Method for preparing ultra hydrophobic surface on surface of metal copper

A super-hydrophobic, metallic copper technology, which is applied to the cleaning method using liquid, the device for coating liquid on the surface, and the surface pretreatment, etc., can solve the problems that are not suitable for industrial production, cannot be prepared in a large area, and the process is complicated. Achieve good heat resistance and acid and alkali corrosion resistance, reduce resistance, and make the industry simple

Inactive Publication Date: 2007-12-26
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current commonly used methods mentioned above are generally complicated in process, high in cost, and cannot be prepared in a large area. Most of them are not suitable for industrial production and are only suitable for experimental theoretical research.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Clean the copper sample with an ultrasonic cleaner. The cleaning steps are: 1) put the copper plate in acetone and use ultrasonic cleaning to remove the grease on the sample, 2) then clean it with deionized water, 3) finally put it in a vacuum drying Dry at 50°C and set aside for use; place the treated copper plate in a supersaturated copper sulfate solution for 15 days; wash the soaked copper plate with deionized water to remove excess copper sulfate solution on the surface of the sample after soaking, and then Air-dry in the air; add vinyl-terminated polydimethylsiloxane dropwise to the surface of the dried copper plate for chemical modification, and then dry at 120°C for 1 hour in the atmosphere to obtain a super-hydrophobic surface.

[0022] The porosity of the superhydrophobic surface of the metal copper is greater than 90%; the static contact angle of water droplets on the surface is 170±1.6°;

Embodiment 2

[0024] Copper sample cleaning treatment is identical with embodiment 1; The copper sample that handles is placed in the supersaturated copper sulfate solution 10 days; The copper sample after soaking is cleaned with deionized water, to remove excess on the sample surface after soaking. Copper sulfate solution, and then air-dried in the atmosphere; drop vinyl-polydimethylsiloxane on the surface of the dried sample for chemical modification, and dry the oxidized sample in the air at 100°C in a drying oven. After 2 hours for the sample, a super-hydrophobic surface can be obtained.

[0025] The porosity of the superhydrophobic surface of the metallic copper is about 80%; the static contact angle of a water drop on its surface is 164±1°.

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Abstract

The invention publics a method of preparing super sulfur-water surface on the metal copper surface, especially involves a method that it can prepare super sulfur-water surface, super vitriol surface and super sulfur-alkalescence surface simultaneously. The method puts the metal copper plate in the oversaturation solution full of vitriol copper for 10-15 days,and cleans with the deionized water, and has a air-dry; smearing the ethylene-dimethyl siloxanes on the metal copper plate surface reelingly, and drying 1-2 hours in air atmosphere 100-120deg.c.Then dropping the pure water, the acid or the alkali on the copper sign surface to make a determination of the contact angle which needs to be bigger than 150deg.The invention simultaneously has the super sulfur-water, super vitriol and super sulfur-alkalescence on the copper surface, it may help to prevent the metal copper surface from being polluted and rusted and so on.

Description

technical field [0001] The invention relates to a method for preparing a superhydrophobic surface on a metal copper surface, in particular to a method for preparing a superhydrophobic, superhydrophobic and superhydrophobic surface at the same time. Background technique [0002] Surface science research and thin film preparation technology have been widely concerned, because this research and technology are closely related to people's daily life. In the field of physical and chemical materials research, people's research on the hydrophobic and hydrophilic properties of materials has gradually matured, and many patents and products on hydrophilic and hydrophobic materials appeared in the 20th century. At the same time, it has been found that some plant leaves, such as lotus leaves, taro leaves and straw leaves, have superhydrophobicity and self-cleaning ability. It has been found that the peculiar structural properties of the surface of superhydrophobic plants endow them with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/10B08B3/12C23G1/00C09D5/16
Inventor 刘维民郭志光
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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