Non-chromium pretreating agent for color coated steel plate

A color-coated steel plate and pretreatment agent technology, which is applied in the coating process of metal materials, can solve problems such as serious harm to the human body and the environment, and achieve the effects of improving corrosion resistance, preventing intrusion, and improving precision and uniformity

Inactive Publication Date: 2009-12-16
武钢集团有限公司
View PDF0 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low cost and simple process of chromate treatment, it has been widely used. However, hexavalent chromium is a serious carcinogen and has serious harm to the human body and the environment. With the enhancement of people's environmental aware...

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
  • Non-chromium pretreating agent for color coated steel plate
  • Non-chromium pretreating agent for color coated steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: 3g polyacrylic acid, 1g sodium molybdate, 1g sodium chlorate, 1g sodium fluoride, 1g fluorotitanic acid, 1g titanium trichloride, 1g zinc phosphate, 3g sodium hexametaphosphate, 1g sodium dihydrogen phosphate Dissolve in 100 g deionized water and stir to form a solution.

Embodiment 2

[0024] Embodiment 2: with 3g phytic acid, 1g polyacrylic acid, 1g sodium molybdate, 1g sodium chlorate, 1g sodium fluoride, 1g fluotitanic acid, 1g titanium trichloride, 2g zinc phosphate, 3g sodium hexametaphosphate, 1g Dissolve sodium dihydrogen phosphate in 100 g of deionized water, and stir to form a solution.

Embodiment 3

[0025] Embodiment 3: with 1.5g phytic acid, 1.5g polyacrylic acid, 1g sodium molybdate, 1g sodium chlorate, 1g sodium fluoride, 1g fluotitanic acid, 1g titanium trichloride, 2g zinc phosphate, 3g sodium hexametaphosphate , Dissolve 1g of sodium dihydrogen phosphate in 100g of deionized water, and stir to form a solution.

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 discloses a non-chromium pretreating agent for a color coated steel plate, which is a solution prepared by mixing solute formed by multiple substances with deionized water according to the weight percentage of 1:4 to 7, wherein the solute includes the following substances by weight percentage: 0 to 10 percent of organic carboxylic acid containing 4 to 18 carbon atoms or water soluble salt thereof, 5 to 30 percent of organic polymer with molecular weight ranging from 3000 to 200000, 10 to 15 percent of salt with oxidation capacity, 15 to 60 percent of inorganic fluorochemical with the function of complexation, 5 to 10 percent of high valence state titanium salt, 5 to 15 percent of inorganic zinc salt and 5 to 30 percent of inorganic phosphate. The pretreating agent of the invention does not include substances harmful to the environment and human bodies, such as high valence chromate, and the like; meets the RoHs requirement, and belongs to environment-friendly green products. Proved by experiments, the product of the invention can greatly improve the binding force between a coating and a galvanized plate, and can enhance the decay resistance of the coating.

Description

technical field [0001] The invention belongs to the field of steel production, in particular to a chromium-free pretreatment agent for color-coated steel sheets. Background technique [0002] The color-coated steel plate needs to be pretreated on the galvanized substrate before painting. The pretreatment process includes two parts. First, use a degreasing agent to clean the surface of the galvanized sheet to remove impurities and oil on the surface of the steel sheet, and then galvanized The surface of the board is coated with a pretreatment agent to produce a conversion film. The main purpose of the pretreatment of the galvanized sheet is to improve the bonding force between the coating in the color-coated steel sheet and the galvanized sheet, and at the same time improve the corrosion resistance of the color-coated steel sheet. [0003] At present, most domestic enterprises use chromate pretreatment agents for color-coated steel sheets. After chromate pretreatment, a chem...

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): C23C22/36C23C22/44
Inventor 陈勇涂元强黄春燕邱碧涛
Owner 武钢集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap