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Vacuum insulation material comprising a large specific surface area getter material

A technology of absorbing material and specific surface area, used in insulation improvement, thin material processing, heat exchange equipment, etc., can solve problems such as insulation performance decline, limitation, and reduction of initial thermal conductivity value.

Active Publication Date: 2014-08-27
ES GLOBAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the moisture remaining in the core material, the skin material, or the inside of the vacuum chamber acts as a heat transfer medium, thereby increasing the thermal conductivity, resulting in a decrease in thermal insulation performance. In order to solve this problem, active substances for adsorption are mainly used as adsorbed moisture. absorbent material
[0003] However, the adsorption active substances used as absorbent materials in the past have a low specific surface area, and the reaction speed with water is slow, and the amount of water that can be adsorbed in the same time is limited. In terms of reducing the initial thermal conductivity There are limitations
[0004] According to Korean Laid-Open Patent No. 10-2003-0072717, it is described that absorbent materials used as organic gas and moisture adsorbents are classified according to chemical absorbent materials or physical absorbent materials and applied according to different uses, but there is no Absorbent material characterized by specific surface area disclosed

Method used

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  • Vacuum insulation material comprising a large specific surface area getter material
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  • Vacuum insulation material comprising a large specific surface area getter material

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preparation example Construction

[0026] Preparation method of active substance for adsorption

[0027] The present invention can provide a kind of preparation method of active material for adsorption, it is characterized in that, comprises: step (a), one kind of being selected from calcium carbonate, barium carbonate, magnesium carbonate, aluminum carbonate or strontium carbonate is carried out acid treatment, Thereby the cation is selectively eluted; Step (b), extracting the above-mentioned eluted cation; One of them is sintered.

[0028] The present invention is characterized in that the calcium carbonate used is derived from limestone. The above limestone may contain silica, alumina, magnesia and the like as impurities. The above-mentioned limestone is a sedimentary rock mainly composed of calcium carbonate, which is white, gray or dark gray, black, and forms a block or layer. In the preparation of the active material for adsorption of the present invention, by using limestone as the main raw material...

Embodiment 1

[0043] Mix 200 g of water in 30 g of citric acid to prepare a citric acid solution with a pH of 0. The citric acid solution prepared above was added to a solution obtained by sufficiently dispersing 30 g of calcium carbonate in a solid powder state into 300 g of water to selectively elute calcium ions. At this time, the extraction time was set to 30 minutes, and after filtering using filter paper, it dried in 130 degreeC oven for 1 hour. Sinter the dry material obtained by the above drying at a temperature of 900°C for 1 hour to prepare a product with a specific surface area of ​​15m 2 / g and a powder-shaped calcium oxide absorbent material with a diameter of 10 μm.

Embodiment 2

[0045] Mix 200 g of water in 30 g of citric acid to prepare a citric acid solution with a pH of 0. The citric acid solution prepared above was added to a solution obtained by sufficiently dispersing 30 g of barium carbonate in a solid powder state into 300 g of water to selectively elute barium ions. At this time, the extraction time was set to 10 minutes, and after filtering using filter paper, it dried in 130 degreeC oven for 1 hour. Sinter the dry product obtained by the above drying at 1000°C for 2 hours to prepare a product with a specific surface area of ​​40m 2 / g and a powder-shaped barium oxide absorbent material with a diameter of 15 μm.

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Abstract

The present invention provides a getter material comprising an adsorbent active substance of which the specific surface area is between 5 and 40 m<2> / g. Also, the present invention provides a production method for an adsorbent active substance comprising the steps of: (a) selectively eluting cations by the acid processing of any one of calcium carbonate, barium carbonate, magnesium carbonate, aluminium carbonate or strontium carbonate; (b) extracting the eluted cations; and (c) calcining the any one of calcium carbonate, barium carbonate, magnesium carbonate, aluminium carbonate or strontium carbonate from which cations have been extracted.

Description

technical field [0001] The present invention relates to a kind of vacuum insulation material containing high specific surface area absorbing material, more specifically relates to a kind of containing specific surface area is 5 ~ 40m 2 / g of absorbent material for adsorption of active substances. Background technique [0002] Conventional vacuum insulation materials are made by putting glass fiber used as a core material in a multilayer film including aluminum foil or a metal vaporized film skin material, attaching an absorbent material, and then vacuum exhausting. Among them, the absorbing material is used to absorb moisture, air or gas remaining inside the vacuum insulation material or flowing in from the outside. In particular, the moisture remaining in the core material, the skin material, or the interior of the vacuum chamber acts as a heat transfer medium, thereby increasing the thermal conductivity, resulting in a decrease in thermal insulation performance. In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/065F16L59/04B01J20/02
CPCC01F11/06E04B1/803Y10T428/2982Y02B80/12B01J20/3078B01J20/041B01J20/02B01J20/08B01J20/30F16L59/04F16L59/065B01J20/3071B01J20/28059B01D53/02B01D53/261B01D2251/404B01D2251/408B01D2253/1124B01D2253/306
Inventor 金恩珠郑胜文李明李周炯
Owner ES GLOBAL CO LTD
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