Preparation method of polymer hydrophobic surface

A hydrophobic surface and polymer technology, which is applied in the field of polymer hydrophobic surface preparation, can solve the problems of preparation of hydrophobic surface, multiple assembly, cumbersome steps, etc., and achieve the effect of uniform surface color, stable performance and simple preparation process

Inactive Publication Date: 2009-06-17
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that the steps are cumbersome, multiple assemblies are required, and there are matching requirements for the assembly material and substrate
[0004] Also found in the search, Zhigang Guo et al. published the article "Stable Biomimetic Super-Hydrophobic Engineering Materials" in "J.Am.Chem.Soc." ("American Chemical Society") (2005, 127, 15670), which proposed A method for preparing superhydrophobic aluminum and aluminum alloys. The specific method is to first use sodium hydroxide solution to etch aluminum and aluminum alloys, and obtain superhydrophobic materials after being modified by perfluorononane and vinyl-terminated polydimethylsiloxane respectively. This method is simple and easy to implement, but its disadvantage is that it needs to etch the surface to be treated first before performing hydrophobic treatment. At the same time, this technology does not explain how to prepare a hydrophobic surface on glass, silicon and other materials.

Method used

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  • Preparation method of polymer hydrophobic surface
  • Preparation method of polymer hydrophobic surface
  • Preparation method of polymer hydrophobic surface

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Weigh 6g of polyphenylene sulfide micropowder, and ultrasonically disperse it in 80mL of a mixed solvent with a volume ratio of water: absolute ethanol: isobutanol = 2:5:1 to make a polymer dispersion;

[0025] (2) Weigh 8 g of polydimethylsiloxane-modified silica hydrophobic micropowder, and ultrasonically disperse it in 120 mL of a mixed solvent with a volume ratio of water: absolute ethanol: isobutanol = 2:5:1, Then add 0.5g of surfactant nonylphenol polyoxyethylene ether, and ultrasonically treat it for 5 minutes to disperse it evenly to make a hydrophobic silica dispersion;

[0026] (3) Mix 80mL of the polymer dispersion and 120mL of the hydrophobic silica dispersion evenly, and then ultrasonically treat them for 5 minutes to disperse them evenly to make a hydrophobic coating;

[0027] (4) Use a spray gun to spray the hydrophobic coating with a pressure of 0.2 MPa onto the tiles that have been washed and dried in advance, then dry the tiles at 80°C for half an ...

Embodiment 2

[0032] (1) Weigh 6g of polyphenylene sulfide micropowder, and ultrasonically disperse it in 60mL of a mixed solvent with a volume ratio of absolute ethanol:isobutanol=1:1 to make a polymer dispersion;

[0033] (2) Weigh 6g of polydimethylsiloxane-modified silicon dioxide hydrophobic micropowder, ultrasonically disperse it in 60mL of a mixed solvent with a volume ratio of absolute ethanol:isobutanol=1:1, and then add 0.5g Surfactant sodium stearate, sonicated for 5 minutes to make it uniformly dispersed to make a hydrophobic silica dispersion;

[0034] (3) Mix 60mL of the polymer dispersion and 60mL of the hydrophobic silica dispersion evenly, and then ultrasonically treat them for 5 minutes to disperse them evenly to make a hydrophobic coating;

[0035] (4) Use a spray gun to spray the hydrophobic coating with a pressure of 0.2 MPa onto the steel sheet that has been cleaned and dried in advance, then dry the steel sheet at 60°C for half an hour and then keep it at 200°C for 1....

Embodiment 3

[0037] (1) Weigh 6g of polyphenylene sulfide micropowder, and ultrasonically disperse it in 60mL of absolute ethanol to make a polymer dispersion;

[0038] (2) Weigh 8g of polydimethylsiloxane-modified silicon dioxide hydrophobic micropowder, ultrasonically disperse it in 120mL of absolute ethanol, then add 0.5g of surfactant cetyltrimethylammonium bromide, Ultrasonic treatment for 5 minutes to make it uniformly dispersed to make a hydrophobic silica dispersion;

[0039] (3) Mix 60mL of the polymer dispersion and 120mL of the hydrophobic silica dispersion evenly, and then ultrasonically treat it for 5 minutes to disperse it evenly to make a hydrophobic coating;

[0040] (4) Use a spray gun to spray the hydrophobic coating with a pressure of 0.2 MPa onto the previously cleaned and dried plastic plate, then dry the plastic plate at 80°C for half an hour and then keep it at 160°C for 1.5 hours. A plastic plate with a superhydrophobic coating, and the thickness of the hydrophobic...

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Abstract

The invention provides a method for preparing a polymer hydrophobic surface and belongs to the technical field of polymer chemical material. The method comprises: preparing a polymer desperation and hydrophobic silica desperation; uniformly mixing the polymer desperation and the hydrophobic silica desperation for preparing a hydrophobic coating; spraying the hydrophobic coating onto a completely cleaned base surface uniformly with a spray gun; and finally, subjecting the sprayed base surface to heat treatment and cooling the base surface to obtain the polymer hydrophobic surface. The surface of a coating processed by the method is obvious in super-hydrophobic performance, uniform in luster and stable in performance, free from damage caused by scrubbing to the super-hydrophobic performance, simple in preparation process, low in preparation process implementation cost and applicable surfaces made from various materials without damaging the original materials by corrosive materials.

Description

technical field [0001] The invention relates to a preparation method in the technical field of polymers in chemical materials, in particular to a preparation method for a polymer hydrophobic surface. Background technique [0002] Wettability is one of the important properties of a solid surface, usually measured by the contact angle of a liquid on a solid surface. Generally, the solid surface with a water contact angle greater than 150° and water droplets are easy to roll off is called a superhydrophobic surface. It has broad application prospects in many fields such as self-cleaning materials, microfluidics, and non-destructive liquid transmission. People have found typical examples of superhydrophobic lotus leaf surfaces in nature, and realized that the contact angle mainly depends on two factors: surface free energy and microscopic geometric structure. Therefore, two methods for preparing superhydrophobic surfaces have been developed, that is, preparing special surface s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D3/00B05D3/02C09D181/02C09D125/06C09D133/12C09D167/02C09D7/12C09D5/00
Inventor 王苏浩李梅路庆华何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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