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Preparation method of super-hydrophobic surface of glass

A technology of hydrophobic surface and glass super-hydrophobicity, applied in the field of preparation of glass super-hydrophobic surface, can solve the problems of poor adhesion between the micro-nano double-rough structure layer and the glass substrate and insufficient hydrophobicity, so as to improve the surface hydrophobicity and improve the Adhesive force and tight bonding effect

Active Publication Date: 2013-09-11
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the current superhydrophobic SiO 2 Due to the poor adhesion between the micro-nano double-rough structure layer and the glass substrate, and insufficient hydrophobicity, the present invention proposes a method for preparing a super-hydrophobic surface of glass. The preparation method of the super-hydrophobic surface is simple and low in cost. The hydrophobic coating not only It has excellent hydrophobicity, and the excellent bonding force between the coating and the glass can ensure that the coating maintains its superhydrophobicity for a long time

Method used

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Examples

Experimental program
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Embodiment 1

[0055] (1) Preparation of fluorosilicone modified acrylate emulsion;

[0056] (a) The components of the fluorosilicon-modified acrylate emulsion are shown in Table 1 below. Mix alkyl methacrylate and alkyl acrylate in the step components to make monomer I, hydroxyalkyl acrylate or hydroxyalkyl methacrylate, organosiloxane, fluorine-containing alkyl acrylate or Alkyl fluoromethacrylate is mixed to make monomer II;

[0057]

[0058] (b) Add 55% of water in step (a), 55% of the mass of the mixture of SDS and AMPS-Na, 60% of potassium persulfate, and sodium bicarbonate into the reaction kettle, stir for 15 minutes and then heat up to 75 ° C, take 10% of the monomer I was added to the reactor in 15 minutes, and kept for 15 minutes after the dropwise addition, and then 50% of the monomer I was added dropwise in the reactor within 2.5 hours, and kept for 15 minutes after the dropwise addition, to obtain Lotion;

[0059] (c) Dissolve the remaining emulsifier and initiator in the...

Embodiment 2

[0069] (1) Preparation of fluorosilicone modified acrylate emulsion;

[0070] (a) The components of the fluorosilicon-modified acrylate emulsion are shown in Table 2 below. Mix alkyl methacrylate and alkyl acrylate in the step components to make monomer I, hydroxyalkyl acrylate or hydroxyalkyl methacrylate, organosiloxane, fluorine-containing alkyl acrylate or Alkyl fluoromethacrylate is mixed to make monomer II;

[0071]

[0072](b) Combine 65% of water, LAS and AMPS-NH in step (a) 4 Add 65% and 70% of the mixture's mass of ammonium persulfate and potassium bicarbonate into the reaction kettle, stir for 20 minutes and then heat up to 78 °C, take 20% of monomer I and add it to the reaction kettle in 20 minutes, keep it warm after the dropwise addition After 20 minutes, add 60% of the monomer I dropwise to the reaction kettle within 3.5 hours, keep the temperature for 20 minutes after the dropwise addition, and obtain the emulsion;

[0073] (c) Dissolve the remaining emul...

Embodiment 3

[0084] (1) Preparation of fluorosilicone modified acrylate emulsion;

[0085] (a) The components of the fluorosilicon-modified acrylate emulsion are shown in Table 3 below. Mix alkyl methacrylate and alkyl acrylate in the step components to make monomer I, hydroxyalkyl acrylate or hydroxyalkyl methacrylate, organosiloxane, fluorine-containing alkyl acrylate or Alkyl fluoromethacrylate is mixed to make monomer II;

[0086]

[0087] (b) Add 55% of water in step (a), 75% of the mass of the mixture of DSB and HPMAS, 75% of sodium persulfate, and potassium dihydrogen phosphate into the reaction kettle, stir for 15 minutes and then heat up to 80 °C, take a single 15% of monomer I was added to the reactor in 30 minutes, and after the dropwise addition was completed, it was kept warm for 30 minutes, and then 60% of monomer I was added dropwise into the reactor within 4 hours, and after the dropwise addition was completed, it was kept warm for 25 minutes to obtain Lotion;

[0088...

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Abstract

The invention relates to the field of super-hydrophobic surfaces. In order to solve the problems of poor binding force between the existing super-hydrophobic SiO2 micro-nano double rough structural layer and a glass substrate and insufficient hydrophobicity, the invention provides a preparation method of the super-hydrophobic surface of glass. The method comprises the following steps of: firstly, preparing fluorosilicone modified acrylic ester emulsion; secondly, preparing modified SiO2 sol; and finally preparing the super-hydrophobic surface of glass. The preparation method is simple and low in cost; a hydrophobic coating has excellent hydrophobicity and has excellent binding force with the glass; and the coating can maintain super-hydrophobicity for a long time.

Description

technical field [0001] The invention relates to the field of superhydrophobic surfaces, in particular to a preparation method and application of a glass superhydrophobic surface. Background technique [0002] Surface wettability is one of the important properties of solid surfaces. When the contact angle between solid surface and water is greater than 150°, the surface is superhydrophobic. Professors W.Barthlott and C.Neinhuis of the University of Bonn in Germany, through the observation of the microstructure of the surface of plant leaves, believe that the existence of micron-sized papillae and surface wax on the rough surface makes it super-hydrophobic. On the basis of this research, Academician Jiang Lei and others found that there are nanostructures on the microstructured papillae on the surface of the lotus leaf, revealing the cause of the lotus leaf effect. These findings provide a development direction for the preparation and research of superhydrophobic surfaces. D...

Claims

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Application Information

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IPC IPC(8): C03C17/42C08F220/14C08F220/18C08F230/08C08F220/22C08F220/28C08F2/26C08F2/24
Inventor 吴连斌裴勇兵钟颖汤龙程陈遒蒋剑雄来国桥
Owner HANGZHOU NORMAL UNIVERSITY
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