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Surface-treating composition, and surface-treated steel sheet

A technology of surface treatment and composition, which is applied in the field of surface treatment steel plates, can solve the problems of impossible surface treatment of steel plates and poor appearance, and achieve excellent adhesion, heat discoloration resistance, excellent scratch resistance, and excellent heat resistance discoloration effect

Inactive Publication Date: 2012-09-12
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology provides improved treatments for surfaces made by applying special compositions containing certain ingredients like silicon dioxide (SiO2), aluminum oxynitride (AlON), calcium carbonates, zinc sulfite clay, magnesium hydroxyphosphoruminate, boron nitrate, iron phthalocyanine blue pigment, polyethyleneimmyboxamides, polysiloxanes, polymers, acrylic acid ester copolymers, vinyl alcohol soluble monomers, ammonia gas generating agents, urease enzymes, cellulose derivatives, chlorophylls, dyes, antiozonants, UV light absorbers, lubricant oil droplets, water vapor carrying substances, oxygen scavengers, antiwear coatings, chemical bonding layers between different materials, and other technical improvements related thereto.

Problems solved by technology

Technological Problem addressed in these technical problem areas includes improving the durability and weld color retention characteristics of tin plates without relying solely upon chrome conversion coatings alone, while also avoiding the issue of excessive wear debris caused during production processes.

Method used

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  • Surface-treating composition, and surface-treated steel sheet
  • Surface-treating composition, and surface-treated steel sheet
  • Surface-treating composition, and surface-treated steel sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0139] The titanium-containing aqueous solution (A) and components (B) to (G) used in the surface treatment composition are shown below.

[0140][Manufacture of titanium-containing aqueous solution (A)]

manufacture example 1

[0141] Manufacturing example 1 (titanium-containing aqueous solution T1)

[0142] 5 ml of a 60% by mass titanium tetrachloride solution was adjusted to 500 ml with distilled water, and ammonia water (ammonia:water mass ratio: 1:9) was added dropwise to the resulting solution to precipitate low-condensation products of titanium hydroxide. After washing with distilled water, 10 ml of a 30% by mass hydrogen peroxide aqueous solution was added and stirred to obtain a titanium-containing yellow translucent, viscous titanium-containing aqueous solution T1.

manufacture example 2

[0143] Manufacturing example 2 (titanium-containing aqueous solution T2)

[0144] A mixture of 10 parts by mass of titanium tetraisopropoxide and 10 parts by mass of isopropanol was added dropwise to 10 parts by mass of a 30 mass % hydrogen peroxide aqueous solution and 100 parts by mass of in a mixture of deionized water. Then, it was aged at 25°C for 2 hours to obtain a transparent yellow, slightly viscous titanium-containing aqueous solution T2.

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PUM

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Abstract

Disclosed is a surface-treating composition having excellent corrosion resistance, thermal discoloration resistance, blackening resistance, scratch resistance, post-processing adhesion to an organic resin layer that is formed thereon, and adhesion under high-temperature high-humidity environments. The surface-treating composition comprises (A) an aqueous titanium-containing solution produced by mixing at least one titanium compound selected from a hydrolysable titanium compound, a low-condensed product of a hydrolysable titanium compound, titanium hydroxide and a low-condensed product of titanium hydroxide with aqueous hydrogen peroxide, (B) a zirconium carbonate compound, (C) an organic phosphoric acid compound, (D) a metal phosphate salt, (E) silicon oxide, (F) a water-soluble organic resin and/or a water-dispersible organic resin, and (G) a silane coupling agent at a specified proportion.

Description

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Claims

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Application Information

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Owner JFE STEEL CORP
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