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A method for preparing colored superhydrophobic stainless steel based on alkaline electrochemical coloring

A stainless steel, super-hydrophobic technology, applied in the direction of anodic oxidation, coating, etc., can solve the problems of uneven coloring of coloring technology, easy adhesion of pollutants on the surface, poor long-term service stability, etc., and achieve low voltage value and dense adhesion , Prolong the effect of coloring time

Active Publication Date: 2019-10-25
合肥龙智机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can prepare a super-hydrophobic self-cleaning colored stainless steel surface with good color uniformity and green environmental protection, which overcomes the uneven coloring and unfriendly environment of ordinary electrochemical stainless steel coloring technology, and the prepared surface is easy to adhere to pollutants, long-term Disadvantages of poor service stability

Method used

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  • A method for preparing colored superhydrophobic stainless steel based on alkaline electrochemical coloring
  • A method for preparing colored superhydrophobic stainless steel based on alkaline electrochemical coloring
  • A method for preparing colored superhydrophobic stainless steel based on alkaline electrochemical coloring

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Embodiment 1

[0035] A method for preparing golden yellow superhydrophobic stainless steel based on alkaline electrochemical coloring, comprising the following steps:

[0036] (1) Clean the stainless steel surface: Cut 0.27mm thick 304 stainless steel into strips of 50×20mm, and then ultrasonically clean the stainless steel in acetone, absolute ethanol, and deionized water to remove oil stains on the surface ;

[0037] (2) Place the stainless steel treated in step (1) in an alkaline coloring solution, use the stainless steel as the working electrode, the platinum electrode as the counter electrode, and the mercury / mercury oxide electrode (electrolyte is 1mol / LKOH) as the reference electrode , carry out triangular wave potential coloring to stainless steel at 60 ℃, during the coloring process, alkaline coloring solution is stirred, stirring speed is 200rpm, after coloring is finished, through water washing, drying, obtain golden yellow stainless steel (the photo of this golden yellow stainle...

Embodiment 2

[0042] A method for preparing purple superhydrophobic stainless steel based on alkaline electrochemical coloring, comprising the following steps:

[0043] (1) Clean the stainless steel surface: Cut 0.27mm thick 304 stainless steel into strips of 50×20mm, and then ultrasonically clean the stainless steel in acetone, absolute ethanol, and deionized water to remove oil stains on the surface ;

[0044] (2) Place the stainless steel treated in step (1) in an alkaline coloring solution, use the stainless steel as the working electrode, the platinum electrode as the counter electrode, and the mercury / mercury oxide electrode (electrolyte is 1mol / LKOH) as the reference electrode , coloring the stainless steel with triangular wave potential at 60°C. During the coloring process, the alkaline coloring solution is magnetically stirred at a stirring rate of 200rpm. After the coloring is completed, it is washed with water and dried to obtain purple stainless steel. Use a color difference met...

Embodiment 3

[0049] A method for preparing green superhydrophobic stainless steel based on alkaline electrochemical coloring, comprising the following steps:

[0050] (1) Clean the stainless steel surface: Cut 0.27mm thick 304 stainless steel into strips of 50×20mm, and then ultrasonically clean the stainless steel in acetone, absolute ethanol, and deionized water to remove oil stains on the surface ;

[0051] (2) Place the stainless steel treated in step (1) in an alkaline coloring solution, use the stainless steel as the working electrode, the platinum electrode as the counter electrode, and the mercury / mercury oxide electrode (electrolyte is 1mol / LKOH) as the reference electrode , coloring the stainless steel with triangular wave potential at 60°C. During the coloring process, the alkaline coloring solution was stirred at a stirring rate of 300rpm. After the coloring was completed, the green stainless steel was obtained by washing with water and drying. The average value, the brightnes...

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Abstract

The invention discloses a method of preparing colored superhydrophobic stainless steel on the basis of an alkaline electrochemical colorant. The method includes following steps: (1), cleaning the surface of stainless steel; (2), putting the stainless steel after being treated in the step (1) into alkaline coloring liquid, taking stainless steel as a working electrode and an inert electrode as a pair electrode to perform triangular wave potential coloring on the stainless steel at 50-60 DEG C, washing and dryinging after coloring is completed to obtain colored stainless steel different in color; (3), coating the surface of the colored stainless steel prepared in the step (2) with a nano silicon dioxide solution, airing, coating a long-chain silane solution, curing the colored stainless steel at 40-120 DEG C for 30-120min to obtain the colored superhydrophobic stainless steel with a transparent superhydrophobic layer. The colored superhydrophobic stainless steel prepared by the method isuniform and bright in color, high in wear resistance and corrosion resistance and lasting in colored antifouling ability.

Description

technical field [0001] The invention belongs to the technical field of surface modification of metal substrates, and in particular relates to a method for preparing colored superhydrophobic stainless steel based on alkaline electrochemical coloring. Background technique [0002] Stainless steel has been widely used in industrial production and daily life due to its excellent corrosion resistance and formability. Stainless steel coloring not only endows stainless steel products with various colors and increases the variety of products, but also improves the wear resistance and corrosion resistance of products, endowing stainless steel with a wider range of applications. For example, black stainless steel can be used for solar collectors, and colored stainless steel can be used for decoration, home appliances, mobile phone casings, etc. [0003] Since the 1970s, people have studied the coloring process of stainless steel. In 1972, Inco Europe Co., Ltd. invented the acid chem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/34C09D183/04
CPCC08G77/24C09D4/00C09D183/04C25D11/34
Inventor 屈钧娥于超奇王海人秦静朱凯魏飞飞赵雪竹
Owner 合肥龙智机电科技有限公司
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