Production method of super-hydrophobic film

A hydrophobic film and super-hydrophobic technology, which is applied in the direction of surface coating liquid devices, coatings, special surfaces, etc., can solve the problems of not achieving the desired effect, single protection function, high maintenance cost, etc., and achieve good anti-corrosion Anti-icing performance, preventing surface icing, and prolonging the effect of icing time

Inactive Publication Date: 2020-02-07
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these protective functions are relatively simple, and the maintenance cost is high, which cannot achieve the desired effect.

Method used

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  • Production method of super-hydrophobic film
  • Production method of super-hydrophobic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of silicon dioxide and PVDF hydrophobic film and its preparation method, comprising the following materials: 10ml of DMF solution, 0.5g of PVDF powder, 0.7g of silica particles, 1ml of hydrophobic modification liquid.

[0024] The preparation of the hydrophobic film at room temperature includes the following steps:

[0025] (1) Preparation of silicon dioxide and PVDF film: add 0.7g of hydrophobic silicon dioxide particles to 0.5g of PVDF solution, fully stir for a period of time to obtain its mixed solution;

[0026] (2) Preparation of PVDF solution: add 10ml of DMF to the weighing bottle, and then add 0.5g of PVDF to the weighing bottle, and stir at room temperature for 6 hours until the whole solution becomes clear.

[0027] (3) Stir the obtained PVDF solution with 0.7 g of hydrophobic silica particles for 3 hours to obtain a silica and PVDF mixed coating;

[0028] (4) Preparation of hydrophobic modification solution: mix hexadecyltrimethoxysilane and absol...

Embodiment 2

[0036] A preparation method of silicon dioxide and PVDF hydrophobic film and its preparation method, comprising the following substances: 10ml of DMF solution, 0.5g of PVDF powder, 0.5g of silica particles, 1.5ml of hydrophobic modification solution.

[0037] The preparation of the hydrophobic film at room temperature includes the following steps:

[0038] (1) Preparation of silica and PVDF film: add 0.5 g of hydrophobic silica particles to 0.5 g of PVDF solution, and stir for a period of time to obtain the mixed solution;

[0039] (2) Preparation of PVDF solution: add 10ml of DMF to the weighing bottle, and then add 0.5g of PVDF to the weighing bottle, and stir at room temperature for 6 hours until the whole solution becomes clear.

[0040] (3) Stir the obtained PVDF solution with 0.5 g of hydrophobic silica particles for 3 hours to obtain a silica and PVDF mixed coating;

[0041] (4) Preparation of hydrophobic modification solution: mix hexadecyltrimethoxysilane and anhydrous ethanol ...

Embodiment 3

[0046] The product obtained in Example 2 was subjected to different pH detection steps.

[0047] (1) Dilute concentrated hydrochloric acid in a certain amount of water into solutions with pH=1, pH=2, pH=3, pH=4, pH=5, and pH=6; prepare 3.5wt% sodium chloride solution as Solution with pH=7; Dissolve a certain amount of sodium hydroxide in water to prepare solutions with pH=8, pH=9, pH=10, pH=11, and pH=12.

[0048] (2) The product in Example 2 was immersed in the solution prepared in step (1), and the contact angle was measured after 24h and 120h.

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Abstract

The invention relates to a production method of a super-hydrophobic film. The production method of the super-hydrophobic film comprises the following steps: adding PVDF into a DMF solution, and at a room temperature, conducting stirring until the solution is clear to obtain a PVDF solution; stirring the PVDF solution and silicon dioxide particles evenly to obtain silicon dioxide and PVDF mixed paint; producing a hydrophobicity modification solution: mixing and then stirring 1H,1H,2H,2H-perfluorooctyltriethoxysilane and absolute ethyl alcohol for use; and coating a matrix with a layer of the silicon dioxide and PVDF mixed paint by means of a Czochralski method, after drying is conducted at 60-80 DEG C, spraying the hydrophobicity modification solution by means of a spray method, and conducting treatment in an oven at 110-140 DEG C for 1-2 hours to obtain a super-hydrophobic coating. Anti-icing tests of the coating at -20 DEG C are conducted, and supercooled water is sprayed; results show that the coating has significant anti-icing performance; after being soaked under conditions of strong acids and strong alkalies for 120 hours, the coating still has very strong anti-corrosion capability; meanwhile, the coating can cope with effects of high-temperature and low-temperature weather on the coating; and therefore, the material is excellent hydrophobic paint, and has great application potential.

Description

Technical field [0001] A preparation method for preparing silica coating super-hydrophobic film, which belongs to the field of materials and environment, and mainly relates to the surface of large equipment that is easy to be polluted by rain and dust, easy to freeze and easy to be corroded. The coating can effectively improve the resistance of the material Pollution, anti-icing and anti-corrosion ability. Background technique [0002] In the process of natural gas extraction, some gases such as carbon dioxide and hydrogen sulfide are often accompanied. The presence of these gases not only reduces the calorific value of natural gas, but also has corrosive effects on pipelines and equipment. Corrosion can cause pipeline fractures and pipeline explosions. This will affect people's production and life. The harm caused by corrosion not only causes economic losses, but also threatens people's lives. Therefore, many teams at home and abroad have conducted a lot of research around thi...

Claims

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Application Information

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IPC IPC(8): C09D127/16C09D7/61C09D5/08C09D183/08B05D3/02B05D5/00
CPCB05D3/0254B05D5/00B05D2401/21B05D2451/00B05D2506/10B05D2518/10B05D2601/22C08G77/24C09D4/00C09D5/08C09D127/16C09D183/08C09D7/61C08K3/36B05D2420/01B05D2425/02B05D2420/02B05D2425/01
Inventor 谭新玉黄正涛
Owner CHINA THREE GORGES UNIV
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