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Large-scale preparation method of transparent super-hydrophobic/super-amphiphobic coating

A super-hydrophobic and super-amphiphobic technology, used in coatings, devices for coating liquids on surfaces, special surfaces, etc., to achieve the effects of low cost, excellent super-hydrophobic/super-amphiphobic performance, and a wide range of applications

Inactive Publication Date: 2017-06-06
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

[0009] The purpose of the present invention is to solve the problems existing in the performance and technology of the existing transparent superhydrophobic or superamphiphobic coatings, and to provide a large-scale preparation method for transparent superhydrophobic or superamphiphobic coatings

Method used

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  • Large-scale preparation method of transparent super-hydrophobic/super-amphiphobic coating
  • Large-scale preparation method of transparent super-hydrophobic/super-amphiphobic coating
  • Large-scale preparation method of transparent super-hydrophobic/super-amphiphobic coating

Examples

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Effect test

Embodiment 1

[0031]Weigh 0.5g of attapulgite, add it into a 100mL Erlenmeyer flask, then measure 34mL of ethanol, 2mL of ammonia water and 14mL of deionized water, stir magnetically for 10min, and sonicate for 10min. Then measure 2.1mL tetraethyl orthosilicate and 5.2mL methyltrimethoxysilane, add them into the Erlenmeyer flask, stir and react at room temperature for 16 hours to obtain a translucent jelly-like gel; dilute 50 times with absolute ethanol, and After 10 min, a superhydrophobic transparent suspension was obtained. Measure 100 mL of super-hydrophobic transparent suspension, control the spraying pressure to 0.3MPa, spraying distance at 40cm, and spray on the glass surface of 50cm×50cm to obtain transparent superhydrophobic glass (see figure 1 ).

[0032] The light transmittance of transparent superhydrophobic glass is 88.6% (600nm); the contact angle of 5µL water droplets is 162°, and the rolling angle is 3°; 10kPa water column is washed for 10min, soaked in saturated sodium chl...

Embodiment 2

[0034] Weigh 1.0 g of silica nanoparticles and add it into a 250 mL Erlenmeyer flask, then measure 84 mL of ethanol, 2 mL of acetic acid and 14 mL of deionized water, stir magnetically for 10 min, and sonicate for 20 min. Then measure 1.2mL tetraethyl orthosilicate, 0.5mL aminopropyltriethoxysilane and 7.2mL hexadecyltrimethoxysilane, add them into the Erlenmeyer flask, stir and react at 40°C for 12h to obtain a translucent jelly It was diluted 70 times with absolute ethanol, and after ultrasonication for 10 min, a superhydrophobic transparent suspension was obtained. Measure 2L of super-hydrophobic transparent suspension, control the spraying pressure to 0.5MPa, and the spraying distance to 100cm, and spray it on three pieces of 1m×1m glass surfaces within 30min to obtain 3m 2 Transparent super-hydrophobic glass (digital photo, see figure 2 ).

[0035] The light transmittance of transparent superhydrophobic glass is 89.6% (600nm); the contact angle of 5µL water droplet is ...

Embodiment 3

[0037] Weigh 1.0g of graphene oxide and add it into a 500mL round bottom flask, then measure 180mL of ethanol, 50mL of ethylene glycol, 1mL of hydrochloric acid and 19mL of deionized water, stir magnetically for 10min, and sonicate for 10min. Then measure 5mL of methyltriethoxysilane, 0.2mL of aminopropyltriethoxysilane, 2.0mL of ethyl orthosilicate and 9mL of dodecyltrimethoxysilane, and add them to a round-bottomed flask at 50°C The reaction was stirred for 8 hours to obtain a brown jelly-like gel; diluted 100 times with absolute ethanol and ultrasonicated for 10 min, a superhydrophobic transparent suspension was obtained. Measure 300mL of super-hydrophobic transparent suspension, control the spraying pressure to 0.4MPa, and the spraying distance to 120cm, and spray it on the surface of glass, marble, wood and aluminum alloy of 1m×1m within 30min, and get transparent superhydrophobic coating on the 4 kinds of substrate materials. Floor. Or immerse 1m×1m polyester fabric and...

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Abstract

The invention discloses a large-scale preparation method of a transparent super-hydrophobic / super-amphiphobic coating. The method comprises the steps of ultrasonically dispersing nano particles into an alcohol-water mixed system and carrying out hydrolysis and condensation reaction on the nano particles and fluoride-free or fluorine-containing organosilane under the acid or alkali catalysis action to prepare a transparent suspension liquid of a fluoride-free or fluorine-containing organosilane polymer-nano particle compound; and applying the transparent suspension liquid of the compound on the surface of a substrate material through spraying or dip-coating to obtain the transparent super-hydrophobic / super-amphiphobic coating with good performance. Preparation of the transparent super-hydrophobic / super-amphiphobic coating of 10-100m<2> can be completed within an hour; large-scale preparation of the large-area transparent super-hydrophobic / super-amphiphobic coating is achieved for the first time; the preparation method is low in cost and simple in process; and the prepared coating has excellent super-hydrophobic or super-amphiphobic property, relatively good mechanical stability, chemical stability and environment stability, and has a wide application prospect.

Description

technical field [0001] The invention relates to the preparation of a superhydrophobic or superamphiphobic coating, in particular to a large-scale preparation method of a transparent superhydrophobic or superamphiphobic coating, and belongs to the technical field of surface bionic coating preparation. Background technique [0002] The lotus leaf has been known in China as "coming out of mud without staining" since ancient times. The water droplets are in the Cassie-Baxter state on the surface of the lotus leaf, which can roll off the surface of the lotus leaf and take away the particle pollutants on the surface of the lotus leaf. Therefore, the lotus leaf has a magical self-cleaning effect. Inspired by the self-cleaning effect of lotus leaves, the research on biomimetic superhydrophobic coatings has received extensive attention, and there have been a large number of reports on superhydrophobic coatings. Studies have shown that superhydrophobic coatings can be prepared by co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/08C09D7/12B05D5/08C08G77/24C08G77/26C08G77/04
CPCC09D183/04B05D5/08B05D5/083B05D2518/10C08G77/04C08G77/24C08G77/26C08K3/04C08K3/346C08K3/36C08K2201/011C08K2201/014C09D7/61C09D183/08
Inventor 张俊平李步成高子茜于勃
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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