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Preparation method of transparent super-amphiphobic hot water and hot oil coating

A coating and transparent technology, applied in coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of poor transparency of super-amphiphobic coatings, poor performance of hydrophobic hot water and oil, etc., and achieve excellent stability. performance, improve stability, and efficiently disperse

Inactive Publication Date: 2016-05-11
上海必定化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a transparent super-amphiphobic thermal oil coating to solve the problems of poor transparency and poor performance of the existing super-amphiphobic coating

Method used

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  • Preparation method of transparent super-amphiphobic hot water and hot oil coating

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Experimental program
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Embodiment 1

[0019] First, 10 mg of multi-walled carbon nanotubes with a diameter of 10-20 nm were added to 20 mL of ethanol-water (5:1) reaction system. After ultrasonic dispersion for 30 min, 50 μL of tetraethoxysilane and 0.5 mL of ammonia water were added in turn, and stirred under magnetic force. Hydrolysis and condensation reaction at room temperature for 3 hours to form a stable suspension of carbon nanotubes modified by organosilane cross-linking; then control the spraying pressure to 0.2MPa and the spraying distance to 20cm, and spray 4mL of the suspension on the surface of glass (3×8cm) to form a coating; The coating was then treated in a muffle furnace at 500°C for 3 hours to remove the organic groups of carbon nanotubes and organosilanes to obtain a transparent cross-linked nanostructure; Soak in 40mL ethanol solution of oxysilane for 24h to obtain a transparent super-hydrophobic thermal oil coating. The performance indexes of the coating are shown in Table 1.

Embodiment 2

[0021] First, add 50 mg of single-walled carbon nanotubes to 100 mL of methanol-water (10:1) reaction system, ultrasonically disperse for 10 minutes, then add 1 mL of aminopropyltriethoxysilane and 2 mL of acetic acid, and perform hydrolysis and condensation reaction at room temperature under magnetic stirring 6h to form a stable suspension of carbon nanotubes modified by organosilane crosslinking; then control the spraying pressure to 0.1MPa and the spraying distance to 10cm, and spray 10mL of the suspension on the silicon wafer (10×10cm); Treat the coating in a Furnace for 6 hours to remove the organic groups of carbon nanotubes and organosilanes to obtain transparent cross-linked nanostructures; finally, the cross-linked nanostructures were dissolved in 250 mL ethanol solution containing 100 μL perfluorodecyltrichlorosilane Soak in the middle for 2 hours to get a transparent super-hydrophobic thermal oil coating. The performance indexes of the coating are shown in Table 1. ...

Embodiment 3

[0023] First, add 100mg of multi-walled carbon nanotubes with a diameter of 60-80nm into 50mL of methanol-isopropanol-water (methanol-isopropanol-water=5:5:1) reaction system, ultrasonically disperse for 20min, then add 0.5 mL of hexadecyltriethoxysilane, 0.1 mL of ethyl orthosilicate and 2 mL of ethylenediamine were hydrolyzed and condensed at room temperature for 12 h under magnetic stirring to form a stable suspension of carbon nanotubes modified by organosilane crosslinking; then Control the spraying pressure of 0.2MPa and the spraying distance of 15cm, spray 8mL of the suspension on the ceramic surface (10×10cm); then treat the coating in a muffle furnace at 600°C for 2h to remove the carbon nanotubes and organic silanes. group to obtain a transparent cross-linked nanostructure; finally, the cross-linked nanostructure was soaked in 250 mL of toluene solution containing 50 μL perfluorooctyldimethylchlorosilane for 24 hours to obtain a transparent super-hydrophobic thermal o...

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Abstract

The invention discloses a preparation method of a transparent super-amphiphobic hot water and hot oil coating. The preparation method comprises the following steps of taking a carbon nanotube as a template, constructing a casing layer on the surface of the carbon nanotube by surface crosslinking modification of organosilicone and crosslinking the carbon nanotube to form a crosslinked network structure; removing the carbon nanotube template and functional groups of the organosilicone by thermal treatment to form a transparent crosslinking micro-nano structure; then uniformly modifying the coating by adopting low-concentration perfluorinated alkyl silane through a liquid phase method, and guaranteeing the transparency of the coating while endowing the coating with super-amphiphobic property. Through detection, a contact angle of the coating prepared by the invention to water and n-hexadecane is greater than 155 degrees, and a rolling angle of the coating to the water and the n-hexadecane is smaller than 5 degrees; a contact angle of the coating to boiling water and 80DEG C n-hexadecane is greater than 150 degrees, and a rolling angle of the coating to the boiling water and the 80DEG C n-hexadecane is smaller than 10DEG C; and the light transmittance of the coating in a visible region is greater than 70 percent. The preparation method is suitable for preparing various super-amphiphobic hot water and hot oil coatings which are prepared from high-temperature-resisting substrate materials and have transparent surfaces.

Description

technical field [0001] The invention relates to the preparation of a super-amphiphobic surface, in particular to a method for preparing a transparent super-hydrophobic thermal oil coating, which belongs to the technical field of surface coating preparation. Background technique [0002] Inspired by the self-cleaning effect of lotus leaves, biomimetic superhydrophobic and superoleophobic coatings have developed rapidly in recent years. Superamphiphobic coating refers to the surface on which water droplets and oil droplets have a contact angle greater than 150° and a rolling angle less than 10°. Compared with superhydrophobic coatings, the preparation of superamphiphobic coatings is more difficult, mainly because the surface energy of organic liquids is much lower than that of water. Therefore, the construction of super-amphiphobic coatings relies on finer regulation of the surface micro-nano structure and the use of new materials with substrate surface energy. The existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D1/12
CPCB05D1/12B05D5/08
Inventor 杨俊
Owner 上海必定化工有限公司
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