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Preparation method of wear-resistant and easy-to-repair superhydrophobic coating

A super-hydrophobic coating and wear-resistant technology, applied in the coating field, can solve the problems of high cost, complex process and high temperature, and achieve the effect of increasing the force-bearing area, simple process and good anti-wear performance.

Active Publication Date: 2016-09-21
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

[0014] The purpose of the present invention is to provide a method for preparing a wear-resistant and easy-to-repair superhydrophobic coating. For large-area workpieces or large-volume substrate defects, the coating preparation process is simple, the investment cost is low, easy to construct, and a super-hydrophobic coating with excellent wear resistance and easy repair can be obtained.

Method used

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  • Preparation method of wear-resistant and easy-to-repair superhydrophobic coating
  • Preparation method of wear-resistant and easy-to-repair superhydrophobic coating
  • Preparation method of wear-resistant and easy-to-repair superhydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1): Weigh 4.0 grams of 300-mesh styrene-butadiene rubber powder, mix them evenly with 4.0 grams of epoxy resin E-44 and 32 grams of ethyl acetate, add 0.4 grams of diethylenetriamine dropwise, spray on a glass sheet, and store at 20 °C Curing for 12 hours;

[0039] Process 2) Weigh 2.5 grams of epoxy resin E-44, 0.25 grams of diethylenetriamine, 0.25 grams of amino silicone oil dissolved in 31.02 grams of ethyl acetate and 15.98 grams of ethanol to form a uniform solution, and spray the solution on the product obtained in process 1) The surface of the coating was cured at 20°C for 12 hours to obtain a superhydrophobic coating.

[0040]The contact angle of the above coating is 165°, and the coating is tested for wear resistance according to the American Society for Testing and Materials standard ASTM D 968-05 (the test for the determination of the wear resistance of organic coatings by falling sand abrasion method). The results show that the coating After 2 kg of q...

Embodiment 2

[0042] Step 1): Weigh 4.0 grams of 400-mesh styrene-butadiene rubber powder, mix them evenly with 5.34 grams of epoxy resin E-44 and 17.33 grams of ethyl acetate, add 0.53 grams of diethylenetriamine dropwise, spray on a glass sheet, and store at 20°C Curing for 12 hours;

[0043] Process 2) Weigh 2.5 grams of epoxy resin E-44, 0.25 grams of diethylenetriamine, 0.25 grams of amino silicone oil dissolved in 15.51 grams of ethyl acetate and 6.49 grams of ethanol to form a uniform solution, spray the solution on the obtained The surface of the coating was cured at 20°C for 12 hours to obtain a superhydrophobic coating.

[0044] The contact angle of the above coating is 163°, and the coating is tested for wear resistance according to the American Society for Testing and Materials standard ASTM D 968-05 (the test for the determination of the wear resistance of organic coatings by falling sand abrasion method). The results show that the coating After 2 kg of quartz sand was dropped...

Embodiment 3

[0046] Step 1): Weigh 4.0 grams of 500-mesh styrene-butadiene rubber powder, mix them evenly with 8.0 grams of epoxy resin E-44 and 28 grams of ethyl acetate, add 0.8 grams of diethylenetriamine dropwise, spray on a glass sheet, and store at 20°C Curing for 12 hours;

[0047] Process 2) Weigh 2.5 grams of epoxy resin E-44, 0.25 grams of diethylenetriamine, 0.25 grams of amino silicone oil dissolved in 15.51 grams of ethyl acetate and 6.49 grams of ethanol to form a uniform solution, spray the solution on the obtained The surface of the coating was cured at 20°C for 12 hours to obtain a superhydrophobic coating.

[0048] The contact angle of the above coating is 164°. The coating is tested for wear resistance according to ASTM D 968-05 (the test for the determination of the wear resistance of organic coatings by falling sand abrasion method) of the American Society for Testing and Materials. The results show that the coating After 2 kg of quartz sand was dropped from a tube wi...

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Abstract

The invention discloses a method for preparing a wear-resistant and easy-to-repair super-hydrophobic coating, which includes step 1: mixing styrene-butadiene rubber powder, epoxy resin E‑44, ethyl acetate and diethylenetriamine in a certain proportion, and then spraying On the substrate, cured at 20°C; Step 2: Mix epoxy resin E-44, ethyl acetate, diethylenetriamine, and amino silicone oil evenly, spray on the coating obtained in step 1, and cure at 20°C. That is, super-hydrophobic coating. 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) It is easy to repair and can pass through after wear. The simple spraying process restores the original super-hydrophobic performance; 4) The production process does not require a high temperature environment, and can be realized at a temperature environment below 20°C, and the process has low environmental requirements; 5) The process is simple, the production cost is low, it can be cured at room temperature, and can be processed Large area, special-shaped test piece surface, and can be applied to outdoor construction and other characteristics.

Description

technical field [0001] The invention relates to a preparation method of a wear-resistant and easy-to-repair 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, the micron or nanometer micro-protrusions on the surface actually bear the pressure and shear action, and the pressure and shear stress carried by the micro-convexities on the surface are far greater than the apparent pressure and shear stress, resulting in superhydrophobic Hydrophobic coatings are damaged due to stress concentration, which eventually leads to failure of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D109/06C09D163/00C09D7/12B05D1/38B05D3/02
CPCB05D1/38B05D3/02C09D7/40C09D109/06C09D163/00C08L63/00C08L9/06C08L83/08
Inventor 王峰粟常红
Owner 山东天汇防水股份有限公司
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