Composition for metal surface treatment, metal surface treatment method and coating method of metal material

A metal surface treatment and metal material technology, applied in the direction of metal material coating process, etc., can solve the problems of inability to obtain corrosion resistance, insufficient coating film adhesion, etc.

Active Publication Date: 2011-04-27
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when any of the surface treatment compositions described above is used, corrosion resistance equivalent to that of chromate treatment or zinc phosphate treatment cannot be obtained, and adhesion to the coating film formed by the finishing process after treatment may not be obtained. insufficient

Method used

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  • Composition for metal surface treatment, metal surface treatment method and coating method of metal material
  • Composition for metal surface treatment, metal surface treatment method and coating method of metal material
  • Composition for metal surface treatment, metal surface treatment method and coating method of metal material

Examples

Experimental program
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Effect test

manufacture example 1

[0079] In a 1L round bottom flask equipped with a reflux condenser, a thermometer, a nitrogen inlet tube, and a stirrer, add 200 g of isopropanol and 200 g of deionized water, and start stirring. Nitrogen gas was supplied in a gaseous phase, and 90 g of 3-aminopropyltrimethoxysilane and 10 g of bis(triethoxysilyl)ethane were thrown in at once while stirring. After stirring at normal temperature for 1 hour, the mixture was reacted at 60°C for 6 hours, and then the fraction was removed, and the temperature was raised to 120°C while exchanging with propylene glycol monomethyl ether. After cooling to 60° C., it was concentrated by vacuum distillation to obtain 120 g of a product (P1) of a solution having a non-volatile content of 40%. The obtained product (P1) was a colorless transparent viscous liquid with a non-volatile content of 40%.

manufacture example 2～12

[0081] Except that in Production Example 1, the raw material composition was as shown in Table 1, it carried out similarly to Production Example 1, and each product (P1)-(P8) and (R1)-(R4) was obtained.

[0082]

Embodiment 1～26 and comparative example 1～4

[0084] Production of compositions for metal surface treatment

[0085] In (P1) to (P8) and (R1) to (R4) prepared above, use fluozirconic acid, fluotitanic acid, and nitrates of each metal, etc., to adjust the combination for metal surface treatment with the composition shown in Table 2. thing. In Table 2, the concentration of each metal component is expressed in terms of metal elements, and the other component concentrations represent the solid content concentration.

[0086] Chemical conversion treatment and finishing

[0087] Commercially available cold-rolled steel sheets (SPCC-SD, manufactured by Testpanel Corporation of Japan, 70mm×150mm×0.8mm), galvanized steel sheets (GA steel sheets, manufactured by Testpanel Corporation of Japan, 70mm×150mm×0.8mm), 5000 series Aluminum (manufactured by Japan Testopanel Corporation, 70mm × 150mm × 0.8mm) or 6000 series aluminum (manufactured by Japan Testopanel Corporation, 70mm × 150mm × 0.8mm) was used as a base material, and t...

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Abstract

The present invention relates to a composition for metal surface treatment, a metal surface treatment method and a coating method of metal material. An aim of the invention is to provide the composition for metal surface treatment, the metal surface treatment method and the coating method of metal material, wherein composition can obtain corrosion resistance equivalent with chromate treatment or phosphate treatment and can form a coating film with excellent adhesiveness of the coating film formed through a coating step after treatment. The composition for metal surface treatment comprises the following components: (A) titanium compound and/or zirconium compound, and (B) condensation reactant of (b1) amino silane and (b2) polysilyl functional silane.

Description

technical field [0001] The invention relates to a metal surface treatment composition, a metal surface treatment method and a metal material coating method. Background technique [0002] Conventionally, in order to improve the corrosion resistance of metal surfaces, chromate treatment and phosphate treatment are generally performed. However, in recent years, the toxicity of chromium has become a social problem. The surface treatment method using chromate also has the problem of scattering chromate fumes during the treatment process, the high cost of wastewater treatment equipment, and the chemical transformation of chromic acid. Problems caused by dissolution in the treated film, etc. [0003] In addition, in phosphate treatment, zinc phosphate-based and iron phosphate-based surface treatments are usually performed, and in order to impart corrosion resistance, chromic acid is usually used for rinsing treatment after phosphate treatment, so there is a problem with chromium t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23C22/36C23C22/74C23C22/80
Inventor 永井彰典芦田康成山本真人
Owner KANSAI PAINT CO LTD
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