A kind of rapid preparation method of superhydrophobic paint surface

A super-hydrophobic and paint technology, which is applied to devices for coating liquids on surfaces, special surfaces, coatings, etc., can solve problems such as difficulties, and achieve the effects of fast preparation, simple process and large molding area.

Active Publication Date: 2020-06-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a rapid preparation method for the superhydrophobic paint surface, which solves the difficult problems raised in the background technology

Method used

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  • A kind of rapid preparation method of superhydrophobic paint surface
  • A kind of rapid preparation method of superhydrophobic paint surface
  • A kind of rapid preparation method of superhydrophobic paint surface

Examples

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preparation example Construction

[0028] A kind of fast preparation method of superhydrophobic paint surface of the present invention, it comprises the steps:

[0029] Step 1. Place the photocurable resin film with a regular shape micron-scale rough surface structure in the aqueous solution of diethylene glycol diacrylate and sodium chloride and soak for 3-20min; adsorb on the photocurable resin film Positive charge for improved release and release properties

[0030] Step 2: Take out the photocurable resin film, completely immerse it in a polytetrafluoroethylene solution with a mass fraction of 3%-10%, soak for 5-30min, and assemble the polytetrafluoroethylene nanoparticles into the photocurable resin film rough surface structure; preferably, the mass fraction of polytetrafluoroethylene solution is 4%-8%, more preferably, the mass fraction of polytetrafluoroethylene solution is 5%-8%, for example, the polytetrafluoroethylene The mass fraction of the vinyl fluoride solution is 5%, 6%, 7% or 8%.

[0031] Step...

Embodiment 1

[0043] A kind of rapid preparation method of superhydrophobic paint surface, it comprises the steps:

[0044] Step 1, ultrasonically vibrate the diethylene glycol diacrylate and the sodium chloride in advance for 20 minutes;

[0045] Step 2, placing the photocurable resin film with a regularly arranged pit structure in a diethylene glycol diacrylate aqueous solution with a mass fraction of 0.08% and soaking it in an aqueous sodium chloride solution with a concentration of 0.05mmol / L for 5 minutes; The square side length a of the pit structure is 12 μm, the spacing w is 11 μm, and the depth h is 9 μm;

[0046] Step 3, ultrasonically stirring the polytetrafluoroethylene solution for 40 minutes;

[0047] Step 4, taking out the photocurable resin film, completely immersing it in a polytetrafluoroethylene solution with a mass fraction of 5%, soaking for 10 minutes, and assembling the polytetrafluoroethylene nanoparticles onto the rough surface structure of the photocurable resin f...

Embodiment 2

[0051] A kind of rapid preparation method of superhydrophobic paint surface, it comprises the steps:

[0052] Step 1, ultrasonically vibrate the diethylene glycol diacrylate and the sodium chloride in advance for 20 minutes;

[0053] Step 2, placing the photocurable resin film with a regularly arranged pit structure in a diethylene glycol diacrylate aqueous solution with a mass fraction of 0.08% and soaking it in an aqueous sodium chloride solution with a concentration of 0.05mmol / L for 5 minutes; Wherein, the square side length a of the pit structure is 11 μm, the spacing w is 12 μm, and the depth h is 12 μm;

[0054] Step 3, ultrasonically stirring the polytetrafluoroethylene solution for 40 minutes;

[0055] Step 4, taking out the photocurable resin film, completely immersing it in a polytetrafluoroethylene solution with a mass fraction of 5%, soaking for 10 minutes, and assembling the polytetrafluoroethylene nanoparticles onto the rough surface structure of the photocurab...

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Abstract

The invention discloses a quick preparation method for a super-hydrophobic paint surface. The quick preparation method comprises the following steps that 1, an optically solidified resin film with a regular-shaped micron rough surface structure is soaked into an aqueous solution of phthalate diethylene glycol diacrylate and sodium chloride for 3-20 min; 2, the optically solidified resin film is taken out and completely soaked into a polytetrafluoroethylene solution with the mass portion being 3-10% for 5-30 min; 3, the optically solidified resin film is washed by ultrapure water and dried for5-20 min; and 4, the rough surface structure of the optically solidified resin film is impressed onto paint on the surface of a substrate, pressure drying is conducted for 18-36 h, the optically solidified resin film is removed, and the super-hydrophobic paint surface is obtained. The quick preparation method for the super-hydrophobic paint surface has the advantages of being simple and convenientin technology, large in forming area, quick in preparation speed, wide in application range and the like, and has the good engineering application prospects.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a rapid preparation method for a superhydrophobic paint surface. Background technique [0002] Since the 1990s, the superhydrophobic construction of material surfaces has been a continuous hot issue. The superhydrophobic surface has a self-cleaning function, which is called the lotus leaf effect. Thanks to this function, the superhydrophobic surface is often used for anti-icing, anti-snow, anti-pollution, anti-corrosion and self-cleaning. [0003] The hydrophobic properties of the material surface are determined by the surface free energy of the surface material and the surface microstructure. Therefore, the preparation of the superhydrophobic surface starts from two aspects: reducing the surface free energy of the surface material and constructing the hydrophobic microstructure. At present, there are many ways to construct super-hydrophobic surfaces. Among th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/08B05D5/02
CPCB05D5/02B05D5/083
Inventor 庞作波翁鼎汪家道
Owner TSINGHUA UNIV
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