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Preparation method of a sprayable and durable superamphiphobic coating

A super-amphiphobic, coating technology, used in coatings, anti-corrosion coatings, epoxy coatings, etc., can solve surface rough structure damage, super-hydrophobic or super-oleophobic functional failure, super-hydrophobic and super-oleophobic durability It can achieve the effect of prolonging the service life, excellent superhydrophobicity and superoleophobicity, and durable anti-icing performance.

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

AI Technical Summary

Problems solved by technology

[0004] However, the practical application of superhydrophobic and superoleophobic coatings has not yet been popularized. One of the main reasons is the poor durability of superhydrophobic and superoleophobic coatings.
When the super-hydrophobic surface is subjected to external forces such as friction or impact, the microscopic rough convex structure on the surface is subjected to bearing pressure and shear stress, which leads to the damage of the surface rough structure due to stress concentration, and finally leads to superhydrophobic or superoleophobic function. sexual failure

Method used

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  • Preparation method of a sprayable and durable superamphiphobic coating
  • Preparation method of a sprayable and durable superamphiphobic coating
  • Preparation method of a sprayable and durable superamphiphobic coating

Examples

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Comparison scheme
Effect test

Embodiment 1

[0053] 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 sprayable and durable super-amphiphobic aluminum alloy plate The preparation method is carried out as follows:

[0054] (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;

[0055] (2) 5g of epoxy resin adhesive (Nantong Xingchen Synthetic Materials Co., Ltd., Phoenix brand, epoxy resin (E-44)), 5g of alicyclic amine curing agent ultrasonically and stirred in 50mL acetone, 30mL xylene, 20mL In the mixed solvent of tert-butyl a...

Embodiment 2

[0085] In this embodiment, the base material is a poplar board with a thickness of about 200*200*15mm, and the preparation method of the super amphiphobic poplar board that can be sprayed and durable is carried out according to the following steps:

[0086] (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;

[0087] (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;

[0088] (3) Weigh 2.4g of carbon nanotubes with a...

Embodiment 3

[0106] 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:

[0107] (1) Corrugated cardboard is used as the base material, wipe it clean with a clean cotton cloth, and set aside;

[0108] (2) 5 g of acrylic resin (Degussa Acrylic Resin LP64 / 12N) was ultrasonically dissolved in a mixed solvent of 40 mL of acetone, 40 mL of xylene, and 20 mL of tert-butyl acetate to prepare an acrylic resin glue;

[0109] (3) Weigh 1.1g of hydrophilic fumed silica with a particle size of 7-40nm and 0.9g of aluminum oxide with an average particle size of 300nm, stir and ultrasonically disperse them in 100mL of n-hexane, and ultrasonically for 1.5 hours; then After adding 4g of perfluorooctyltrichlorosilane, continuing to stir and sonicating for 1.5 hours, a particle composite solution w...

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Abstract

The invention belongs to the field of super-hydrophobic or super-amphiphobic coating preparation, and particularly relates to a method for preparing durable super-amphiphobic coatings capable of being sprayed. The method particularly includes steps of 1, carrying out cleaning and sand blasting roughening treatment on the surfaces of base materials; 2, preparing resin solution; 3, preparing particle composite suspension; 4, spraying the resin solution obtained at the step 2 on the surfaces, treated at the step 1, of the base materials, drying the base materials and carrying out semi-solidification on resin adhesive; 5, spraying the particle composite suspension obtained at the step 3 on the surfaces of the base materials obtained at the step 4, and drying the base materials to completely solidify the base materials; 6, washing the surfaces of the base materials obtained at the step 5 to obtain the durable super-amphiphobic coatings capable of being sprayed. The method has the advantage that the durable super-amphiphobic coatings with excellent durability and firmness can be prepared on the surfaces of the various base materials by the aid of spraying technologies and have persistent anti-freezing performance.

Description

technical field [0001] The invention belongs to the field of super-hydrophobic or super-amphiphobic coating preparation, in particular to a method for preparing a sprayable and durable super-amphiphobic coating. Background technique [0002] In recent years, some materials with extreme wettability on the surface have gradually attracted people's attention. Among them, the superamphiphobic surface has a contact angle of more than 150° for water and oil, a rolling angle of less than 10°, and self-cleaning properties. properties 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. From previous studies, we can know that the superhydrophobic and superoleophobic properties of the material surface are mainly attributed to the rough micro / nano-rough structure of the surface and the low surface energy of the surface. On the basis of this the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/04C09D133/00C09D7/61C09D7/63C09D5/08
CPCC08K3/22C08K3/36C08K5/54C08K5/5419C08K7/24C08K2003/2227C08K2201/011C09D5/08C09D7/61C09D7/63C09D7/70C09D133/00C09D163/00C09D175/04
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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