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A kind of preparation method of antiwear polysulfide superhydrophobic coating

A super-hydrophobic coating and anti-wear technology, applied in the field of coatings, can solve the problems of rough surface structure damage, super-hydrophobic surface failure, super-hydrophobic function failure, etc., to achieve increased stress area, good low temperature resistance, and good wear resistance performance effect

Active Publication Date: 2017-09-15
山东天汇防水股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Super-hydrophobic coatings refer to coatings with a contact angle greater than 150° with water droplets. Super-hydrophobic coatings have the functions of self-cleaning, waterproof, and anti-ice and snow adhesion. They have application prospects in daily life and industrial fields. Super-hydrophobic coatings have a highly rough structure , when the superhydrophobic surface is subjected to friction, in fact, the micron or nanometer protrusions on the surface bear the pressure and shear action, and the pressure and shear stress carried by the surface micro-protrusions are far greater than the apparent pressure and shear stress, thus causing the surface The rough structure is damaged due to stress concentration, which eventually leads to the failure of the superhydrophobic function
Therefore, the superhydrophobic surface is prone to wear and failure during use

Method used

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  • A kind of preparation method of antiwear polysulfide superhydrophobic coating
  • A kind of preparation method of antiwear polysulfide superhydrophobic coating
  • A kind of preparation method of antiwear polysulfide superhydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1): Weigh 1.45 grams of liquid polysulfide rubber, 1 gram of toluene diisocyanate and 20 grams of ethyl acetate in a round bottom flask, and react at 60°C for 1 hour to obtain a polysulfide polyurethane prepolymer solution. Polyurethane prepolymer solution is slowly added dropwise to 28.06 grams of mass concentration in the ethanol solution of 1.0% diethylenetriamine, and the stirring speed of 300 revolutions per minute is maintained during the dropping process to obtain polysulfide powder rubber dispersion;

[0034] Step 2): uniformly mix the above polysulfide powder rubber dispersion with 12.63 grams of ethyl acetate solution of epoxy resin F-51 with a mass concentration of 10%, add 0.189 grams of triethylenetetramine and 0.253 grams of amino silicone oil dropwise, and mix Obtain the spray coating uniformly, spray it on the glass sheet with a spray gun, and cure it at 20 degrees Celsius for 12 hours, and the obtained coating is a super-hydrophobic coating.

[003...

Embodiment 2

[0037] Step 1): Weigh 1.9 grams of liquid polysulfide rubber, 1 gram of toluene diisocyanate and 20 grams of ethyl acetate in a round bottom flask, and react at 60°C for 1 hour to obtain a polysulfide polyurethane prepolymer solution. The polyurethane prepolymer solution is slowly added dropwise to 25.42 grams of mass concentration in the ethanol solution of 1.0% diethylenetriamine, and the stirring speed of 500 revolutions per minute is maintained during the dropping process to obtain the polysulfide powder rubber dispersion;

[0038] Step 2): uniformly mix the above-mentioned polysulfide powder rubber dispersion with 15.09 grams of ethyl acetate solution of epoxy resin F-51 with a mass concentration of 10%, add 0.19 grams of triethylenetetramine and 0.267 grams of amino silicone oil dropwise, and mix Obtain the spray coating uniformly, spray it on the glass sheet with a spray gun, and cure it at 20 degrees Celsius for 12 hours, and the obtained coating is a super-hydrophobic ...

Embodiment 3

[0041] Step 1): Weigh 1.9 grams of liquid polysulfide rubber, 1 gram of toluene diisocyanate and 20 grams of ethyl acetate in a round bottom flask, and react at 60°C for 1 hour to obtain a polysulfide polyurethane prepolymer solution. The polyurethane prepolymer solution is slowly added dropwise to 28.625 grams of ethanol solution with a mass concentration of 1.0% diethylenetriamine, and a stirring speed of 400 revolutions per minute is maintained during the dropping process to obtain a polysulfide powder rubber dispersion;

[0042] Step 2): uniformly mix the above polysulfide powder rubber dispersion with 16.1 grams of ethyl acetate solution of epoxy resin F-51 with a mass concentration of 10%, add dropwise 0.20 grams of triethylenetetramine and 0.284 grams of amino silicone oil, and mix Obtain the spray coating uniformly, spray it on the glass sheet with a spray gun, and cure it at 20 degrees Celsius for 12 hours, and the obtained coating is a super-hydrophobic coating.

[0...

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Abstract

The invention relates to a preparation method of an anti-wear polysulfide superhydrophobic coating. The preparation method adopts the following two steps: 1) prepolymerization, and synthesis to obtain a polysulfide polyurethane prepolymer solution; the above polysulfide polyurethane prepolymer solution Stir and drop into the ethanol solution of diethylenetriamine, and extend the chain to obtain a polysulfide powder rubber dispersion; 2) Stir the polysulfide powder rubber dispersion in 1) and other components evenly to obtain a spray liquid, which is sprayed on the substrate, Cured to form a superhydrophobic coating with an ordered micro-convex structure. The advantages of this technical solution are: 1) Wide application, the coating can be applied to glass, metal, wood, and ceramic substrates; 2) The coating has anti-wear properties; 3) The production process does not require a high temperature environment, and the temperature environment below 20°C It can be realized, and the process has low requirements on the environment; 4) The process is simple, the production cost is low, it can be cured at room temperature, it can process large-area and special-shaped test piece surfaces, and it can be applied to outdoor construction.

Description

technical field [0001] The invention relates to a preparation method of a polysulfide superhydrophobic coating, which belongs to the technical field of coatings. Background technique [0002] Super-hydrophobic coatings refer to coatings with a contact angle greater than 150° with water droplets. Super-hydrophobic coatings have the functions of self-cleaning, waterproof, and anti-ice and snow adhesion. They have application prospects in daily life and industrial fields. Super-hydrophobic coatings have a highly rough structure , when the superhydrophobic surface is subjected to friction, in fact, the micron or nanometer protrusions on the surface bear the pressure and shear action, and the pressure and shear stress carried by the surface micro-protrusions are far greater than the apparent pressure and shear stress, thus causing the surface The rough structure is damaged due to stress concentration, which eventually leads to the failure of the superhydrophobic function. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D163/00C09D7/12C08G18/65C08G18/64C08G18/32C08G18/10
Inventor 王峰赵国庆王华王超粟常红田新博王治国刘宗明段广彬
Owner 山东天汇防水股份有限公司
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