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Superhydrophobic coatings and methods of making and using the same

A super-hydrophobic coating and water-based technology, applied in coatings and other directions, can solve the problems of strict preparation requirements for super-hydrophobic coatings, failure to large-scale application, complex process and process, and to increase the scope of use, widely popularize and use , the effect of low operating cost

Active Publication Date: 2018-05-15
BEIJING NEATRITION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many reports on the preparation of superhydrophobic coatings in academic literature, but this technology has not yet been applied on a large scale
The reason is that the preparation requirements of the super-hydrophobic coating are very harsh. On the one hand, the above-mentioned micro-nano composite structure that plays a key role is very fragile, easily damaged by external effects, and the use strength is insufficient; on the other hand, the process of preparing this coating, The process is complicated, which makes the production cost too high and it is difficult to apply on a large scale

Method used

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  • Superhydrophobic coatings and methods of making and using the same
  • Superhydrophobic coatings and methods of making and using the same
  • Superhydrophobic coatings and methods of making and using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Prepare the bottom material of the present invention according to the following formula and ratio:

[0058]

[0059] Prepare the hydrophobic material according to the following formula and ratio:

[0060]

[0061] Preparation:

[0062] Step 1: Mix the above primers and stir at 20°C for 12 hours to prepare a primer coating liquid;

[0063] Step 2: Add 2g of octadecyltrimethoxysilane in the above hydrophobic material to 95.9g of ethanol, stir at room temperature for 2h, then add 2g of nano silicon oxide (25nm) and 0.1g of hydrochloric acid, and stir at 70°C for 12h . Cool to room temperature to prepare a hydrophobic material coating solution.

[0064] Instructions:

[0065] Step 1: Spray the coating solution of the above-mentioned primer on the glass substrate, and let it stand at room temperature until the solvent evaporates completely to prepare a resin buffer layer;

[0066] Step 2: Spray the coating solution of the above-mentioned hydrophobic material on th...

Embodiment 2

[0069] Prepare the bottom material of the present invention according to the following formula and ratio:

[0070]

[0071] Prepare the hydrophobic material according to the following formula and ratio:

[0072]

[0073] Preparation:

[0074] Step 1: Mix the above primers and stir at 20°C for 24 hours to prepare a primer coating solution;

[0075] Step 2: Add 15g of tridecafluorooctyltrimethoxysilane in the above-mentioned hydrophobic material to 78.5g of acetone, stir at room temperature for 1h, then add 3g of nano-silicon oxide (15nm), 2g of nano-silicon oxide (60nm), 1g Nano silicon oxide (200nm) and 0.5g acetic acid were stirred and reacted at 50°C for 24h. Cool to room temperature to prepare a hydrophobic material coating solution.

[0076] Instructions:

[0077] Step 1: Spray the coating solution of the above-mentioned primer on the steel substrate, and let it stand at room temperature until the solvent evaporates completely to prepare a resin buffer layer;

...

Embodiment 3

[0081] Prepare the bottom material of the present invention according to the following formula and ratio:

[0082]

[0083] Prepare the hydrophobic material according to the following formula and ratio:

[0084]

[0085]

[0086] Preparation:

[0087] Step 1: Mix the above primers and stir at 50°C for 12 hours to prepare a primer coating solution;

[0088] Step 2: Dissolve octadecyltrichlorosilane in 98.9 g of toluene in the hydrophobic material above, and stir for 0.5 h. Subsequently, 0.5 g of nano silicon oxide (15 nm) and 0.1 g of sulfuric acid were added, and the reaction was stirred at 110° C. for 0.5 h. After cooling to room temperature, a hydrophobic material coating solution was obtained.

[0089] Instructions:

[0090] Step 1: Spray the coating solution of the above-mentioned primer on the glass substrate, and let it stand at room temperature until the solvent evaporates completely to prepare a resin buffer layer;

[0091] Step 2: Spray the coating solut...

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Abstract

The invention discloses a superhydrophobic coating and a preparation and use method thereof, belonging to the technical field of superhydrophobic coatings. The superhydrophobic coating is composed of a primer and a hydrophobic material, and the primer is composed of the following components by mass percentage: 3% to 12% of thermoplastic elastomer, 5% to 10% of petroleum resin, 0.1% to 0.5% of inorganic filler, ultraviolet Light stabilizer 0.1%~0.5%, organic solvent 77%~91.8%, hydrophobic material is composed of the following components by mass percentage: nano-inorganic particles 0.5%~10%, coupling agent 0.5%~15%, catalyst 0.1%~ 0.5%, 74.5% to 98.9% of organic solvent, said; the coupling agent is one or more of silane coupling agent, titanate coupling agent or aluminate coupling agent. The superhydrophobic coating prepared by the invention has relatively high hardness and wear resistance, prolongs the service life, has a simple preparation process, is easy to implement, and can be widely popularized and used.

Description

technical field [0001] The invention relates to the technical field of super-hydrophobic coatings, in particular to a super-hydrophobic coating and methods for preparing and using the same. Background technique [0002] The phenomenon that the lotus leaf emerges from the mud without being stained has been discovered long ago. Research by scientists has found that the surface of the lotus leaf has a composite structure in both micron and nanometer scales, which endows the surface of the lotus leaf with super-hydrophobic properties. People modeled the micro-nano composite structure of the lotus leaf to build an artificial super-hydrophobic coating. When a water drop falls on a surface covered with a superhydrophobic coating, a spherical water droplet is formed, with a contact angle usually greater than 150° and a roll angle less than 10°. In this state, water droplets cannot infiltrate or penetrate into the surface and contact the substrate, and roll off the surface when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D153/02C09D7/61C09D7/62C09D7/63C09D157/02
Inventor 刘嘉贤李延生肖鹏飞
Owner BEIJING NEATRITION TECH CO LTD