Method for preparing superhydrophobic coating layer through composite of inorganic nano-particles with different average particle sizes

A technology of inorganic nano-particles and super-hydrophobic coatings, applied in the field of self-cleaning materials and new materials, can solve the problems of reduced application range, high cost, complex process, etc., achieve good application prospects, simplify production industry and production costs.

Inactive Publication Date: 2016-05-25
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these existing technical solutions are complicated in process and high in cost. Before forming a superhydrophobic

Method used

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  • Method for preparing superhydrophobic coating layer through composite of inorganic nano-particles with different average particle sizes
  • Method for preparing superhydrophobic coating layer through composite of inorganic nano-particles with different average particle sizes
  • Method for preparing superhydrophobic coating layer through composite of inorganic nano-particles with different average particle sizes

Examples

Experimental program
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Example Embodiment

[0030] Example 1

[0031] This embodiment is a method for preparing a super-hydrophobic coating by compounding inorganic nanoparticles with different average particle sizes, including the following steps: taking 0.5 g of SiO with an average particle size of 100 nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magnetically stirred at 5000 rpm for 30 min to obtain SiO with an average particle size of 200 nm. 2 Uniform dispersion liquid A; take 1.5g of SiO with an average particle size of 20nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magnetically stirred at 5000 rpm for 30 min to obtain SiO with a particle size of 30 nm. 2 Uniform dispersion liquid B; take 0.5g of SiO with an average particle size of 5nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magne...

Example Embodiment

[0032] Example 2

[0033] This embodiment is a method for preparing a super-hydrophobic coating by compounding inorganic nanoparticles with different average particle sizes, including the following steps: taking 0.5 g of TiO with an average particle size of 300 nm 2The nanoparticles were dispersed in 50 mL of anhydrous ethanol, ultrasonically dispersed for 30 min and taken out, and magnetically stirred at 5000 rpm for 30 min to obtain TiO with an average particle size of 300 nm. 2 Uniform dispersion liquid A; take 1.5g of TiO with an average particle size of 50nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, ultrasonically dispersed for 30 min, taken out, and magnetically stirred at 5000 rpm for 30 min to obtain TiO with a particle size of 50 nm. 2 Uniform dispersion liquid B; take 0.5g of TiO with an average particle size of 10nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, ultrasonically dispersed for 30 min, taken out, and magnetic...

Example Embodiment

[0034] Example 3

[0035] This embodiment is a method for preparing a superhydrophobic coating by compounding inorganic nanoparticles with different average particle sizes, including the following steps: taking 0.5 g of TiO with an average particle size of 200 nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magnetically stirred at 5000 rpm for 30 min to obtain TiO with an average particle size of 200 nm. 2 Uniform dispersion liquid A; take 2.5g of TiO with an average particle size of 30nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magnetically stirred at 5000 rpm for 30 min to obtain TiO with a particle size of 30 nm. 2 Uniform dispersion liquid B; take 0.5g of TiO with an average particle size of 10nm 2 The nanoparticles were dispersed in 50 mL of anhydrous ethanol, taken out after ultrasonic dispersion for 30 min, and magne...

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Abstract

The invention discloses a method for preparing a superhydrophobic coating layer through composite of inorganic nano-particles with different average particle sizes, belongs to the field of novel materials, and in particular, belongs to the field of self cleaning materials. The inorganic nano-particles with different average particle sizes are composited to form a mixed dispersion liquid, then a silane coupling agent is added for hydrophobic modification of the composite nanoparticles in the mixed dispersion liquid under the action of a catalyst, and a composite nanoparticle dispersion liquid having a superhydrophobic property is obtained and acts on various soft or hard substrates through extraction, spraying, drop-coating, spin-coating and other methods to form the superhydrophobic coating layer; the superhydrophobic composite nanoparticle dispersion liquid is gradually diluted according to the proportion and then acts on a transparent material substrate, and the superhydrophobic coating layer having adjustable transparency can be obtained; the superhydrophobic coating layer has the contact angle greater than 160 degrees and the rolling angle of less than 5 degrees. The method is simple in process and is applicable to surface hydrophobic modification of various materials, and the transparency of the superhydrophobic coating layer can be adjusted according to different uses.

Description

technical field [0001] The invention belongs to the field of new materials, in particular to the field of self-cleaning materials, and specifically relates to a method for preparing a superhydrophobic coating with composite particle diameter nanoparticles. Background technique [0002] Surfaces with superhydrophobic properties are very common in nature, such as the leaves of lotus, the horns of water striders, the wings of butterflies, and the silk of spiders. The contact angle formed by water on these surfaces exceeds 150° and the contact hysteresis angle is less than 5°, that is, the water will not wet the surface after contacting this type of surface and will roll off quickly with the slight inclination of the surface. This type of surface is called as a superhydrophobic surface. Due to the wide range of applications of superhydrophobic materials, its waterproof, anti-fog, anti-snow, anti-icing, anti-pollution and self-cleaning properties have extremely important and ext...

Claims

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Application Information

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IPC IPC(8): C09D1/00D06M11/79D06M11/46D21H19/64
Inventor 袁志好高虹段月琴
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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