Method for promoting rustless steel surface hydrophilicity

A stainless steel, high-performance technology, applied in the field of films with good hydrophilic properties, can solve the problems that cannot fully meet the requirements of hydrophilic properties, and the hydrophilic properties have not been mentioned or given, etc., to achieve good hydrophilic properties , Improve the hydrophilic performance, and the effect of easy operation

Inactive Publication Date: 2007-07-11
赵蔚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact angle between the commonly used stainless steel and pure water is about 50°, which cannot fully meet the requirements of hydrophilicity in the above occasions. Surface treatment methods are required to improve the surface hydrophilicity of stainless steel.
[0004] Chinese patent 02258985.6 mentions improving the hydrophilicity of stainless steel through surface treatment, but does not give any treatment methods and technologies; Corrosion resistance, without any mention of its hydrophilicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare 100L solution in a corrosion-resistant plastic or stainless steel tank, the chemical substances used are sulfuric acid, sodium sulfate, zinc sulfate, manganese sulfate, iron sulfate, potassium sulfate, potassium dichromate, sodium dichromate, chromic anhydride, permanganate potassium. Dissolve the above chemical substances in water so that the solution meets the following requirements: the cationic composition is: H + : 15.15mol / L, Na + : 0.05mol / L, K + : 0.05mol / L, Zn 2+ : 0.05mol / L, Mn 2+ : 0.05mol / L, Fe 3+ : 0.05mol / L; anion composition: SO 4 2- : 5.15mol / L, CrO 4 2- : 2.55mol / L, Cr 2 o 7 2- : 0.05mol / L, MnO 4 - : 0.1mol / L.

[0022] First heat the solution to 70°C and keep the temperature at 60-80°C, immerse 10 stainless steel parts (sink filter, material is 1Cr18Ni9Ti) into the solution, keep the parts without contact and stir properly, keep warm for 25 minutes The parts are taken out, rinsed with clean water and dried in an oven at 80°C. The...

Embodiment 2

[0024] A 100L solution is arranged in the corrosion-resistant tank, and the chemical substances used are sulfuric acid, zinc sulfate, copper sulfate, nickel sulfate, potassium sulfate, potassium chloride, potassium dichromate, and chromic anhydride. Dissolve the above chemical substances in water so that the solution meets the following requirements: the cationic composition is: H + : 6mol / L, K + : 3.2mol / L, Zn 2+ : 0.4mol / L, Cu 2+ : 0.2mol / L, Ni 2+ : 0.2mol / L; anion composition: SO 4 2- : 2.4mol / L, CrO 4 2- : 0.4mol / L, Cr 2 o 7 2- : 2.4mol / L, Cl - : 0.4mol / L.

[0025] Put the 316 stainless steel fiber bundle into an empty corrosion-resistant tank, then heat the solution to 80°C and keep the temperature at 70-90°C, pump the solution through the corrosion-resistant pump and spray it on the stainless steel fiber bundle, and shake the stainless steel fiber properly, Stop spraying after 20 minutes of circulation, rinse the stainless steel fiber with clean water and dry...

Embodiment 3

[0027] Configure 2L solution, the chemical substances used are sodium sulfate, nickel sulfate, potassium sulfate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, potassium chloride, sodium chloride, sodium sulfite, sodium nitrate, potassium nitrate, potassium permanganate, Potassium Hydroxide, Sodium Hydroxide. The above chemical substances are dissolved in water so that the solution meets the following requirements: the cation is composed of: Na + : 20.2mol / L, K + : 0.6mol / L, Ca 2+ : 0.1mol / L, Mg 2+ : 0.1mol / L, Ni 2+ : 0.1mol / L; anion composition: SO 3 2- : 0.4mol / L, NO 3 - : 0.3mol / L, Cl - : 0.5mol / L, MnO 4 - : 0.6molg / L, OH - : 19.4mol / L.

[0028] First, heat the solution to 100°C and keep the temperature at 90-110°C, immerse a stainless steel part (1Cr13) in the solution, keep the part and the container wall without contact and stir properly, take out the part after keeping it warm for 15 minutes, and use Rinse with clean water at 80°...

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PUM

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Abstract

The invention discloses an improving method of hydrophilic property on the stainless steel surface, which is characterized by the following: adopting acid or alkaline disposing liquid to react with stainless steel surface with chrome or nickel or titanium under high temperature; generating film with little contact angle; improving the hydrophilic property of stainless steel surface.

Description

technical field [0001] The invention relates to a surface treatment method for improving the hydrophilic property of stainless steel, specifically, a method for forming a film with good hydrophilic property on the surface of stainless steel through chemical or electrochemical reaction. Background technique [0002] Stainless steel is widely used in industrial economy because of its excellent corrosion resistance, especially in petroleum, chemical, pharmaceutical and other fields. Many containers and equipment are made of stainless steel, which greatly reduces the corrosion loss in the above fields. Therefore, stainless steel is the preferred metal material for designers in many places where corrosion exists, such as the packing of packed towers described in Chinese patents 200320101456.4 and 00214919.2, as well as medical equipment pipe fittings, kitchen and bathroom sink filters and other devices. [0003] However, the above-mentioned applications either need to realize the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/00C23F1/10C25F3/06C22C38/18C22C38/08C22C38/14C22C38/40C22C38/50
Inventor 赵蔚
Owner 赵蔚
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