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Aluminum thermal fin material

A heat sink and aluminum plate technology, applied in the field of aluminum heat sink materials, can solve the problems of reduced hydrophilicity, ambiguity, and difficulty in maintaining the surface hydrophilicity of heat sink materials for a long time, so as to achieve effective heat exchange and reduce occlusion

Inactive Publication Date: 2012-05-30
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cause of the organic hydrophilic resin film is not clear, and there is a problem that the hydrophilicity decreases over time when it comes into contact with water.
Therefore, it is difficult to maintain the hydrophilicity of the surface of the heat sink material for a long time, and there is still room for improvement

Method used

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  • Aluminum thermal fin material
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Examples

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Embodiment Construction

[0020] The aluminum heat sink material of the present invention has a hydrophilic coating layer obtained from a resin composition containing a specific resin binder and porous fine particles. It is considered that this resin binder imparts excellent hydrophilicity to the coating layer, and at the same time, part of the dew condensation water adhering to the surface of the heat sink material penetrates into the coating layer and is absorbed into the open pores of the porous particles. The contact angle of the layer with respect to water becomes smaller, and it becomes possible to suppress blocking between the fin pieces. In addition, the moisture absorption performance of the porous fine particles is exerted for a long period of time, so the hydrophilicity of the heat sink material of the present invention is also maintained for a long period of time.

[0021] The heat sink material of the present invention is made of an aluminum plate or an aluminum alloy plate. From the viewpoin...

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Abstract

The invention finds a film layer capable of showing hydrophilicity for a long time to provide an aluminum thermal fin material on a surface. The aluminum thermal fin material is formed by the hydrophilic film layer obtained by a resin composition comprising a resin bonder and a porous particle on the surface of the aluminum sheet or aluminum alloy sheet, wherein the resin bonder is (co)polymer ormixture of the (co)polymers constituted by more than one function group selected from carboxylic acid group, sulfonic group, hydroxyl group, amido group and ether bond and one part of whole of the carboxylic acid group and / or the sulfonic group is formed into the alkali salt and the porous particle contains non-hydrosoluble acrylic resin or alginic acid resin.

Description

Technical field [0001] The present invention relates to a heat sink (fin) material made of aluminum (including aluminum alloy) that forms a film layer with excellent hydrophilicity on the surface. For example, it relates to a heat sink material for heat exchangers such as air conditioners. A preferred aluminum heat sink material that can maintain the surface properties that dew condensation water easily wets for a long time. Background technique [0002] The heat exchanger of the air conditioner widely uses aluminum with excellent thermal conductivity, workability, and corrosion resistance. In order to efficiently exchange heat, and to make the space compact (compact), the aluminum is arranged at narrow intervals. The structure of the heat sink. Therefore, during the operation of the air conditioner, if the temperature of the surface of the fin material reaches below the dew point of the air, the condensed water adhering to the surface of the fin material will condense, which ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08
Inventor 藤原直也馆麻由
Owner KOBE STEEL LTD
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