Preparation method of transparent super-hydrophobic coating

A super-hydrophobic coating and transparent technology, applied in the field of preparation of hydrophobic materials, can solve the problems of expensive raw materials, complex production process of transparent super-hydrophobic surface, special equipment used, etc. Optical, low-cost effect

Inactive Publication Date: 2014-05-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a preparation method of a transparent super-hydrophobic coating to solve the shortcomings of complex production process, special equipment and expensive raw materials on the transparent super-hydrophobic surface. ...

Method used

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  • Preparation method of transparent super-hydrophobic coating
  • Preparation method of transparent super-hydrophobic coating
  • Preparation method of transparent super-hydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of boehmite sol

[0045] The boehmite colloid was prepared by metal alkoxide hydrolysis, aluminum isopropoxide and nitric acid were added to water, and the molar ratio was controlled to be [H 2 O]:[AIP]:[HNO 3 ]=100:1:0.1, stirred vigorously at 90°C, accompanied by condensation and reflux, reacted for 24 hours, the solution was slightly cyan, and boehmite sol was obtained, which was cooled and sealed.

[0046] (2) Formation of seed film on the surface of substrate material

[0047] The boehmite seed film is formed on the surface of the base material by means of sol-gel and pull coating method. With the help of a puller, in the boehmite sol solution, the clean glass sheet is pulled and coated, and the thickness of the film can be controlled by adjusting the concentration of the boehmite sol or the number of pulls, and the thickness is controlled at 30nm to 200nm between.

[0048] (3) Formation of rough surface with nanosheet structure

[0049] 0.12mo...

Embodiment 2

[0053] (1) Preparation of boehmite sol

[0054] The boehmite colloid was prepared by metal alkoxide hydrolysis, aluminum isopropoxide and nitric acid were added to water, and the molar ratio was controlled to be [H 2 O]:[AIP]:[HNO 3 ]=100:1:0.1, stirred vigorously at 90°C, accompanied by condensation and reflux, reacted for 24 hours, the solution was slightly cyan, and boehmite sol was obtained, which was cooled and sealed.

[0055] (2) Formation of seed film on the surface of substrate material

[0056] The boehmite seed film is formed on the surface of the base material by means of sol-gel and pull coating method. With the help of a puller, in the boehmite sol solution, the clean glass sheet is pulled and coated, and the thickness of the film can be controlled by adjusting the concentration of the boehmite sol or the number of pulls, and the thickness is controlled at 30nm to 200nm between.

[0057] (3) Formation of rough surface with nanosheet structure

[0058] 0.12mo...

Embodiment 3

[0062] (1) Preparation of boehmite sol

[0063] The boehmite colloid was prepared by metal alkoxide hydrolysis, aluminum isopropoxide and nitric acid were added to water, and the molar ratio was controlled to be [H 2 O]:[AIP]:[HNO 3 ]=100:1:0.1, stirred vigorously at 90°C, accompanied by condensation and reflux, reacted for 24 hours, the solution was slightly cyan, and boehmite sol was obtained, which was cooled and sealed.

[0064] (2) Formation of seed film on the surface of substrate material

[0065] The boehmite seed film is formed on the surface of the base material by means of sol-gel and pull coating method. With the help of a puller, in the boehmite sol solution, the clean glass sheet is pulled and coated, and the thickness of the film can be controlled by adjusting the concentration of the boehmite sol or the number of pulls, and the thickness is controlled at 30nm to 200nm between.

[0066] (3) Formation of rough surface with nanosheet structure

[0067] 0.12mo...

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Abstract

The invention relates to a preparation method of a transparent super-hydrophobic coating. The preparation method comprises the steps of (1) preparing boehmite sol; (2) soaking a substrate material in the boehmite sol, and forming a boehmite seed film on the surface of the substrate material through a way of pulling and dip coating; (3) soaking the substrate material coated with the boehmite seed film in a solution containing sodium metaaluminate and urea, and carrying out hydrothermal reaction; and (4) soaking the boehmite seed film-coated substrate material processed by the step (3) in a solution containing a hydrophobic compound, and implementing self-assembly reaction at normal temperature; or carrying out chemical vapor deposition at 100-150 DEG C and implementing self-assembly reaction to obtain the transparent super-hydrophobic coating. The method disclosed by the invention is simple in process, easily available in raw material, low in cost and good in repeatability; the prepared coating is excellent in super-hydrophobicity and light transmission, and is applicable to windshields of automobile, airplane, spacecraft and the like, as well as window glass and curtain walls of buildings and other occasions.

Description

technical field [0001] The invention belongs to the field of preparation of hydrophobic materials, in particular to a preparation method of a transparent super-hydrophobic coating. Background technique [0002] In recent years, a series of artificial bionic superhydrophobic surfaces have been prepared with special wettability, such as the self-cleaning function of lotus leaves, the superior water walking function of water striders, the directional adhesion function of butterfly wings, and the anti-fog function of mosquito eyes. , the anti-reflective function of cicada wings and the water-collecting function of spider silk, the study of these animal and plant surfaces with special wettability is of great significance for the development of more functional superhydrophobic surfaces. Due to the broad application prospects of super-hydrophobic surfaces in real production and life, such as waterproof clothing, self-cleaning glass, exterior wall coatings, etc., it also has importa...

Claims

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Application Information

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IPC IPC(8): C03C17/42
Inventor 王智杰纪惟惟龚静华马敬红徐坚
Owner DONGHUA UNIV
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