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Oil-free antirust and blackening agent and its preparation method and application

A technology of blackening agent and oil immersion, which is applied in the direction of anti-corrosion coating, coating, epoxy resin coating, etc., and can solve the problems of not meeting the anti-rust requirements and increasing the complexity of operation

Active Publication Date: 2021-10-08
HUNAN JINHUA SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above process that after blackening the cast iron, in order to prevent the surface of the workpiece from rusting, it is necessary to immerse it in another solvent for antirust treatment. That is to say, the existing blackening agent cannot Afterwards fully meet the anti-rust requirements, which increases the complexity of the operation

Method used

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  • Oil-free antirust and blackening agent and its preparation method and application
  • Oil-free antirust and blackening agent and its preparation method and application
  • Oil-free antirust and blackening agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] component name parts by weight Copper chloride 1 Potassium tungstate 2 ammonium thiosulfate 1 Waterborne Epoxy Modified Acrylic Resin Dispersion 80 Aqueous Polyaniline Dispersion 20 citric acid 5 oxalic acid 2 Disodium Hydroxyethylidene Diphosphonate 0.5

[0020] Among the components used above, the aqueous epoxy-modified acrylic resin dispersion can be commercially available raw materials, preferably with a solid content of 45%. The water-based polyaniline dispersion can also choose commercially available raw materials, preferably the effective content of polyaniline is 30%, and the remaining components are dispersant and water.

Embodiment 2

[0022] Embodiment 2 is compared with embodiment 1, only the proportioning of each component changes to some extent, and the proportioning of each component in embodiment 2 is as follows:

[0023]

[0024]

Embodiment 3

[0026] Embodiment 3 compares with embodiment 1 and 2, only the mass percent distribution ratio of each component changes, and the proportioning of each component in embodiment 3 is as follows:

[0027] component name parts by weight Copper chloride 10 Potassium tungstate 20 ammonium thiosulfate 8 Waterborne Epoxy Modified Acrylic Resin Dispersion 50 Aqueous Polyaniline Dispersion 5 citric acid 20 oxalic acid 25 Disodium Hydroxyethylidene Diphosphonate 5

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Abstract

The oil-free anti-rust and blackening agent and its preparation method and application relate to the technical field of metal surface treatment, wherein the above-mentioned oil-free anti-rust and blackening agent comprises the following components: 1-20 parts by weight of copper chloride, tungsten Potassium acid 2-30 parts by weight, ammonium thiosulfate 1-15 parts by weight, water-based epoxy modified acrylic resin dispersion 50-300 parts by weight, water-based polyaniline dispersion 5-50 parts by weight, citric acid 5-50 parts by weight 2-50 parts by weight of oxalic acid, 0.5-10 parts by weight of disodium hydroxyethylidene diphosphonate and appropriate amount of deionized water. After using the oil-free antirust blackening agent for blackening treatment, it can meet the antirust performance requirements in most cases even without oil immersion treatment.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to an oil-free antirust and blackening agent and its preparation method and application. Background technique [0002] Blackening treatment is a surface treatment technology, which is used to improve the corrosion resistance of the material surface, and the blackening agent is a chemical preparation to realize the blackening treatment of steel. [0003] The normal temperature blackening of the steel surface is to form a black oxide film without changing the dimensional accuracy of the workpiece to be processed, but most blackening agents contain phosphorus, selenium, nitrite and other polluting substances or the process is complicated and the cost is high. Conventional blackening treatment construction process: degreasing treatment → water washing → rinsing → normal temperature steel blackening agent treatment → stabilization → water washing → dipping in anti-rust oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D163/00C09D5/08C09D7/61C09D7/63C09D7/65
CPCC09D5/08C09D133/04C09D7/61C09D7/63C09D7/65C08L63/00C08L79/02C08K13/02C08K3/16C08K3/24C08K3/30C08K5/092C08K5/5317
Inventor 任振兴彭庆华彭云唐鹏飞赵端泉
Owner HUNAN JINHUA SCI & TECH GRP
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