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High-temperature nanometer microporous heat transfer board and preparation method thereof

A heat transfer plate and nanotechnology, applied in the field of high-temperature nano-micro heat transfer plate and its preparation, can solve the problems of easy fracture and pulverization in cutting, easy damage in transportation, and reduction of SiO, and achieve good strength and toughness, and are easy to use and transport Effect

Active Publication Date: 2013-03-27
上海伊索热能技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the addition of low-melting fiber can improve the SiO 2 Mechanical strength of airgel, but reduced SiO 2 The service temperature and temperature resistance grade of airgel still have adverse phenomena such as easy damage during transportation, easy breaking and pulverization during cutting, etc. in actual use, which affect the production qualification rate and use conditions of the product

Method used

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  • High-temperature nanometer microporous heat transfer board and preparation method thereof
  • High-temperature nanometer microporous heat transfer board and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] (1) Preparation method of high-temperature nano-micro heat transfer plate

[0021] 1) SiO2 2 Preparation of airgel: Weigh 40g of water glass and place it in a beaker, add 500g of water to dilute and disperse it evenly, then weigh 460g of silica fume, TiO 2 300g, Al 2 o 3 24g, Cr 2 o 3 1.6g was added to the diluted water glass solution and stirred evenly, then weighed 40g of alumina fiber into the mixture and stirred for 3-5min to ensure that the alumina fiber was evenly dispersed in the mixture, and added 0.2 g catalyst ethylene glycol, control the gel time to 60min, and use hydrochloric acid to adjust the pH value of the mixture to 10, and the mixture becomes gel after fully stirring;

[0022] 2) Preparation of high-temperature nano-micro heat transfer plate: seal the container holding the gel, and place it in an environment with a temperature of 45°C for 4 hours. After standing still, stir the gel evenly and inject it into the mold, and vibrate the gel injected ...

Embodiment 2

[0026] (1) Preparation method of high-temperature nano-micro heat transfer plate

[0027] 1) SiO2 2 Preparation of airgel: Weigh 30g of water glass and place it in a beaker, add 500g of water to dilute and disperse it evenly, weigh 480g of silica fume, TiO 2 300g, Al 2 o 3 20g, Cr 2 o 3 Add 1.8g into the diluted water glass solution and stir evenly, then weigh 50g of alumina fiber and put it into the mixture and stir for 3-5min to ensure that the alumina fiber is evenly dispersed in the mixture, add 0.25g of catalyst to the above container Ethylene glycol, control the gel time to 45min, and use hydrochloric acid to adjust the pH value of the mixture to 11, and the mixture becomes gel after fully stirring;

[0028]2) Preparation of high-temperature nano-micro heat transfer plate: seal the container holding the gel, and place it in an environment with a temperature of 25°C for 5 hours. After standing still, stir the gel evenly and inject it into the mold, and vibrate the g...

Embodiment 3

[0032] (1) Preparation method of high-temperature nano-micro heat transfer plate

[0033] 1) SiO2 2 Preparation of airgel: Weigh 30g of water glass and place it in a beaker, add 500g of water to dilute and disperse it evenly, weigh 500g of silica fume, TiO 2 250g, Al 2 o 3 22g, Cr 2 o 3 Add 1.5g into the container of the diluted water glass solution and stir evenly, then weigh 40g of alumina fibers into the mixture and stir for 3-5min to ensure that the alumina fibers are evenly dispersed in the mixture, add 0.1g catalyst sulfuric acid, control the gel time to 45min, and use hydrochloric acid to adjust the pH value of the mixture to 11, and the mixture becomes gel after fully stirring;

[0034] 2) Preparation of high-temperature nano-micro heat transfer plate: seal the container holding the gel, and place it in an environment with a temperature of 50°C for 4 hours. After standing still, stir the gel evenly and inject it into the mold, and vibrate the gel injected into th...

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Abstract

The invention relates to a high-temperature nanometer microporous heat transfer board and a preparation method thereof. The heat transfer board is formed by coating glass fiber cloth or aluminium foil on the outer surface of SiO2 aerogel, wherein the SiO2 aerogel is composed of the following components of, by weight, 2-5 parts of water glass, 55-60 parts of silica fume, 35-38 parts of TiO2, 1-3 parts of Al2O3, 0.02-0.2 parts of Cr2O and 2-5 parts of alumina fiber. With the high-temperature nanometer microporous heat transfer board provided by the invention, mechanical strength of the material can be further increased while a usage temperature and a temperature-resistance grade of the material are guaranteed, by the improvement and adjustment of a conventional SiO2 aerogel formula, and particularly by the design of coating the glass fiber cloth or the aluminium foil on the outer surface of a product. The high-temperature nanometer microporous heat transfer board is convenient for transportation and mechanical process, and provides wider usage environment for the material.

Description

technical field [0001] The invention relates to a high-temperature nano-micro heat transfer plate and a preparation method thereof. Background technique [0002] Industrial furnaces and various high-temperature reactors are equipment that consume a lot of energy. The energy consumption of kilns accounts for about 40%-75% of the total production energy consumption, and most of the energy is wasted and lost. At present, the materials used for thermal insulation of thermal equipment mainly include high-temperature aluminum silicate ceramic fiber products, calcium silicate thermal insulation products, glass fiber and mineral wool products, etc. Calcium silicate thermal insulation products, glass fiber and rock wool products are mainly used as thermal insulation materials under medium and low temperature conditions; increase and rise. Therefore, a new generation of lightweight and efficient refractory insulation materials has become the main trend of development. [0003] Heat...

Claims

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Application Information

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IPC IPC(8): C04B28/26
Inventor 张朝礼
Owner 上海伊索热能技术股份有限公司
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