Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Aquo-chromium-free surface treatment liquid for galvanized steel plate

A surface treatment liquid and treatment liquid technology, applied in the direction of metal material coating process, etc., can solve the problems of decreased salt spray resistance, easy failure, mutagenesis, etc., and achieve the effect of improving stability

Active Publication Date: 2013-02-27
CHINA NAT OFFSHORE OIL CORP +1
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Galvanizing is an effective method to improve the atmospheric corrosion resistance of steel, but in a humid environment, the galvanized layer is prone to corrosion and must be pretreated
At present, the most widely used is chromate passivation treatment, but the passivation film formed after chromate treatment contains hexavalent chromium ions, and hexavalent chromium is easily absorbed by the human body, and has mutagenic and carcinogenic effects
[0004] At present, the water-based chromium-free treatment solutions mainly include molybdate, tungstate, rare earth metal salt, acrylic resin and organosilane system, among which the organosilane system has the best corrosion resistance, which is equivalent to chromate, but there are also defects. , the existing silane system treatment liquid has poor stability, is prone to failure after being placed, and the salt spray resistance performance is significantly reduced; and the coating process is demanding, the curing time is long, and the curing temperature is relatively high, which is not suitable for industrial production.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aquo-chromium-free surface treatment liquid for galvanized steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The composition of the metal surface treatment liquid is as follows:

[0026] Bistriethanolamine diisopropyl titanate: 5g / L

[0027] Mixed silane (n Methyltriacetoxysilane :n γ-Aminopropyltriethoxysilane =1:3): 100 g / L

[0028] Ce(NO 3 ).6H 2 O: 1.5 5g / L

[0029] Deionized water: balance

Embodiment 2

[0031] The composition of the metal surface treatment liquid is as follows:

[0032] Bistriethanolamine diisopropyl titanate: 25g / L

[0033] Mixed silane (n Methyltriacetoxysilane :n γ-Aminopropyltriethoxysilane =1:3): 100 g / L

[0034] Ce(NO 3 ).6H 2 O: 1.55g / L

[0035] Deionized water: balance

Embodiment 3

[0037] The composition of the metal surface treatment liquid is as follows:

[0038] Bistriethanolamine diisopropyl titanate: 50g / L

[0039] Mixed silane (n Methyltriacetoxysilane :n γ-Aminopropyltriethoxysilane =1:3): 100 g / L

[0040] Ce(NO 3 ).6H 2 O: 1.55g / L

[0041] Deionized water: balance

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an aquo-chromium-free surface treatment liquid for a galvanized steel plate. The treatment liquid is characterized by comprising A) ethanolamine titanate, B) a mixed silane coupling agent, C) Zr<2+>, Ce<3+>, Mo<6+>, divalent or high-valence metal ions and D) deionized water. A usage method of the surface treatment liquid is as below: roller coating, dip coating, spraying coating or scraping coating is employed to fully immerse the treatment liquid with the galvanized plate; and the galvanized plate is cured at 60-80 DEG C for 10-20 S by a drying device.

Description

Technical field [0001] The invention belongs to the technical field of surface treatment of metal materials, and is an aqueous chromium-free surface treatment solution for galvanized series steel sheets; in particular, it relates to an aqueous chromium-free surface treatment solution that can effectively improve the corrosion resistance of galvanized series steel sheets. The treatment liquid does not contain toxic chromium ions and is an environmentally friendly product. [0002] Background technique [0003] Galvanizing is an effective method to improve the resistance of steel to atmospheric corrosion, but in a humid environment, the galvanized layer is prone to corrosion and must be pretreated. At present, the most widely used chromate passivation treatment, but the passivation film formed after chromate treatment contains hexavalent chromium ions, and hexavalent chromium is easily absorbed by the human body and has mutagenic and carcinogenic effects . [0004] At present, wat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C22/68
Inventor 叶学海刘红光张春丽张晓波傅春明于晓微
Owner CHINA NAT OFFSHORE OIL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com