Preparation method of persistent icing-resistant superhydrophobic coating

A super-hydrophobic coating, ultrasonic technology, applied in coatings, anti-fouling/underwater coatings, paper coatings, etc., can solve the problem that super-hydrophobic surfaces cannot resist icing for a long time, reduce the adhesion strength of ice on the surface, and resist icing. It is not very ideal, etc., to achieve the effects of excellent self-cleaning performance, good durability and firmness, and excellent superhydrophobicity.

Active Publication Date: 2017-06-23
哈尔滨毓干科技有限公司
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  • 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 super-hydrophobic surfaces cannot resist freezing for a long time: especially when the super-hydrophobic surface encounters extremely low ambient temperature and high humidity, the super-hydrophobic surface is not resistant to freezing. Ideal, sometimes even more difficult to remove once the surface is frozen

Method used

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  • Preparation method of persistent icing-resistant superhydrophobic coating
  • Preparation method of persistent icing-resistant superhydrophobic coating
  • Preparation method of persistent icing-resistant superhydrophobic coating

Examples

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Embodiment 1

[0051] 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-hydrophobic aluminum alloy plate that can resist icing for a long time. The preparation method is carried out as follows:

[0052] (1) The aluminum alloy plate is used as the base material, washed with water and clean cotton cloth, and then the surface of the substrate is roughened with 80 mesh brown corundum sand, the air pressure is 0.5MPa, and the sandblasting time is 1 minute; then use it again Wash the substrate surface with acetone, ethanol and deionized water in sequence, and dry it at room temperature for later use;

[0053] (2) Dissolve 5g epoxy resin (Nantong Xingchen Synthetic Material Co., Ltd., Phoenix brand, epoxy resin (E-44)), 5g alicyclic amine curing agent ultrasonic and stirring in 50mL acetone, 30mL xylene, 20mL acetic acid In a mixed solvent of tert-butyl e...

Embodiment 2

[0083] In this embodiment, the base material is a poplar board with a thickness of about 200*200*15mm, and the method for preparing a super-hydrophobic poplar board with long-lasting anti-icing is carried out as follows:

[0084] (1) Poplar wood board is used as the substrate, washed with water and clean cotton cloth, and then 200 mesh brown corundum sand is used to blast the surface of the substrate. The air pressure is 2.0 MPa, and the sand blasting time is 30 seconds; then use acetone, Wash the surface of the substrate with ethanol and deionized water in turn, and dry it at room temperature for later use;

[0085] (2) 8g of epoxy resin (Nantong Xingchen Synthetic Material Co., Ltd., Phoenix brand, epoxy resin (E-51)), 5g of alicyclic amine curing agent were ultrasonically stirred and dissolved in 50mL acetone, 35mL toluene, 15mL ethyl acetate In the mixed solvent of ester, an epoxy resin glue is prepared;

[0086] (3) Weigh 2.4 g of hydrophilic fumed silica with a particle size o...

Embodiment 3

[0104] In this embodiment, corrugated cardboard with a thickness of about 200*200*5mm is selected as the base material, and the preparation method of the super-hydrophobic corrugated cardboard with long-lasting anti-icing is carried out as follows:

[0105] (1) Use corrugated cardboard as the substrate, wipe it clean with a clean cotton cloth, and set aside;

[0106] (2) Dissolve 5g of epoxy resin (Nanya Plastics Industry Co., Ltd., epoxy resin (NPEL-128)), 2g of cycloaliphatic amine curing agent with ultrasonic and stirring in 40mL acetone, 40mL xylene, 20mL tert-butyl acetate In the mixed solvent of, the epoxy resin glue is prepared;

[0107] (3) Weigh 1.1g of hydrophilic fumed silica with particle size of 7-40nm and 0.9g of silica with average particle size of 300nm, stir and ultrasonically disperse in 100mL n-hexane, ultrasonic for 1.5 hours; then add 4g of hexadecyltrimethoxysilane was stirred and ultrasonicated for 1.5 hours to prepare a particle composite solution;

[0108] (4...

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Abstract

The invention relates to the field of preparation of superhydrophobic coatings, in particular to a preparation method of a persistent icing-resistant superhydrophobic coating. The preparation method comprises the following steps: firstly, carrying out cleaning and sand-blasting roughen treatment on the surface of a substrate; secondly, blending epoxy resin, a curing agent and a first solvent to obtain an epoxy resin solution; thirdly, dispersing submicron particles and nanoparticles into a second solvent, and then adding a silane coupling agent to obtain particle composite suspension; fourthly, spraying the epoxy resin solution obtained in the second step on the surface of the substrate treated in the first step, and partially curing epoxy resin adhesive; fifthly, spraying the particle composite suspension obtained in the third step on the surface of the substrate obtained in the fourth step and completely curing; sixthly, obtaining the persistent icing-resistant superhydrophobic coating. The persistent icing-resistant superhydrophobic coating disclosed by the invention has the beneficial effects that the superhydrophobic coatings prepared on the surfaces of all the substrates have good durability and firmness and persistent icing-resistant property.

Description

Technical field [0001] The invention relates to the field of preparation of super-hydrophobic coatings, in particular to a preparation method of a super-hydrophobic coating with long-lasting anti-icing properties. Background technique [0002] Surface wettability is one of the important characteristics of a solid surface. The wettability can be measured by the contact angle of water on the surface; the superhydrophobic surface has a water contact angle greater than 150°, rolling angle less than 10°, and has a The clean characteristics have aroused great interest in 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 super-hydrophobic surface means that surface contaminants such as dust can be taken away by the falling water droplets without leaving any traces. Self-cleaning coating has the advantages of water saving, energy saving, env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D163/00C09D5/00C09D5/16C09D5/08D21H19/24D21H19/40D21H19/46B05D7/24B05D3/00
CPCB05D3/002B05D7/24B05D7/546B05D2350/33B05D2451/00B05D2504/00C09D1/00C09D5/00C09D5/08C09D5/1681C09D5/1687C09D163/00D21H19/24D21H19/40D21H19/46B05D2401/10B05D2420/01
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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