Super oleophobic coating preparation method

A super-oleophobic and coating technology, which is applied in coatings, metal material coating processes, and devices for coating liquids on the surface, can solve the problems of harsh process conditions and inability to prepare large areas, and achieves easy preparation methods, Good practicability and economy, simple preparation effect

Inactive Publication Date: 2013-02-13
镇江中孚复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process conditions of this method are relatively harsh and cannot be prepared in a large area.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Disperse perfluorooctanoic acid in water, add dropwise 0.1-0.3mol / L zinc acetate aqueous solution, stir for 1-4 hours, and filter and dry to obtain zinc perfluorooctanoate powder. Disperse 0.1 g of zinc perfluorooctanoate in 10 mL of ethanol, and stir thoroughly to obtain a dispersion of zinc perfluorooctanoate. Use a spray gun to spray on the surface of the steel block that has been dewatered, degreased, and derusted under an air pressure of 0.1~0.2MPa, and put the sprayed steel block in an oven at 80°C to dry. Its contact angle to oil is 148~151°, and its rolling angle is 15~20°.

Embodiment 2

[0018] Disperse perfluorooctanoic acid in water, add dropwise 0.1-0.3mol / L copper acetate aqueous solution, stir for 1-4 hours, filter and dry to obtain perfluorooctanoic acid copper powder. Disperse 0.2 g of copper perfluorooctanoate in 10 mL of ethanol, and stir thoroughly to obtain a dispersion of copper perfluorooctanoate. Use a spray gun to spray on the surface of the steel block that has been dewatered, degreased, and derusted under the pressure of 0.1~0.2MPa, and put the sprayed steel block in an oven at 100°C to dry. Its contact angle to oil is 155~158°, and its rolling angle is 8~10°.

Embodiment 3

[0020] Disperse perfluorooctanoic acid in water, add dropwise 0.1-0.3 mol / L copper acetate aqueous solution, stir for 1-4 hours, filter and dry to obtain perfluorooctanoic acid copper powder. Disperse 0.3 g of copper perfluorooctanoate in 10 mL of ethanol, and stir thoroughly to obtain a dispersion of copper perfluorooctanoate. Use a spray gun to spray on the surface of the steel block that has been dewatered, degreased, and derusted under an air pressure of 0.1~0.2MPa, and put the sprayed steel block in an oven at 80°C to dry. Its contact angle to oil is 160~163°, and its rolling angle is 3~5°.

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Abstract

The invention discloses a super oleophobic coating preparation method which comprises the steps of dispersing perfluoro caprylic acid into water, dropwise adding acetic acid saline solution of 0.1 to 0.3 mol/L, stirring for 1 to 4 hours, obtaining perfluoro caprylate, dispersing 0.1 to 0.3g of perfluoro caprylate into 10-20mL ethanol, fully stirring to obtain perfluoro caprylate dispersion liquid, and using a spray method to obtain a perfluoro caprylate super oleophobic coating. The raw materials of the preparation method are simple to prepare, sufficient in market goods supply and low in cost. The preparation method is easy to achieve. The super oleophobic coating is good in stability and excellent in oleophobic effect. The prepared super oleophobic coating can be applied to the outer surfaces of metal, oil conveying pipelines, water transportation tools and the like.

Description

technical field [0001] The invention relates to the technical field of solid surface super-oleophobic, in particular to a preparation method of a super-oleophobic coating. Background technique [0002] Wettability is an important property of solid surfaces. Super oleophobic surface generally means that the contact angle with oil is greater than 150°. Since oil droplets cannot stay on the super oleophobic surface stably, it is easy to roll off the surface without leaving any traces. , liquid transportation and other fields have broad application prospects. How to prepare superoleophobic surfaces has always been a research hotspot; however, due to the strict requirements of superoleophobic properties on the surface structure and surface chemical composition of materials, there are still few methods for preparing superoleophobic surfaces at home and abroad. [0003] In CN101545106A, a method for obtaining a super-oleophobic surface by soaking in a solution is disclosed. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34B05D5/08
Inventor 李长生杨进唐华范有志钱周
Owner 镇江中孚复合材料有限公司
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