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Method for preparing super-hydrophobic magnesium alloy surface

A magnesium alloy and super-hydrophobic technology, applied in the field of materials, can solve the problems of limited application of super-hydrophobic surfaces, and achieve the effects of simple and fast preparation methods, wide application prospects, and low cost

Pending Publication Date: 2019-08-16
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a superhydrophobic magnesium alloy surface preparation method to solve the problem of limited application of superhydrophobic surface preparation

Method used

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  • Method for preparing super-hydrophobic magnesium alloy surface
  • Method for preparing super-hydrophobic magnesium alloy surface

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preparation example Construction

[0022] A kind of superhydrophobic magnesium alloy surface preparation method, adopts following steps:

[0023] (1) Magnesium alloy pretreatment for standby; cut the magnesium alloy material, mechanically polish it with 400#, 800#, 1200#, 2000# SiC sandpaper in turn until the surface is smooth and flat, and then use acetone, absolute ethanol, deionized Ultrasonic cleaning with water for 5 minutes to remove impurities and oil on the metal surface, then blow dry;

[0024] (2) Dissolve the water-soluble organic phosphonic acid in deionized water. In this embodiment, the water-soluble phosphonic acid is preferably phenylphosphonic acid; the magnesium alloy material in step (1) is immersed in the water-soluble phosphonic acid solution, and the water-soluble The substance concentration of the soluble phosphonic acid solution is 0.01-0.1mol / L, and the preferred concentration is 0.1mol / L in this embodiment. The water-soluble phosphonic acid solution is heated to 95-100°C, and the heati...

Embodiment 1

[0027] After cutting the magnesium alloy material, mechanically polish it with 400#, 800#, 1200#, and 2000# SiC sandpaper in sequence until it is smooth and smooth, and then use acetone, absolute ethanol, and deionized water to ultrasonically clean it for 5 minutes to remove impurities and impurities on the metal surface. Oil stains, blow dry and set aside; weigh 0.5269g of phenylphosphonic acid, dissolve it in 100ml of deionized water, soak the pretreated metal material in the prepared phenylphosphonic acid solution, and take it out after hydrothermal reaction at 95°C for 16h , rinsed with deionized water and dried, measured by a contact angle measuring instrument, the static contact angle of the coating is 151.4°, and the rolling angle is 7.6°.

Embodiment 2

[0029] After cutting the magnesium alloy material, mechanically polish it with 400#, 800#, 1200#, and 2000# SiC sandpaper in sequence until it is smooth and smooth, and then use acetone, absolute ethanol, and deionized water to ultrasonically clean it for 8 minutes to remove impurities and impurities on the metal surface. Oil stains, dry and set aside; weigh 0.7905g of phenylphosphonic acid, dissolve it in 100ml deionized water, soak the pretreated metal material in the prepared phenylphosphonic acid solution, and take it out after hydrothermal reaction at 98°C for 20h , rinsed with deionized water and dried, measured by a contact angle measuring instrument, the static contact angle of the coating is 154.5°, and the rolling angle is 5.4°.

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Abstract

The invention belongs to the field of metal material surface treatment, and particularly discloses a method for preparing a super-hydrophobic magnesium alloy surface. The method comprises the following steps that (1), a magnesium alloy is subjected to mechanically polishing, and then is cleaned for later use; (2) water-soluble organic phosphonic acid is dissolved in deionized water, the magnesiumalloy material in the step (1) is leached in 0.01-0.1mol / L phosphonic acid aqueous solution, then heating is carried out to 95-100 DEG C, and the temperature is kept for 16-24 hours; and (3), the magnesium alloy material treated in the step (2) is taken out from the phosphonic acid solution, the magnesium alloy is washed with the deionized water, and a phosphonic acid super-hydrophobic coating isobtained after drying. The method is mainly used for preparing a magnesium alloy surface film, and the problem that the application of the super-hydrophobic surface is limited can be solved.

Description

technical field [0001] The invention belongs to the technical field of materials, and specifically discloses a method for preparing a superhydrophobic magnesium alloy surface. Background technique [0002] Superhydrophobic surfaces are widely used in the research of metal material surfaces because of their good self-cleaning, corrosion resistance, anti-fouling, anti-icing and other properties. The traditional superhydrophobic surface preparation is usually a two-step method, and there are two ways to achieve superhydrophobic surface construction. Approach (1) The first step is to create a rough structure, and the second step is to modify the surface of the rough structure with low surface energy substances (such as fluorosilane, etc.); It can produce rough structure on the material surface. [0003] At present, the methods for preparing superhydrophobic surfaces include etching method, template method, electrospinning, sol-gel method, anodic oxidation method, micro-arc oxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23C22/78
CPCC23C22/05C23C22/78
Inventor 臧东勉潘婷董娇娇荀晓伟
Owner EAST CHINA JIAOTONG UNIVERSITY