Zinc coated steel plate with excellent alkali resistance and solvent resistance

A solvent-resistant, galvanized steel technology, applied to the surface coating liquid device, coating, special surface, etc., can solve problems such as peeling off, protective film discoloration, etc., achieve excellent alkali resistance, simplify processing procedures, The effect of good corrosion resistance

Active Publication Date: 2007-01-03
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the protective film on the surface of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Embodiment: Embodiment 1~9 of the present invention, comparative example 1~6 implementation situation is as follows:

[0033] The following examples use electro-galvanized, hot-dip galvanized and hot-dip galvanized aluminum alloy steel sheets, but the scope of the present invention is not limited by these specific examples. The galvanized steel sheets used in Examples and Comparative Examples, their surface cleaning methods, surface treatment agents, and performance testing will be described below.

[0034] 1. Test sample

[0035] (a) Products sold in the market, plate thickness 0.6mm, double-sided electrogalvanized steel plate (EG), coating adhesion amount 20g / m 2

[0036] (b) Products sold in the market, plate thickness 0.6mm, hot-dip galvanized steel plate (GI), coating adhesion amount 40g / m 2

[0037] (c) Products sold in the market, plate thickness 0.6mm, hot-dip galvanized aluminum alloy steel plate (GF), coating adhesion amount 40g / m 2

[0038] 2. Cleaning ...

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PUM

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Abstract

The present invention relates to zinc coated steel plate possessing compound organic protecting film with excellent alkali resistance and solvent resistance. The protecting film consists of fluoric acid with 4 or more fluorine atoms and at least one of Ti, Zr and Si atome in 0.1-5.0 wt%; phsosphorus containing compounding 0.01-0.5 wt%; one or more organic silicon coupling agent with amino group containing at least one active hydrogen atom 10-20 wt%, one or more organic silane coupling agent with at least one epoxy group 25-50 wt%; at least one kind of cationic or non-ionic water soluble polyurethane resin 30-60 wt% and vanadium compound 0.1-1.0 wt%. The zinc coated steel plate possesses excellent alkali resistance and solvent resistance as well as excellent corrosion resistance, fingerprint resistance, paint attaching performance, etc.

Description

technical field [0001] The invention relates to a galvanized steel sheet, the surface of which not only has excellent alkali resistance and solvent resistance, but also has excellent corrosion resistance, fingerprint resistance, coating adhesion and other properties. Background technique [0002] Galvanized steel sheets are widely used in various fields such as automobiles, building materials, and home appliances. However, these metal materials are easily corroded in the atmospheric environment and form white rust because they contain components such as zinc and aluminum. This phenomenon not only affects the appearance of the galvanized steel sheet, but also adversely affects the paint adhesion. In order to improve corrosion resistance and coating adhesion, passivation treatment is usually performed on the galvanized surface, and most of the treatment agents currently used contain chromic acid, dichromic acid or their salts. [0003] In rec...

Claims

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Application Information

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IPC IPC(8): B05D5/08B05D7/14C09D175/04
CPCC23C2222/20
Inventor 倪富荣中村充袁江南森田良治吴志良李平
Owner BAOSHAN IRON & STEEL CO LTD
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