Micro-nano super-hydrophobic film on metal substrate surface, preparation method and application thereof

A metal substrate, super-hydrophobic technology, applied in metal material coating technology, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of unfavorable mass production, high cost, multi-energy, etc., to save preparation time and Manpower, preparation cost saving, low price effect

Inactive Publication Date: 2019-09-17
ANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal oxidation method (H. H. Lee, C. Lee, Y. L. Kuo, Y. W. Yen, A Novel Two-Step MOCVD for Producing Thin Copper Flms with a Mixture of Ethyl Alcohol and Water as the Additive. Thin Solid Films 2006, 498: 43−52) then Need high temperature and high pressure environment, need to consume more energy
The nanoimprint method requires special instruments and equipment, which are large-scale equipment, complicated to operate, and high in cost, which is not conducive to mass production

Method used

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  • Micro-nano super-hydrophobic film on metal substrate surface, preparation method and application thereof
  • Micro-nano super-hydrophobic film on metal substrate surface, preparation method and application thereof
  • Micro-nano super-hydrophobic film on metal substrate surface, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Add sodium stearate into distilled water, stir and heat to dissolve it, configure it into an aqueous solution of sodium stearate with a concentration of 0.0005 mol / L, and cool to room temperature for use. After the phosphor bronze mesh is cleaned with detergent, rinse it with pure water for 3 times, blow it dry with nitrogen, immerse it in the above aqueous solution of sodium stearate, and react it in a water bath at 25°C for 18 hours. After the reaction, put the phosphorus The copper grid was washed three times with ethanol and distilled water respectively, and dried with nitrogen. Then the contact angle and SEM tests were carried out on the hydrophobic surface of the phosphor copper mesh sample.

[0064] The contact angle test method is: under the condition of 25 ℃ temperature, using the optical contact angle measuring instrument (SPCAX 3 series, Beijing Hake, China) take three measurements on different parts of the prepared sample surface, and calculate the average ...

Embodiment 2

[0067] Add sodium stearate into distilled water, stir and heat to dissolve it, configure it into an aqueous sodium stearate solution with a concentration of 0.001mol / L, and cool it to room temperature for later use. Copper tube 8mm (diameter) × 0.35mm (wall thickness) × 40mm (length) through 0.5mol / L NaHCO 3 After ultrasonic cleaning of the aqueous solution, rinse with pure water for 3 times, blow dry with nitrogen, then immerse in the above-mentioned sodium stearate aqueous solution, and react in a water bath at 25°C for 19 hours. After the reaction, the copper tube is washed with ethanol and They were washed three times with distilled water and blown dry with nitrogen gas. Then carry out contact angle and SEM test on the hydrophobic sample of the copper tube, the contact angle to water is 159.4°, the SEM photo is as follows figure 2 As shown, the micro-nano superhydrophobic film on the surface of the sample is an irregular strip structure.

Embodiment 3

[0069] Add sodium laurate into distilled water, stir and heat to dissolve it, and configure it into an aqueous solution of sodium laurate with a concentration of 0.003mol / L, and cool it to room temperature for use. Phosphor bronze sheet 1cm (width) × 2cm (length) was washed with acetone, ethanol and 0.1mol / L nitric acid in turn, then immersed in the above sodium laurate aqueous solution, and reacted in a water bath at 25°C for 36 hours. After the reaction, the phosphor copper sheet was washed three times with ethanol and distilled water, and dried with nitrogen gas. Then, the contact angle test was carried out on the hydrophobic sample of phosphor copper sheet, and the contact angle to water was 163.0°.

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Abstract

In order to solve the problems existing in preparation of a metal material super-hydrophobic film in the prior art, the invention provides a micro-nano super-hydrophobic film on a metal substrate surface, a preparation method and application thereof. The preparation method comprises the following step (1) of taking pure water with the resistivity of 1.0 [mu]S / cm-50.0 [mu]S / cm as solvents, and dispersing fatty acid salts or detergents containing the fatty acid salts in the pure water for forming uniform aqueous solutions or emulsion, wherein the detergents containing the fatty acid salts comprise different kinds of toilet soap, washing soap, laundry powder, detergents, liquid laundry detergents and hand lotion containing the above components; and the step (2) of soaking cleaned metal materials in the aqueous solutions or the emulsion obtained in the step (1) at 0-60 DEG C, so that a super-hydrophobic film is formed on the surface of the metal substrate. The super-hydrophobic film prepared with the preparation method is of stripy, irregular flaky and acicular micro-nano structures, and the static contact angle with water is larger than 150 DEG.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic coatings for metal materials, and in particular relates to a micro-nano super-hydrophobic film on the surface of a metal substrate and a preparation method and application thereof. Background technique [0002] Metal materials occupy an important position in the entire national economy, and bionic superhydrophobic structures are constructed on their surfaces, which can be used to reduce drag on the hull (Pan Q, Liu J, Zhu Q. A water strider-like model with large and stable loading capacity fabricated from superhydrophobic copper foils[J].ACS Applied Materials & Interfaces, 2010, 2(7): 2026–2030), anticorrosion (Vilaró I, Yagüe J L, Borrós S. Superhydrophobiccopper surfaces with anticorrosionproperties fabricated by solventless CVD methods[J]. ACS Applied Materials & Interfaces, 2017, 9(1): 1057–1065); used in condensation tubes to resist frosting (Torresin D, Tiwari M K, Col D D. Flow condensa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05F28F19/02
CPCC23C22/05F28F19/02F28F2245/04
Inventor 孔令豪陈新华谷令彪余來贵何强姚玉钦马洪儒张勇王志刚
Owner ANYANG INST OF TECH
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