Super-hydrophobic self-cleaning paint

A self-cleaning, super-hydrophobic technology, applied in polyether coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as cumbersome preparation methods, and achieve the effects of convenient construction, less environmental pollution, and low price and cost

Inactive Publication Date: 2008-06-25
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 200510095423.7 describes the microfiber-reinforced fluorine-containing coating has the advantages of superhydrophobic and oleophobic, but the preparation method is cumbersome, and it is difficult to apply on large-area engineering surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] PTFE powder 1.00g

[0024] Polyurethane resin 0.40 g

[0025] Mixed solvent (2.00 grams of acetone, 2.00 grams of ethyl acetate) 4.00 grams

[0026] Silane coupling agent 0.05 g

[0027] Weigh each component according to the above formula, first disperse polytetrafluoroethylene powder into the mixed solvent, add silane coupling agent after magnetic stirring for 10 minutes, ultrasonic treatment for 5 minutes, finally add polyurethane resin, mix and stir evenly, use a spray gun to Spray on the surface of the steel block that has been dewatered, degreased, and derusted under the pressure of 0.1-0.2Mpa, put the sprayed steel block in an oven at 150°C for two hours, and use 4μL of deionized water droplets after the steel block is naturally cooled On the coating surface, the contact angle is 157-161 degrees, and the sliding angle is 4-6 degrees.

Embodiment 2

[0029] PTFE powder 1.00g

[0030] Polyurethane resin 0.40 g

[0031] Mixed solvent (2.00 grams of acetone, 2.00 grams of ethyl acetate) 4.00 grams

[0032] Silane coupling agent 0.05 g

[0033] Weigh each component according to the above formula, first disperse polytetrafluoroethylene powder into the mixed solvent, add silane coupling agent after a period of magnetic stirring, ultrasonic treatment, and finally add polyurethane resin and stir evenly, use a spray gun to Spray on the surface of the steel block that has been dewatered, degreased, and derusted under the pressure of Mpa. Put the sprayed steel block in an oven at 150°C to cure for two hours. After the steel block is naturally cooled, put the steel block into the plasma for only Treat for 15 minutes in an air atmosphere with a power of 10 watts, and then drop 4 μL of deionized water on the coating surface. The contact angle is 152-155 degrees, and the sliding angle is 6-8 degrees.

Embodiment 3

[0035] PTFE powder 1.00g

[0036] Polyurethane resin 0.40 g

[0037] Mixed solvent (2.00 grams of acetone, 2.00 grams of ethyl acetate) 4.00 grams

[0038] Silane coupling agent 0.05 g

[0039] Weigh each component according to the ratio described in the present invention, first disperse the polytetrafluoroethylene powder into the mixed solvent, add the silane coupling agent after a period of magnetic stirring, ultrasonic treatment, and finally add the polyurethane resin and stir evenly, then use a spray gun Spray on the surface of the steel block that has been dewatered, degreased, and derusted under the pressure of 0.1-0.2Mpa, put the sprayed steel block in an oven at 150°C for two hours, and wait for the steel block to cool naturally, then use 4μL PH When deionized water with a value of 14 is dropped on the coating surface, the contact angle is 152-155 degrees and the sliding angle is 9-11 degrees after 4 hours.

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PUM

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Abstract

The invention relates to super-hydrophobic self-cleaning paint suitable to be used in various surfaces. The paint comprises the following components: 100 portions of filler, 30 to 50 portions of polyurethane, 300 to 500 portions of mixed solvent and 1 to 5 portions of Gamma-aminopropyltrimethoxysilane. The invented paint has the advantages of super-hydrophoby, self cleaning, antifouling, antisticking, denoise and drag reduction, etc.; meanwhile, the paint has low price cost, convenient construction and less environmental pollution.

Description

technical field [0001] The invention describes a superhydrophobic self-cleaning coating suitable for various surfaces. Background technique [0002] Super-hydrophobic self-cleaning coatings can avoid water sticking, reduce chemical reaction oxidation between the surface and water, reduce drag, adhere and have self-cleaning effects. It can be applied to buildings, ships, torpedoes, glass, satellite antennas and other industries. At present, the main technology of self-cleaning coatings is monopolized by foreign countries, and only easy-cleaning coatings are developed in China, and there is little development of super-hydrophobic self-cleaning coatings. The microfiber-reinforced fluorine-containing coating described in Chinese patent 200510095423.7 has the advantages of superhydrophobic and oleophobic, but the preparation method is cumbersome, and it is difficult to apply on large-area engineering surfaces. Contents of the invention [0003] The purpose of the invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12C09D127/18C09D171/00
Inventor 张招柱宋浩杰门学虎
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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