Preparation method of transparent super-amphiphobic coating

A transparent coating and super-amphiphobic technology, which is applied in the field of preparation of transparent super-amphiphobic coatings, can solve the problems of transparent coatings such as waterproof and oil pollution prevention, and achieves easy preparation methods, good visible light transmittance, and simple preparation Effect

Active Publication Date: 2014-03-12
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 purpose of the present invention is to provide a preparation method of a transparent super-amphiphobic coating, which solves the practical problem of waterproof and oil-proof pollution of the transparent coating; the method is simple in process, low in cost and good in repeatability, and the prepared coating has excellent Superhydrophobicity, superoleophobicity and light transmission

Method used

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  • Preparation method of transparent super-amphiphobic coating

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of sol suspension

[0027] Mix 1g of carbon black and 1g of carbon nanotubes into 500g of absolute ethanol, ultrasonically disperse for 15 minutes, add 8g of benzyl alcohol, 15g of tetraethyl silicate and 10g of ammonia into the above dispersion system dropwise while stirring, and continue Stirring; after the reaction is over, a hybrid silica sol suspension is obtained.

[0028] high temperature oxidation treatment

[0029] The obtained hybrid silica sol suspension is sprayed on the surface of the glass substrate under a pressure of 0.15-0.20 MPa, and then oxidized at 500° C. to obtain a transparent coating.

[0030] Fluorosilane modification of coating surface

[0031] The obtained transparent coating was subjected to surface modification by vapor deposition, left to stand for 2 hours, and then the coating was taken out and dried in vacuum to obtain a transparent super-amphiphobic coating.

[0032] The water contact angle of the obtained transparent supe...

Embodiment 2

[0034] Preparation of sol suspension

[0035] Mix 1g of carbon black and 2g of carbon nanotubes into 500g of absolute ethanol, ultrasonically disperse for 15 minutes, add 10g of benzyl alcohol, 25g of tetraethyl silicate and 12g of ammonia into the above dispersion system dropwise while stirring, and continue Stirring; after the reaction is over, a hybrid silica sol suspension is obtained.

[0036] high temperature oxidation treatment

[0037] The obtained hybrid silica sol suspension is sprayed on the surface of the glass substrate under a pressure of 0.15-0.20 MPa, and then oxidized at 500° C. to obtain a transparent coating.

[0038] Fluorosilane modification of coating surface

[0039] The obtained transparent coating was subjected to surface modification by vapor deposition, and left to stand for 3 hours, then the coating was taken out and dried in vacuum to obtain a transparent super-amphiphobic coating.

[0040] The water contact angle on the surface of the obtained ...

Embodiment 3

[0042] Preparation of sol suspension

[0043] Mix 2g of carbon black and 5g of carbon nanotubes into 1000g of absolute ethanol, ultrasonically disperse for 15 minutes, add 20g of benzyl alcohol, 50g of tetraethyl silicate and 30g of ammonia into the above dispersion system dropwise while stirring, and continue Stirring; after the reaction is over, a hybrid silica sol suspension is obtained.

[0044] high temperature oxidation treatment

[0045] The obtained hybrid silica sol suspension is sprayed on the surface of the glass substrate under a pressure of 0.15-0.20 MPa, and then oxidized at 550° C. to obtain a transparent coating.

[0046] Fluorosilane modification of coating surface

[0047] The obtained transparent coating was subjected to surface modification by vapor deposition, left standing for 4 hours, and then the coating was taken out and dried in vacuum to obtain a transparent super-amphiphobic coating.

[0048] The water contact angle of the obtained transparent su...

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Abstract

The invention discloses a preparation method of a transparent super-amphiphobic coating. According to the method, the coating is prepared by preparing a hybrid silica sol suspension by utilization of a sol-gel method, spraying the suspension on a surface of a glass substrate, and performing high-temperature oxidation and surface fluoroalkylsilane modification to obtain the coating. The water contact angle and the hexadecane contact angle on the surface of the coating are both larger than 150 degrees, and the water roll-off angle and the hexadecane roll-off angle on the surface of the coating are both smaller than 10 degrees. The permeability of the coating to visible light is good. The average light transmittance is larger than 75%. The method is easily available in raw material, simple in technology and good in repeatability. The coating has excellent super-hydrophobicity, superoleophobicity and transmittance.

Description

technical field [0001] The invention describes a method for preparing a transparent super-amphiphobic coating, specifically introducing a transparent function into the super-amphiphobic coating, thereby enhancing the functionality of the super-amphiphobic coating and expanding its application range. Background technique [0002] The superamphiphobic surface has both superhydrophobic and superoleophobic properties, and has stronger functional practicability than superhydrophobic coatings. Due to the particularity of superamphiphobic surface properties, it has great application value in the fields of ships, automobiles, exterior wall coatings, biomedical devices, and solar devices. In recent years, the research on super-amphiphobic materials has made great progress in both research fields and preparation methods. The in-depth research on super-amphiphobic properties has greatly enhanced people's demand for materials with special surface wettability. [0003] The transparent s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/22
Inventor 门学虎张招柱杨进朱小涛
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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