Preparation method of superhydrophobic surface material

A super-hydrophobic surface and transparent technology, which is applied in the field of preparation of super-hydrophobic surface materials, can solve the problems of difficult control of thickness, powder shedding, and high requirements on the surface of substrates, and achieve the effect of simple and feasible process

Active Publication Date: 2013-04-24
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Common methods for preparing superhydrophobic surfaces include: chemical etching, template method, electrochemical method, self-assembly method, electrospinning method, etc. Usually, these methods have relatively high requirements on the surface of the substrate and are not universal difficult to mass produce
Chinese patent CN 101456016A uses a spraying method to prepare a superhydrophobic surface, and the superhydrophobic film obtained by the spraying method is relatively thick, and the thickness is difficult to control
Oxide powder is a common material used to prepare super-hydrophobic surfaces. The super-hydrophobic effect can be achieved by coating hydrophobic powder on the substrate, but the powder is prone to fall off during the preparation process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for a transparent super-hydrophobic surface material, comprising the following steps:

[0024] Step 1: Prepare superhydrophobic powder suspension, disperse 50nm silicon dioxide powder in acetone solution and configure 200g of suspension with a mass percentage of 0.01%, add 0.1g sodium dodecylsulfonate and 0.1g Benzoyl peroxide, ultrasonically dispersed for 30 minutes to mix the powder and additives and disperse evenly;

[0025] Step 2: Clean the 30cm×30cm glass surface with deionized water and dry it, then spray 117g of the suspension obtained in step 1 evenly on the surface of the substrate and dry it;

[0026] Step 3: In a closed container, pass the steam of styrene and methyl methacrylate at 70°C to the glass surface after step 2 with nitrogen as a carrier, keep it for 30 minutes, and undergo chemical vapor deposition polymerization to obtain a transparent hydrophobic layer. The thickness is 150nm. After testing, the contact angle of water phas...

Embodiment 2

[0028] A preparation method for a transparent super-hydrophobic surface material, comprising the following steps:

[0029] Step 1: Disperse the 50nm silicon dioxide powder in the acetone solution to configure the superhydrophobic powder suspension to form 200g of a suspension with a mass percentage of 0.02%. Add 0.1g sodium dodecylsulfonate and 0.1g superhydrogen Oxidize benzoyl, ultrasonically disperse for 30 minutes to mix the powder and additives and disperse evenly;

[0030] Step 2: Clean the glass surface of 30cm×30cm with deionized water and dry it, then spray 60g of the suspension obtained in step 1 evenly on the surface of the substrate and dry it;

[0031] Step 3: In a closed container, let the vapor of styrene and methyl methacrylate at 80°C flow to the glass surface after step 2, keep it for 30 minutes, and undergo chemical vapor deposition polymerization to obtain a transparent hydrophobic layer with a thickness of 400nm. After testing, the contact angle of the wa...

Embodiment 3

[0033] A preparation method for a transparent super-hydrophobic surface material, comprising the following steps:

[0034] Step 1: Configure superhydrophobic powder suspension

[0035] Disperse 50nm silicon dioxide powder in acetone solution to form 200g of a suspension with a mass percentage of 0.05%, add 0.1g sodium dodecylsulfonate and 0.1g benzoyl peroxide at the same time, and ultrasonically disperse for 30min to make the powder The body is mixed with additives and dispersed evenly;

[0036] Step 2: Clean the glass surface of 30cm×30cm with deionized water and dry it, then spray 20g of the suspension obtained in step 1 evenly on the surface of the substrate and dry it;

[0037] Step 3: In a closed container, let the vapor of styrene and methyl methacrylate at 90°C flow to the glass surface after step 2, keep it for 30 minutes, and undergo chemical vapor deposition polymerization to obtain a transparent hydrophobic layer with a thickness of 1 μm. After testing, the conta...

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Abstract

The invention discloses a preparation method of a superhydrophobic surface material. The method comprises steps of: dispersing a superhydrophobic powder in a solvent, adding an initiator and mixing evenly; spraying the evenly mixed suspension onto a surface of a substrate; and polymerizing a polymer monomer to the sprayed substrate through chemical vapor deposition to obtain a transparent superhydrophobic surface. Compared with the prior art, the superhydrophobic surface material prepared by the preparation method provided by the invention is suitable for a variety of substrates, and can be widely applied to preparation of water fog resistant and self-cleaning materials. The process provided by the invention is simple, practical and suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic surface material preparation, and in particular relates to a preparation method of superhydrophobic surface material. Background technique [0002] In nature, many plant surfaces and waterfowl feathers are superhydrophobic. The self-cleaning effect brought by this superhydrophobicity has aroused great interest of researchers. The surface of these animals and plants generally secretes hydrophobic oil or wax, and the surface is very rough, and the contact angle with water can reach more than 150°. Taking the lotus leaf as an example, there are many micron-scale papillae on the surface of the lotus leaf, and these papillae and the spaces between the papillae are covered by many nano-scale wax crystals. This micro-nano secondary structure not only reduces the solid-liquid contact area, but also makes the contact area between the surface and pollutants smaller, and the force is weaker. When t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/44B05D5/08
Inventor 余松林
Owner HEFEI GENIUS NEW MATERIALS
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