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Stainless steel surface hydrophilic treatment method

A hydrophilic treatment, stainless steel technology, applied in the direction of metal material coating process, can solve the problems of unfavorable large-area steel surface treatment, harsh treatment conditions, etc., and achieve a simple and convenient preparation method, good wettability, and high controllability Effect

Inactive Publication Date: 2019-11-08
SHENZHEN TIANDEYI ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a method for hydrophilic treatment of stainless steel surface, to solve the problem in the prior art that the treatment conditions are harsh and unfavorable for large-area steel surface treatment when carrying out hydrophilic treatment of stainless steel surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Clean the stainless steel plate with alkali cleaning solution (sodium hydroxide 10.0g / L, sodium carbonate 10.0g / L, detergent powder 10.0g / L) for 20min, water for 5min, acid cleaning solution (2.0% hydrochloric acid and 10.0g / L L potassium permanganate mixed solution) for 20 minutes and water for 5 minutes.

[0030] Then evenly brush 10.0mL 0.1mol / L Agent A on the surface of the cleaned stainless steel plate, and let it stand for 20min to react. Then evenly brush 10.0mL 0.2mol / L Agent B on the surface of the stainless steel plate, and let it stand for 20min to react. In this embodiment, agent A is disodium edetate solution, and agent B is ferric chloride solution.

[0031] Finally, rinse the surface of the stainless steel plate with water, and after drying, the contact angle θc between the surface of the stainless steel plate and the water droplet is tested <10°, which shows that the surface of the stainless steel plate has very good hydrophilic properties.

Embodiment 2

[0033] Clean the stainless steel plate with alkali cleaning solution (sodium hydroxide 10.0g / L, sodium carbonate 10.0g / L, detergent powder 10.0g / L) for 20min, water for 5min, acid cleaning solution (2.0% hydrochloric acid and 10.0g / L L potassium permanganate mixed solution) for 20 minutes and water for 5 minutes.

[0034] Then evenly brush 10.0mL 0.1mol / L Agent A on the surface of the cleaned stainless steel plate, and let it stand for 20min to react. Then evenly brush 10.0mL 0.2mol / L Agent B on the surface of the stainless steel plate, and let it stand for 20min to react. In this embodiment, agent A is a mixed solution composed of phytic acid and disodium edetate, and agent B is ferric sulfate solution.

[0035] Finally, rinse the surface of the stainless steel plate with water, and after drying, the contact angle θc between the surface of the stainless steel plate and the water droplet is tested <10°, which shows that the surface of the stainless steel plate has very good h...

Embodiment 3

[0037] Clean the stainless steel plate with alkali cleaning solution (sodium hydroxide 10.0g / L, sodium carbonate 10.0g / L, detergent powder 10.0g / L) for 20min, water for 5min, acid cleaning solution (2.0% hydrochloric acid and 10.0g / L L potassium permanganate mixed solution) for 20 minutes and water for 5 minutes.

[0038] Then evenly brush 10.0mL 0.1mol / L Agent A on the surface of the cleaned stainless steel plate, and let it stand for 20min to react. Then apply 10.0mL 0.1mol / L Agent B evenly on the surface of the stainless steel plate, and let it stand for 20min to react. In this embodiment, agent A is hydroxyethylethylenediamine triacetic acid solution, and agent B is ferric sulfate solution.

[0039] Finally, rinse the surface of the stainless steel plate with water, and after drying, the contact angle θc between the surface of the stainless steel plate and the water droplet is tested <10°, which shows that the surface of the stainless steel plate has very good hydrophilic...

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Abstract

The invention relates to the technical field of metal surface treatment, and discloses a stainless steel surface hydrophilic treatment method. The stainless steel surface hydrophilic treatment methodcomprises the following steps that (1) an agent A is evenly coated on the surface of a steel plate, and a standing reaction is made for 10-30 minutes; (2) an agent B is evenly coated on the surface ofthe stainless steel, and a standing reaction is made for 10-30 minutes; and (3) the surface of the stainless steel is rinsed with water, and the water is dried. The agent A includes one or more of phytic acid, ethylene diamine tetraacetic acid, hydroxyethyl ethylenediamine triacetic acid, dihydroxyethyl glycine, diethylenetriamine pentaacetic acid, nitrilotriacetic acid, iminodisuccinic acid andhydroxy ethyl diphosphonic acid; and the agent B is a ferric ion solution. The stainless steel surface hydrophilic treatment method can solve the problems that in the prior art, when the surface of the stainless steel is subjected to the hydrophilic treatment, the processing conditions are harsh, and large-area steel surface treatment is not facilitated.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for hydrophilic treatment of stainless steel surface. Background technique [0002] The water film electrostatic separation system uses high-voltage static electricity to remove the overspray paint mist generated in the spray booth. It has the characteristics of simple structure, convenient maintenance, energy saving and environmental protection, and high efficiency of paint mist removal. It is the most advanced technology for waste paint mist treatment so far. As an important structure for collecting paint mist, stainless steel water curtain plate has excellent mechanical strength, corrosion resistance, weldability and comprehensive mechanical properties. However, due to insufficient or uneven distribution of hydroxyl and carboxyl groups on the surface, oil mist sticks to the surface, etc. However, it shows poor hydrophilicity, which in turn leads to une...

Claims

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Application Information

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IPC IPC(8): C23C22/62C23C22/68C23C22/78
CPCC23C22/62C23C22/68C23C22/78
Inventor 侯元晖李扬米春辉
Owner SHENZHEN TIANDEYI ENVIRONMENT TECH
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