Coating metal with excellent heat diffusion character

A technology of coating and metal materials, which is applied in the field of coated metals, can solve problems such as inability to exert heat dissipation characteristics, and achieve excellent heat dissipation characteristics, reduced electrical impedance, and good conductivity

Inactive Publication Date: 2006-10-18
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, even when the film raw material described in JP-A-2001-313009 is used as the coating film raw material according to the intention of the present invention, the heat dissipation characteristic expected in the present invention cannot be exhibited.

Method used

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  • Coating metal with excellent heat diffusion character
  • Coating metal with excellent heat diffusion character
  • Coating metal with excellent heat diffusion character

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0064] The integrated infrared emissivity described above is hardly affected by the structure of the outermost coating film containing porous particles, and is almost clearly determined by the structure of the lower coating film containing the radioactive additive. Therefore, in the preferred form of the present invention that combines the undercoat film and the outermost coat film, the integrated emissivity of the undercoat film and the heat dissipation effect produced by the convective heat conduction of the outermost coat film will be brought into play. Thermal properties.

[0065] Carbon black is most preferable as the radioactive additive formulated in the undercoat film. Others can also use oxides, sulfides, carbides, etc. of Co, Ni, Cu, Mn, Ag, Sn, etc., and TiO can also be used. 2 , ceramics, iron oxide, aluminum oxide, barium sulfate, silicon oxide, etc. The preferred compounding amount of these radioactive additives is 1% by mass or more, more preferably 2% by mass...

Embodiment

[0085] Chromate-treated electro-galvanized steel sheet (thickness: 0.8mm, Cr deposition amount: 20mg / m 3 ) is used as an original plate, and the coating compounded with the additives shown in the following Table 1 is applied on one side (polyester-based resin is used as the base resin, and melamine resin is used as the cross-linking agent), and then baked and dried to form Undercoat film.

[0086] Next, a polyester-based resin prepared with fine particles shown in Table 1 was coated thereon, and then baked and dried to form an outermost coating film. In this polyester-based resin, a large amount of porous silica (Mizusawa Chemical Co., Ltd. (trade name "Mizukasil P-707" manufactured by Japan Chemical Industry Co., Ltd.), or a large amount of zeolite (trade name "Zeostar KA-100P" manufactured by Nihon Kagaku Co., Ltd.) with surface openings and pores with a diameter of about 0.3 nm, and dried in the coating film The ratio becomes 10% by mass.

[0087] For each of the obtaine...

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Abstract

PROBLEM TO BE SOLVED: To provide a coated metal material excellent in radiation properties and useful as the material of a casing for housing an electronic device having a heat source built therein (including an electric device or optical device having the heat source built therein) or the like, and an electronic device component using the coated metal material.

SOLUTION: The coated metal material excellent in radiation properties is a coated metal member constituted by forming at least one resin coating film on one side or both sides of a metal base material and characterized in that the outermost layer of the coated metal member contains porous particles having pores with a pore size of 1-1,000 nm opened to their surfaces in a state at least partial exposed from the surface of the outermost layer and a coating film layer containing a radiant additive is preferably formed on the under layer side of the outermost layer.

COPYRIGHT: (C)2007,JPO&INPIT

Description

technical field [0001] The present invention relates to a coated metal excellent in heat dissipation, and in particular to a raw material for a case (casing) of an electronic device containing a built-in heat source (electrical device and optical device including a built-in heat source, the same below), Useful heat dissipation excellent coated metal material. Background technique [0002] In recent years, with the advancement of high performance and miniaturization of electronic equipment, etc., there has been a problem that the internal temperature of the equipment has risen due to heat from the inside of the electronic equipment, etc., and there is concern that it may exceed the IC, CPU (semiconductor element) , disks, motors, etc., may cause malfunctions in stable operation. In addition, if the internal temperature of the electronic equipment rises, it may also cause damage or failure of the semiconductor element, which may shorten the life of the electronic equipment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00B05D7/14
CPCB32B15/08B32B15/09C09D7/40C09D201/00
Inventor 平野康雄渡濑岳史
Owner KOBE STEEL LTD
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