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A kind of transparent superhydrophobic coating and its preparation method and application

A super-hydrophobic coating and transparent technology, applied in coatings and other directions, can solve problems such as poor light transmission, and achieve the effects of improving safety, water repellency, and light transmission

Active Publication Date: 2021-07-13
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing superhydrophobic materials are prepared by adding white fillers to obtain the surface microstructure, but this method leads to the formation of a white coating surface, which makes the light transmittance poor

Method used

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  • A kind of transparent superhydrophobic coating and its preparation method and application

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preparation example Construction

[0026] The preparation method of transparent superhydrophobic coating provided by the invention may further comprise the steps:

[0027] Such as figure 1 As shown in step S101, ethyl silicate is added into the solvent, then a fluorine-containing silane coupling agent is added, and stirred evenly to obtain the first component, wherein the stirring time is 0.5-1.5 hours. In this step, the fluorine-containing silane coupling agent is selected from one or a combination of tridecafluorooctyltriethoxysilane and heptadecafluorodecyltriethoxysilane; in this step, the solvent A combination of one or more selected from ethyl acetate, ethanol, propanol, n-butanol, and ethylene glycol.

[0028] Such as figure 1 As shown in step S103, the catalyst is uniformly dispersed in water and a solvent to prepare the second component. Wherein, catalyst is selected from acid catalyst or basic catalyst, for example, acid catalyst is selected from the combination of one or more in oxalic acid, phosp...

Embodiment 1

[0034] Add 1 g of ethyl silicate to 300 g of ethanol solvent, then add 1 g of tridecafluorooctyltriethoxysilane, and stir mechanically for 1 h to obtain the first component; then add the second component to the first component dropwise, The second component is a mixture of 12g of ammonia water, 25g of water and 100g of ethanol. Stirring is continued for 2 hours to obtain a transparent sol, which is then applied to the glass surface by scraping.

Embodiment 2

[0036] Add 1g of ethyl silicate to 300g of ethanol solvent, then add 1g of tridecafluorooctyltriethoxysilane, stir mechanically for 1h to obtain the first component, then add the second component to the first component dropwise, The second component is a mixture of 12g of phosphoric acid, 25g of water and 100g of ethanol. Stirring is continued for 12 hours to obtain a transparent sol, which is then applied to the glass surface by spraying.

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Abstract

The invention provides a transparent super-hydrophobic coating and its preparation method and application, comprising: adding ethyl silicate into a solvent, then adding a fluorine-containing silane coupling agent, and stirring evenly to obtain the first component; Dispersing in water and a solvent to prepare the second component; adding the second component to the first component and stirring evenly to obtain a sol mixture; and applying the sol mixture to the surface of the substrate to prepare a transparent super-hydrophobic coating. The present invention adopts sol-gel method to prepare SiO 2 , forming SiO 2 Uniformly dispersed in the sol to generate nano-sized SiO 2 , fluorine-containing silane coupling agent for SiO 2 Grafting surface modification to form fluorinated SiO 2 Particles self-assemble after coating to form a low surface energy, transparent and super-hydrophobic surface with micro-nano structure, which greatly improves the light transmission of the coating.

Description

technical field [0001] The present invention relates to a coating, more specifically, to a transparent super-hydrophobic coating and its preparation method and application. Background technique [0002] Wettability is an important property of a solid surface, and is generally characterized by the contact angle between a liquid droplet and a solid surface. When the contact angle between a water droplet and a solid surface is greater than 150° and the rolling angle is less than 10°, the solid surface is called a superhydrophobic surface. [0003] However, the generally prepared superhydrophobic surfaces are often opaque, which is caused by too large surface roughness during the preparation process. When studying the preparation of transparent superhydrophobic coatings, in order to make the coatings have good light transmission, the influence of surface roughness on light scattering should be minimized, and surface roughness is necessary for superhydrophobic properties. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00
CPCC03C17/23C03C17/30C09D1/00
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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