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Method for metal surface passivation

A passivation metal, oxidizing technology, applied in the direction of metal material coating process, etc., can solve the problem that the formation of passivation layer is not very ideal, etc.

Inactive Publication Date: 2014-03-26
常熟市大康汽车座垫有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Current methods of passivating metal surfaces are not ideal for forming a passivation layer on metal surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A method for passivating metal surfaces, comprising the steps of:

[0012] 1) Take 1 part by mass of quaternized polyethyleneimine, 1 part by mass of hydroxypropyl methylcellulose, 1 part by mass of polyethyleneimine, 1 part by mass of quaternized polyethyleneimine, and 1 part by mass of alkoxylated Polyethylene imine, 1 mass part of polyvinyl imidazole, 80 mass parts of water, 1 mass part of fatty alcohol polyoxyethylene ether, 2 mass parts of polyglycerol monostearate are mixed, and then add 20 mass parts of acrylic acid, vinyl A copolymer synthesized from phosphonic acid and hydroxyethyl acrylate to obtain a treatment solution with a pH value of 2.3;

[0013] 2) Apply the treatment solution to the metal surface as a wet film.

Embodiment 2

[0015] A method for passivating metal surfaces, comprising the steps of:

[0016] 1) Take 2 parts by mass of quaternized polyethyleneimine, 2 parts by mass of hydroxypropyl methylcellulose, 2 parts by mass of polyethyleneimine, 2 parts by mass of quaternized polyethyleneamine, and 2 parts by mass of alkoxylated Polyethyleneimine, 2 parts by mass of polyvinyl imidazole, 80 parts by mass of water, 2 parts by mass of fatty alcohol polyoxyethylene ether, and 2-3 parts by mass of polyglycerol monostearate are mixed, and then 60 parts by mass of acrylic acid, A copolymer synthesized from vinylphosphonic acid and hydroxyethyl acrylate to obtain a treatment solution with a pH value of 2.5;

[0017] 2) Apply the treatment solution to the metal surface as a wet film.

Embodiment 3

[0019] A method for passivating metal surfaces, comprising the steps of:

[0020] 1) Take 1.2 parts by mass of quaternized polyethyleneimine, 1.2 parts by mass of hydroxypropyl methylcellulose, 1.2 parts by mass of polyethyleneimine, 1.2 parts by mass of quaternized polyethyleneamine, and 1.2 parts by mass of alkoxylated Polyethyleneimine, 1.2 parts by mass of polyvinyl imidazole, 80 parts by mass of water, 1.2 parts by mass of fatty alcohol polyoxyethylene ether, and 2.3 parts by mass of polyglycerol monostearate are mixed, and then 40 parts by mass of acrylic acid, vinyl A copolymer synthesized from phosphonic acid and hydroxyethyl acrylate to obtain a treatment solution with a pH value of 2.4;

[0021] 2) Apply the treatment solution to the metal surface as a wet film.

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Abstract

The invention discloses a method for metal surface passivation, and the method comprises the following steps: 1) mixing, by mass, 1-2 parts of quaternized polyethylenimine, 1-2 parts of hydroxypropyl methyl cellulose, 1-2 parts of polyethyleneimine, 1-2 parts of quaternized polyvinylamine, 1-2 parts of alkoxylated polyethyleneimine, 1-2 parts of polyvinyl imidazole, 80 parts of water, 1-2 parts of fatty alcohol-polyoxyethylene ether and 2-3 parts of polyglycerol monostearate, then adding 20-60 parts of a copolymer synthesized by acrylic acid, vinyl phosphonic acid and hydroxyethyl acrylate to produce a conditioning fluid with the pH value of 2.3 - 2.5; and 2) applying a metal surface with the conditioning fluid in a manner of a wet film. By the method for the metal surface passivation, a fully crosslinkedstable passivation film coating layer is formed on the metal surface.

Description

technical field [0001] The present invention relates to methods of passivating metal surfaces. Background technique [0002] The current methods for passivating metal surfaces are not ideal for forming a passivation layer on the metal surface. Contents of the invention [0003] The purpose of the present invention is to provide a method for passivating the metal surface, forming a fully cross-linked and stable passivation coating layer on the metal surface. [0004] To achieve the above object, the technical solution of the present invention is to design a method for passivating metal surfaces, comprising the steps of: [0005] 1) Take 1-2 parts by mass of quaternized polyethyleneimine, 1-2 parts by mass of hydroxypropyl methylcellulose, 1-2 parts by mass of polyethyleneimine, and 1-2 parts by mass of quaternized polyethyleneamine , 1-2 parts by mass of alkoxylated polyethyleneimine, 1-2 parts by mass of polyvinyl imidazole, 80 parts by mass of water, 1-2 parts by mass o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/48
Inventor 李惠军
Owner 常熟市大康汽车座垫有限责任公司
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