Preparation method for hydrophobic coating and product and application thereof

A technology of hydrophobic coating and deionized water, applied in the direction of coating, can solve problems such as poor hydrophobic performance, and achieve the effects of simple preparation method, great application prospect and strong controllability

Inactive Publication Date: 2019-04-23
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of existing coatings with poor hydrophobic properties, the purpose of the present invention is to provide a method for preparing hydrophobic coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of hydrophobic coating is prepared according to the following method:

[0019] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 100), add high-purity zinc powder into deionized water, stir, and age for 12 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 900°C and keep it for 60 minutes, and the white powder obtained is four-needle zinc oxide.

[0020] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:100), and add various additives (the additives are defoamers and dispersants) , and stir it evenly to obtain a hydrophobic coating.

Embodiment 2

[0022] A kind of hydrophobic coating is prepared according to the following method:

[0023] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 500), add high-purity zinc powder into deionized water, stir, and age for 6 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 950°C and keep it for 45 minutes, and the obtained white powder is four-needle zinc oxide.

[0024] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:50), and add various additives (auxiliaries include leveling agent, drier and film-forming aids), and stir it evenly to obtain a hydrophobic coating.

Embodiment 3

[0026] A kind of hydrophobic coating is prepared according to the following method:

[0027] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 200), add high-purity zinc powder into deionized water, stir, and age for 4 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 1000°C, and keep it for 30 minutes. The white powder obtained is four-needle zinc oxide.

[0028] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:20), and add various additives (the additives include defoaming agent, leveling agent and dispersant), and stir it evenly to obtain a hydrophobic coating.

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PUM

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Abstract

The invention relates to a preparation method for hydrophobic coating and a product and an application thereof. The preparation method comprises the following steps: accurately weighing high-purity zinc powder and deionized water, adding the zinc powder to the deionized water, stirring and ageing, after drying, placing in a porcelain boat and placing in a high-temperature furnace, heating for a period of time, to obtain tetrapod-like zinc oxide; and adding the tetrapod-like zinc oxide to organic silicon resin, and adding an assistant, uniformly stirring to obtain the hydrophobic coating. The hydrophobic coating prepared by using the method is capable of, through the tetrapod-like zinc oxide, providing a micro-nano microscopic structure, and through matching low surface energy of the organic silicon resin, enabling a coating layer to achieve a better hydrophobic state, and achieving waterproof self-cleaning functions, and has great application prospect.

Description

technical field [0001] The invention belongs to the field of application of nanometer materials, and in particular relates to a preparation method of a hydrophobic coating and its product and application. Background technique [0002] In recent years, with the continuous improvement of people's quality of life requirements and the continuous enhancement of environmental protection and energy conservation awareness, surfaces with self-cleaning functions have been developed rapidly. A self-cleaning surface refers to a surface on which pollutants or dust on the surface can automatically fall off or be degraded under the action of gravity, rain, wind and other external forces. Hydrophobic coatings often refer to a class of low surface energy coatings whose static water contact angle θ of the coating film on a smooth surface is greater than 90°. Important features such as preventing current conduction have extremely broad application prospects in scientific research, production,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/61
CPCC08K2201/011C09D183/04C09D7/61C09D7/70C08K7/08
Inventor 何丹农徐少洪林琳王敬锋王岩岩金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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