Preparation method of super-amphiphobic coating capable of being sprayed and lastingly resisting icing

A super-amphiphobic, anti-icing technology, used in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of reducing the adhesion strength of ice on the surface, unable to resist icing for a long time, and difficult to remove the surface, etc. Achieve durable icing resistance, good durability and firmness, and improved bond strength

Active Publication Date: 2017-08-08
哈尔滨毓干科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a large number of studies, it has been proved that the superhydrophobicity of the surface reduces the adhesion strength of ice on the surface
However, recent studies have shown that most of the prepared superhydrophobic or superamphiphobic surfaces cannot resist freezin

Method used

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  • Preparation method of super-amphiphobic coating capable of being sprayed and lastingly resisting icing
  • Preparation method of super-amphiphobic coating capable of being sprayed and lastingly resisting icing
  • Preparation method of super-amphiphobic coating capable of being sprayed and lastingly resisting icing

Examples

Experimental program
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Effect test

Embodiment 1

[0055] In this embodiment, the base material is an aluminum alloy plate with a thickness of about 200*200*3mm. The aluminum alloy plate can be Shanghai Zhixin Industry and Trade Co., Ltd.-2014 type, a super amphiphobic aluminum alloy that can resist freezing for a long time The plate preparation method is carried out as follows:

[0056] (1) The aluminum alloy plate is used as the substrate, cleaned with water and a clean cotton cloth, and then the surface of the substrate is roughened by sandblasting with 80 mesh brown corundum sand, the air pressure is 0.5MPa, and the sandblasting time is 1 minute; then use Acetone, ethanol and deionized water are used to clean the surface of the substrate in sequence, and dry at room temperature for use;

[0057] (2) 10 g of one-component polyurethane adhesive (Great Wall brand 717 one-component polyurethane adhesive, Shanghai Fine Stationery Co., Ltd.) was ultrasonically dissolved in 50 mL of acetone, 30 mL of xylene, and 20 mL of tert-but...

Embodiment 2

[0087] In this embodiment, the base material is a poplar board with a thickness of about 200*200*15mm, and the preparation method of a super amphiphobic poplar board that can resist freezing for a long time is carried out as follows:

[0088] (1) The poplar board is used as the substrate, cleaned with water and clean cotton cloth, and then the surface of the substrate is roughened by sandblasting with 200 mesh brown corundum sand, the air pressure is 2.0MPa, and the sandblasting time is 30s; after that, use acetone, Wash the substrate surface with ethanol and deionized water in sequence, and dry it at room temperature for use;

[0089] (2) 8g of one-component polyurethane adhesive (Heshibao one-component polyurethane adhesive, Dongguan New Vision Technology Co., Ltd.) was ultrasonically dissolved with stirring in a mixed solvent of 50mL acetone, 35mL toluene, and 15mL ethyl acetate to prepare Polyurethane glue;

[0090] (3) Weigh 2.4g of hydrophilic fumed silica with a partic...

Embodiment 3

[0108] In this embodiment, the substrate material is corrugated cardboard with a thickness of about 200*200*5 mm, and the preparation method of super amphiphobic corrugated cardboard that can resist freezing for a long time is carried out according to the following steps:

[0109] (1) Corrugated cardboard is used as the base material, wipe it clean with a clean cotton cloth, and set aside;

[0110] (2) 5g of one-component polyurethane adhesive (Great Wall brand 718 one-component polyurethane adhesive, Shanghai Fine Stationery Co., Ltd.) was ultrasonically dissolved in 40mL of acetone, 40mL of xylene, and 20mL of tert-butyl acetate in a mixed solvent, Prepare polyurethane glue;

[0111] (3) Weigh 1.1g of hydrophilic fumed silica with a particle size of 7-40nm and 0.9g of silica with an average particle size of 300nm, stir and ultrasonically disperse them in 100mL of n-hexane, ultrasonically for 1.5 hours; then add 4g of perfluorooctyltrichlorosilane, after continuing to stir a...

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Abstract

The invention belongs to the field of preparation of super-hydrophobic or super-amphiphobic coatings and in particular relates to a preparation method of a super-amphiphobic coating capable of being sprayed and lastingly resisting icing. The preparation method specifically comprises the following steps: step 1, carrying out washing and sand-blasting roughening treatment on the surface of a base material; step 2, blending polyurethane and a first solvent to obtain a polyurethane solution; step 3, dispersing sub-micron-grade particles and nanoparticles into a second solvent and adding fluorosilane to obtain a particle compound suspension solution; step 4, spraying the polyurethane solution obtained step 2 on the surface of the base material treated by step 1 and carrying out semi-curing on a polyurethane adhesive; step 5, spraying the particle compound suspension solution on the surface of the base material obtained by step 4 and carrying out complete curing; step 6, obtaining the super-amphiphobic coating capable of being sprayed and lastingly resisting icing. The preparation method of the super-amphiphobic coating capable of being sprayed and lastingly resisting icing has the beneficial effects that the super-amphiphobic coating is prepared on the surface of each base material through a spraying technology, has good durability and firmness and also has a lasting icing-resisting performance.

Description

technical field [0001] The invention belongs to the field of preparation of super-hydrophobic or super-amphiphobic coatings, in particular to a method for preparing super-amphiphobic coatings that can be sprayed and are durable and anti-icing. Background technique [0002] Surface wettability is one of the important characteristics of solid surface, wettability can be measured by the contact angle of water on the surface; superhydrophobic surface because of its contact angle to water is greater than 150°, rolling angle is less than 10°, and has self- The cleaning properties have aroused great interest in both academia and industry. In nature, the leaves and petals of many plants, the wings of insects, and the feathers of birds are all natural superhydrophobic materials. The self-cleaning function of the superhydrophobic surface means that surface pollutants such as dust can be carried away by rolling water droplets without leaving any traces. Self-cleaning coating has the ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C09D5/08
CPCC08K3/36C08K5/5419C08K2201/014C09D5/08C09D7/63C09D175/04
Inventor 王成毓刘峰胡海涛
Owner 哈尔滨毓干科技有限公司
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