Preparation method of a durable anti-icing 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: 2019-12-13
哈尔滨毓干科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 a durable anti-icing superhydrophobic coating
  • Preparation method of a durable anti-icing superhydrophobic coating
  • Preparation method of a durable anti-icing 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 freezing for a long time The preparation method is carried out as follows:

[0052] (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;

[0053] (2) 5g of epoxy resin (Nantong Xingchen Synthetic Materials Co., Ltd., Phoenix brand, epoxy resin (E-44)), 5g of alicyclic amine curing agent ultrasonic and stirred in 50mL of acetone, 30mL of xylene, 20mL of acetic acid In the mi...

Embodiment 2

[0083] In this embodiment, the base material is a poplar board with a thickness of about 200*200*15mm, and the preparation method of a superhydrophobic poplar board that can resist freezing for a long time is carried out as follows:

[0084] (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;

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

[0086] (3) Weigh 2.4g of hydrophilic fumed sili...

Embodiment 3

[0104] In this embodiment, the substrate material is corrugated cardboard with a thickness of about 200*200*5mm, and the preparation method of superhydrophobic corrugated cardboard that can resist freezing for a long time is carried out according to the following steps:

[0105] (1) Corrugated cardboard is used as the base material, wipe it clean with a clean cotton cloth, and set aside;

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

[0107] (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 hexadecyltrimethoxysilane, after continuing to stir and sonicate for 1.5 hou...

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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 superhydrophobic coating preparation, in particular to a preparation method of a durable anti-icing superhydrophobic coating. 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 advantages of water saving, energy saving, environmental ...

Claims

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Application Information

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Patent Type & Authority Patents(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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