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Chromate-free surface-treated metal material

A metal material and surface treatment technology, applied in the metal material coating process, the device for coating liquid on the surface, the anti-corrosion coating, etc., can solve the problem of insufficient corrosion resistance, safety and hygiene can not be used, never provide hydrophobic-oleophobicity , pollution resistance, solvent resistance, alkali resistance, corrosion resistance, non-chromate surface treatment of metal materials, etc., to achieve the effect of excellent corrosion resistance and easy manufacturing

Active Publication Date: 2011-10-26
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies on corrosion resistance have not been sufficiently conducted, and since organic solvents are used as solvents, there is a problem that it cannot be manufactured using conventional chromate coating equipment in terms of safety and sanitation.
In addition, in order to cure the resin film, it is necessary to bake at a high temperature, and there are problems from the viewpoint of productivity and energy efficiency.
[0007] In this way, the present situation is that there is no non-chromate surface-treated metal material that is excellent in all hydrophobic-oleophobic properties, stain resistance, solvent resistance, alkali resistance, and corrosion resistance.

Method used

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  • Chromate-free surface-treated metal material
  • Chromate-free surface-treated metal material
  • Chromate-free surface-treated metal material

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0137] The organosilicon compound and organic acid shown in Table 1 were added to water, and stirred at normal temperature to obtain an organosilicon compound aqueous liquid having a solid content concentration of 10% by mass.

manufacture example 2

[0139] The monomers, polymerization initiators, and organic solvents shown in Table 2 were mixed and replaced with nitrogen, and then polymerized while stirring at 65° C. for 16 hours to obtain a polymer solution with a solid content concentration of 20% by mass. Water and acetic acid were added to the obtained polymer solution, and stirred for 15 minutes to perform emulsification and dispersion. After the organic solvent was distilled off at 65° C. under reduced pressure, water was added so that the solid content concentration became 20% by mass, and an aqueous dispersion of an organic fluorine compound was obtained. Abbreviations in Table 2 have the following meanings.

[0140] C 4 FMA:CH 2 =C(CH 3 )COOC 2 h 4 C 4 f 9

[0141] C 6 FMA:CH 2 =C(CH 3 )COOC 2 h 4 C 6 f 13

[0142] DEAEMA: N,N-Diethylaminoethyl methacrylate

[0143] DMAEMA: N,N-Dimethylaminoethyl methacrylate

[0144] MAEO8:CH 2 =C(CH 3 ) COO (C 2 h 4 O) n H (average of n is 8)

[0145] 2M...

manufacture example 3

[0164] The monomer shown in Table 3, emulsifier (polyoxyethylene oleyl ether, polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer, stearyl trimethyl ammonium chloride), dipropylene glycol, n-decyl Dioxanethiol was mixed into water and stirred at 56°C for 30 minutes to obtain a mixed solution. The obtained mixed solution was stirred under high pressure at 40 MPa while maintaining the temperature at 50° C. to obtain an emulsion. After cooling the obtained emulsion to below 30°C, carry out nitrogen substitution, add polymerization initiator 2,2'-azobis[2-(2-imidazolin-2-yl)propane], acetic acid, and stir in The polymerization reaction was carried out at 55° C. for 12 hours to obtain an organic fluorine compound aqueous liquid having a solid content concentration of 20% by mass. Abbreviations in Table 3 have the following meanings.

[0165] C 6 FMA:CH 2 =C(CH 3 )COOC 2 h 4 C 6 f 13

[0166] C 6 FA: CH 2 =CHCOOC 2 h 4 C 6 f 13

[0167] C 8 FA: CH 2 =...

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PUM

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Abstract

Disclosed is a surface-treated metal material which does not contain hexavalent chromium that has a high environmental load, can be produced relatively readily, and has excellent stain-proof properties, solvent resistance, alkali resistance and corrosion resistance. Specifically disclosed is a chromate-free surface-treated metal material characterized by having a coating film formed thereon, wherein the coating film is produced by applying an aqueous treatment solution on the surface of a metal material and drying the aqueous treatment solution, wherein the aqueous treatment solution comprises an organosilicon compound (A) containing an alkylene group, a siloxane bond and a cross-linkable functional group represented by the formula -SiR1R2R3 (wherein R1, R2 and R3 independently represent an alkoxy group or a hydroxy group and at least one of R1, R2 and R3 may be substituted by a methyl group) and an organofluorine compound (B) containing a perfluoroalkyl group.

Description

technical field [0001] The present invention relates to a non-chromate surface-treated metal material that does not contain hexavalent chromium with high environmental load, is relatively easy to manufacture, and is extremely excellent in hydrophobicity-oleophobicity, stain resistance, solvent resistance, alkali resistance, and corrosion resistance . Furthermore, it relates to a non-chromate surface-treated metal material capable of simultaneously satisfying hydrophobicity-oleophobicity and adhesiveness. Background technique [0002] In various industries such as home appliances, automobiles, and building materials, for the purpose of imparting corrosion resistance, etc., chromic acid using chromate or the like is generally used on metal materials such as zinc-based plated steel sheets and aluminum-based plated steel sheets. Salt treatment technology. Chromate treatment is completed only by applying an aqueous solution containing chromic acid to a metal material and drying...

Claims

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Application Information

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IPC IPC(8): C23C22/34B05D7/24C09D5/08C09D7/12C09D133/16C09D183/04C23C22/36C23C22/44B05D7/14
CPCC09D5/08C09D4/00C09D5/4415C09D143/04C23C22/34C23C22/44C23C2222/20C08G77/04C08L2666/04
Inventor 森下敦司菊池郁夫
Owner NIPPON STEEL CORP
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