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Surface-treated metal plate

A surface treatment and metal plate technology, which is applied in the direction of metal layered products, metal material coating process, coating, etc., can solve the problems of poor adhesion of coating film, white rust, sag, etc., and achieve excellent coating performance and pull Excellent effect of deep processing

Inactive Publication Date: 2009-05-20
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although coating-treated steel sheets based on inorganic polymers have the effect of improving damage resistance and the occurrence of coating blackening during drawing, they have the following problems: coatings such as dents that occur when the solution is applied to the steel sheet are likely to occur. Defects, due to the high water permeability of the coating, it is easy to produce black spot rust or white rust, and the adhesion of the coating film after coating is poor

Method used

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Examples

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Effect test

preparation example Construction

[0100] (2) Preparation of aqueous resin dispersion and method of forming resin film

[0101] In the production of the surface-treated metal sheet (resin film) of the present invention, an aqueous resin dispersion obtained by dispersing the above-mentioned film-forming resin composition in water or a solvent containing water as a main component is used. In the aqueous resin dispersion used in the present invention, in order to improve the formability of the resin coating film and the physical properties of the obtained film, a diluent solvent, an anti-skinning agent, and a leveling agent may also be included within the range that does not hinder the purpose of the present invention. , defoamer, penetrating agent, emulsifier, film-forming aid, coloring pigment, tackifier and lubricant, etc.

[0102] The method for preparing the above-mentioned resinous dispersion liquid is not particularly limited, and it can be prepared by mixing a predetermined amount of silica particles, a si...

Embodiment

[0112] Hereinafter, the present invention will be described in detail through examples, but the present invention is not limited to the following examples, and changes and embodiments that do not depart from the gist of the present invention are included in the scope of the present invention. The evaluation methods used in the examples are as follows.

[0113] (1) Corrosion resistance

[0114] The obtained surface-treated metal sheet (resin-coated steel sheet) was subjected to the salt spray test of the flat plate after edge sealing according to JIS-Z2371 (11.1 Neutral salt spray test), and the amount of white rust generation was evaluated according to the following evaluation criteria: The time when 5% of the area of ​​the plate.

[0115] (evaluation standard)

[0116] ◎: White rust occurs for more than 240 hours

[0117] ○: White rust occurs for more than 120 hours to less than 240 hours

[0118] △: White rust occurs for more than 72 hours to less than 120 hours

[0119...

manufacture example 1

[0158] Production Example 1 Preparation of Acrylic Urethane Resin Aqueous Dispersion (H-MDI Urethane Acrylic Resin)

[0159] In a pressurized corresponding synthesis apparatus having a stirrer, a heating heater, a thermometer, and a temperature controller with an internal capacity of 1.0 kg, 24.3 g of dimer acid, trimethylolpropane, and diethylene glycol were charged as polyol components. Diol-formed polyester polyol (“TA22-636”, manufactured by Hitachi Chemical Polymer Co., Ltd.), 3.89 g of 1,4-cyclohexanedimethanol, 22.52 g of dimethylolpropionic acid, 8.82 g of dihydroxyacetone ( Merck Ltd., manufactured in JAPAN), to which was added a reaction solvent 96.01 g mixed with 370.01 g of butyl acrylate, 370.01 g of n-butyl methacrylate, 13.32 g of diacetone acrylamide, 13.32 g of methyl ethyl ketone, and 1.51 g of p-hydroxyanisole. g. Stir to make the whole system uniformly dispersed.

[0160] Then, after adjusting the mixed solution of the above-mentioned polyol and acrylic mo...

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Abstract

The invention relates to a surface treatment metal plate with the surface of the metal plate being provided with a resin capsule, wherein, the resin capsule is formed by the following resin capsule forming composites, which contain 30-50 proportion by weight of acrylic acid urethane resin and 50-70 proportion by weight of silica particles with an average particle size of 4-20nm, and the total proportion by weight of the acrylic acid urethane resin and the silica particle is 100, and also contain 5-25 proportion by weight of silane coupling agent according to the total 100 proportion by weightof the acrylic acid urethane resin and the silica particle. The composition leads the metal plate to have corrosion resistance, deep drawing processability and excellent coating performance.

Description

technical field [0001] The present invention relates to a deep drawing (Japanese: deep ri) An excellent surface-treated metal sheet, more specifically, relates to a surface-treated metal sheet suitable for deep-drawn products used in automobiles, home appliances, and building materials, such as audio stands, computer cases, motor cases, and pulleys. Background technique [0002] As materials used for components of home appliances, galvanized steel sheets such as electro-galvanized steel sheets or hot-dip galvanized steel sheets are often used, and chromate treatment or phosphate treatment is performed on the galvanized steel sheets to further improve corrosion resistance and paintability. Inorganic coating-treated steel sheet obtained by chemical conversion treatment such as treatment. In addition, a resin-coated steel sheet in which an organic resin film is formed on a chromate-treated surface-treated steel sheet to further improve corrosion resistance, paintability, and ...

Claims

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Application Information

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IPC IPC(8): B32B15/082B32B27/20C23C26/00C09D175/04C09D133/04
CPCC23C2222/20C09D175/00C23C2/06C23C22/48C25D3/22
Inventor 梶田富男山本佳代高松达也山村健太郎菊池纪行秋本干夫
Owner KOBE STEEL LTD
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