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Aluminum fin material

A technology of fins and aluminum plates, which is applied in the field of aluminum fin materials, can solve problems such as difficulty in maintaining the hydrophilicity of the fin surface for a long time, and achieve the effects of suppressing water splashing, small ventilation resistance, and suppressing the reduction of hydrophilicity

Pending Publication Date: 2021-06-18
KOBE STEEL LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, if the heat exchanger is operated for many years, a large amount of components constituting the hydrophilic film will dissolve into the water due to the contact of water with the surface of the hydrophilic film.
Therefore, it is difficult to maintain the hydrophilicity of the fin surface for a long time

Method used

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  • Aluminum fin material
  • Aluminum fin material
  • Aluminum fin material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～13 and comparative example 1～5

[0118] As the aluminum plate, the specification of alloy number 1200 stipulated in JIS H 4000:2014 with a thickness of 0.1 mm was used. On the surface of one side of the aluminum plate, an under-treatment layer was formed by phosphoric acid chromate treatment. Next, a paint composition containing a corrosion-resistant film layer resin (acrylic resin, manufactured by Toya Gosei Co., Ltd.) was applied with a bar coater, and baked to form a coating composition with an adhesion amount of 4 mg / dm. 2 corrosion-resistant film layer.

[0119] Next, the coating composition obtained by dispersing the composition shown in Table 1 in water was applied to the corrosion resistant surface of the sex film. Next, it baked at 200 degreeC, and the hydrophilic film layer which consists of a resin composition was formed.

[0120] Finally, on the surface of the obtained hydrophilic film layer, use a bar coater so that the adhesion amount is 1.0 mg / dm 2 In this method, a coating composition cont...

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Abstract

The invention provides an aluminum fin material provided with a hydrophilic film in which a decrease in hydrophilicity accompanying adhesion of a volatile organic compound to a fin surface is suppressed while maintaining hydrophilicity for a long time. An aluminum fin material comprises, in order, an aluminum plate, and a hydrophilic film layer formed on the aluminum plate. The hydrophilic film layer comprises a resin composition having a resin A which is used as a polymer or a copolymer and a Zr-based crosslinking agent, wherein the polymer or copolymer of the resin A is composed of a monomer having at least one group selected from the group consisting of a sulfonic acid group, an alkali metal base of a sulfonic acid, and an ammonium salt base of a sulfonic acid.

Description

technical field [0001] The present invention relates to an aluminum fin material, and particularly relates to an aluminum fin material suitable for heat exchangers such as air conditioners. Background technique [0002] Heat exchangers are used in products in various fields such as room air conditioners, cabinet air conditioners, refrigerated display cases, refrigerators, oil coolers, and radiators. As a material for the fins of the heat exchanger, aluminum and aluminum alloys are generally excellent in thermal conductivity, workability, corrosion resistance, and the like. A plate-fin or plate-and-tube heat exchanger that has fins arranged at narrow intervals. [0003] When the surface temperature of the fins of the heat exchanger is below the dew point, dew condensation water will adhere to it. When the hydrophilicity of the surface of the fin is low, the contact angle of the adhering dew condensation water increases, so that splashing called water splashing occurs in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/24B05D1/36F28F21/06
CPCB05D5/00B05D7/24B05D7/54F28F21/067
Inventor 角田亮介馆山庆太
Owner KOBE STEEL LTD
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