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Steel surface coating and preparation method thereof

A surface coating and coating technology, applied in coatings, protein coatings, anti-corrosion coatings, etc., to achieve good bonding performance and simple preparation methods

Inactive Publication Date: 2021-06-04
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a mussel mucin coating on a steel surface and a preparation method thereof, which solves the problem of forming a mussel mucin coating with strong binding force and protection on the steel surface

Method used

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  • Steel surface coating and preparation method thereof
  • Steel surface coating and preparation method thereof
  • Steel surface coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First weigh 9.15g boric acid (H 3 BO 3 ) and 14.20g borax (Na 2 B 4 o 7 10H 2 O) Add 1000 mL of deionized water and place it on a magnetic stirrer to fully stir and dissolve, and prepare a boric acid-sodium borate buffer solution with a pH value of 8.40±0.05. Take 10mL of mussel mucin stock solution with a concentration of 5.0mg / mL and add it to 50mL of prepared boric acid-sodium borate buffer solution with a pH value of 8.40±0.05, stir the solution fully after adding, the preparation of the deposition solution is completed, and the pH of the prepared deposition solution is The value is 8.20.

[0027] The sheet-shaped Q235 steel sample was degreased with acetone, ultrasonically cleaned with absolute ethanol for 1 min, then fully rinsed with deionized water, dried with cold air and immersed in a deposition solution with a water bath temperature control temperature of 25°C for 16 h of deposition.

[0028] After the deposition was completed, the steel sample was drie...

Embodiment 2

[0033] First weigh 9.15g boric acid (H 3 BO 3 ) and 14.20g borax (Na 2 B 4 o 7 10H 2 O) Add 1000 mL of deionized water and place it on a magnetic stirrer to fully stir and dissolve, and prepare a boric acid-sodium borate buffer solution with a pH value of 8.40±0.05. Take 10ml of mussel mucin stock solution with a concentration of 5.0mg / mL and add it to 70mL of boric acid-sodium borate buffer solution with a pH value of 8.40±0.05. After adding, stir the solution fully. The preparation of the deposition solution is completed, and the pH of the prepared deposition solution is The value is 8.30.

[0034] The sheet-shaped Q235 steel sample was degreased with acetone, ultrasonically cleaned with absolute ethanol for 1 min, then fully rinsed with deionized water, dried with cold air and immersed in a deposition solution with a water bath temperature control temperature of 25°C for 20 h of deposition.

[0035] After the deposition was completed, the steel sample was dried in an ...

Embodiment 3

[0038] First weigh 9.15g boric acid (H 3 BO 3 ) and 14.20g borax (Na 2 B 4 o 7 10H 2 O) Add 1000 mL of deionized water and place it on a magnetic stirrer to fully stir and dissolve, and prepare a boric acid-sodium borate buffer solution with a pH value of 8.40±0.05. Take 10mL of mussel mucin stock solution with a concentration of 5.0mg / mL and add it to the boric acid-sodium borate buffer solution with a pH value of 8.40±0.05 prepared by 90mL, stir the solution fully after adding, and the preparation of the deposition solution is completed. The value is 8.30.

[0039] The sheet-shaped Q235 steel sample was degreased with acetone, ultrasonically cleaned with absolute ethanol for 1 min, then fully rinsed with deionized water, dried with cold air and immersed in a deposition solution with a water bath temperature control temperature of 25°C for 24 h of deposition.

[0040] After the deposition is completed, the steel sample is dried in an oven at 40° C. for 2 hours to obtain...

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Abstract

The invention belongs to the technical field of preparation of biological composite materials, and particularly relates to a coating with certain protectiveness on the surface of steel and a preparation method of the coating. A coating solution is a mixed solution of a boric acid-sodium borate buffer solution and a mussel mucin stock solution. The preparation method is simple, the binding property of the coating and a steel substrate is good, and the coating has a good protection effect on the steel substrate. In order to keep stable performance of the mussel mucin stock solution, the mussel mucin stock solution is usually stored in an acidic environment, and a boric acid-sodium borate buffer solution is used for adjusting the environment of the mussel mucin stock solution from acidity to alkalinity; the mussel mucin can be cured on the surface of the steel substrate and form a biological coating layer with certain binding force and protectiveness under the condition of a proper ratio of a buffer solution to a mussel mucin stock solution, so that the service life of the steel in a water environment is prolonged.

Description

technical field [0001] The invention belongs to the technical field of biological composite material preparation, and in particular relates to a protective coating on the surface of steel and a preparation method thereof. Background technique [0002] Mussel mucin has a wide range of adhesion and good biocompatibility, and has been widely used in the field of biomedicine. Its excellent water resistance and adhesion performance have also attracted the attention of material workers. Traditional steel surface coatings are easy to fall off underwater, and steel structure coatings that require high aesthetics are not easy to completely remove when not needed. As a biological material, mussel mucin is degradable, but at this stage, it has not been possible to use mussel mucin to prepare a coating with strong binding force and certain protection on the surface of metal materials. Contents of the invention [0003] The invention provides a mussel mucin coating on the surface of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D189/00C09D7/61C09D5/08
CPCC08K2003/387C09D5/08C09D189/00C09D7/61C08K3/38
Inventor 杨黎晖王盈徐玮辰王秀通孙丛涛李言涛黄彦良
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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