30000cP. Continue to cool the obtained phenolic resin ethanol solution at room temperature, and the cooling time is 20 min.

[0066] (2) Add 3% emulsifier of the phenolic resin ethanol solution mass to the above-mentioned phenolic resin ethanol solution, and stir evenly with a mechanical stirrer. Among them, ...

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Abstract

The invention provides a carbon-based panel interlayer carbon foam integrated material and a preparation method thereof. The preparation method includes the preparation of a phenolic foam block material; the compounding of the phenolic foam block material and the carbon-based panel and the combination of the phenolic foam block material After the solidification of the carbon-based panel composite, the carbon-based panel interlayer carbon foam integrated material is prepared through three main steps; there is no adhesive or adhesive in the preparation process, and the upper and lower surface panels are ready after high-temperature melting or cracking and carbonization. Formable, the thermal conductivity of the prepared carbon-based panel sandwich carbon foam integrated material is 0.058W / (m·K)~0.063W / (m·K), and the density is 0.38g / cm 3 , has good thermal insulation properties.

Description

technical field [0001] The invention relates to the technical field of thermal protection materials, in particular to a carbon-based panel interlayer carbon foam integrated material and a preparation method thereof. Background technique [0002] Thermal Protection System (TPS) is a key subsystem necessary for spacecraft or components serving in high temperature environments. It is one of the most critical technologies to ensure safe service of spacecraft in extreme environments. Thermal insulation materials are thermal protection. An important part of the system, it prevents the transfer of heat from the outside to the inside. Therefore, there is an urgent need for a thermal protection system with high temperature stability and low thermal conductivity for spacecraft or components serving in high temperature environments. Although alumina, mullite, silicon oxide, etc. have excellent performance, they can not withstand the temperature of 2000 ° C, they are easy to become mol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B37/15B32B38/00C01B32/05
CPCB32B5/20B32B9/007B32B9/046B32B5/02B32B5/245B32B37/15B32B38/0036C01B32/05B32B2038/0076B32B2038/0084B32B2262/106B32B2266/04B32B2307/304B32B2307/718B32B2307/734B32B2307/72B32B2307/558Y02P20/129
Inventor 徐宝升王宪博曲立杰周飞飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY