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Nanocomposite ice-coating-proof paint having properties of superhydrophobicity and low adhesive strength

A nano-composite, low-adhesion technology, applied in coatings and other directions, can solve the problems of anti-icing effect, water absorption and water absorption rate, limited hydrophobic performance and deicing performance, and limited anti-icing life. Anti-icing effect is remarkable, anti-icing effect, remarkable effect

Inactive Publication Date: 2012-09-12
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Disclosed anti-icing coating mainly divides two classes, and a class is hydrophilic anti-icing coating (CN1632014 of people such as Liu Zhongliang, CN1916094A), and its anti-icing effect is affected greatly by the water absorption capacity and water absorption rate of material, not Suitable for environments with high humidity and low temperature for a long time, and the repeatability is not good, and the anti-icing life is limited
The other is hydrophobic anti-icing material (CN1880396A of United Technology Corporation, CN101579670A of Li Chengxiang et al.), which can delay the formation of ice nuclei, but its hydrophobicity and deicing performance are limited

Method used

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  • Nanocomposite ice-coating-proof paint having properties of superhydrophobicity and low adhesive strength
  • Nanocomposite ice-coating-proof paint having properties of superhydrophobicity and low adhesive strength
  • Nanocomposite ice-coating-proof paint having properties of superhydrophobicity and low adhesive strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Mix 15 grams of perfluorooctyl ethyl acrylate, 10 grams of 2-hydroxyethyl methacrylate, 35 grams of methyl methacrylate, 25 grams of isooctyl acrylate, and 15 grams of lauryl acrylate and add them to the reactor In the process, the temperature was slowly raised to 65° C. under nitrogen gas, and 0.5 g of initiator 2,2′-azobisisobutyronitrile was added to react for 8 hours to obtain a fluorine-containing polyacrylate copolymer.

[0033] 10 grams of the above fluorine-containing polyacrylate copolymer, 0.05 grams of BYK-070 defoamer, 0.3 grams of organic bentonite, 35 grams of ethyl acetate, 35 grams of butyl acetate, 10 grams of xylene, 4 grams of nano-silica, Stir at room temperature to prepare a mixed solution, add 6 grams of amino resin into the mixed solution and stir for 1 to 2 hours, and discharge to prepare the super-hydrophobic, low-adhesion nanocomposite anti-icing coating. The paint is directly coated on the aluminum sheet, and after drying, it is put into an ov...

Embodiment 2

[0035] 20 grams of perfluorohexyl ethyl acrylate, 10 grams of glycidyl methacrylate, 30 grams of methyl methacrylate, 25 grams of butyl methacrylate, and 15 grams of octadecyl acrylate are mixed and added to the reaction kettle. Slowly heat up to 80° C. under nitrogen gas, add 0.5 g of initiator benzoyl peroxide, and react for 10 hours to obtain a fluorine-containing polyacrylate copolymer.

[0036] Prepare 20 grams of the above-mentioned fluorine-containing polyacrylate copolymer, 0.1 grams of BYK-054 defoamer, 0.5 grams of modified polyamide wax powder, 40 grams of butyl acetate, 30 grams of xylene, and 6 grams of nano-zinc oxide at room temperature. into a mixed solution. Add 4 grams of epoxy resin into the mixed solution and stir for 1 to 2 hours, and discharge to prepare the super-hydrophobic, low-adhesion nanocomposite anti-icing coating. The paint is directly coated on an aluminum sheet, and after drying, it is placed in an oven for 30 minutes with hot air at 150°C to ...

Embodiment 3

[0038] Mix 20 grams of perfluorooctyl sulfonyl acrylate, 20 grams of 2-hydroxyethyl acrylate, 25 grams of methyl methacrylate, 25 grams of butyl methacrylate, and 10 grams of isooctyl methacrylate before adding to the reaction In the kettle, the temperature was slowly raised to 80° C. under the condition of feeding nitrogen, and 1 g of initiator benzoyl peroxide was added, and reacted for 12 hours to obtain a fluorine-containing polyacrylate copolymer.

[0039] 15 grams of the above-mentioned fluorine-containing polyacrylate copolymer, 0.05 grams of BYK-057 defoamer, 0.5 grams of organic bentonite, 30 grams of butyl acetate, 20 grams of n-butanol, and 20 grams of xylene were stirred at room temperature to prepare a mixed solution. Add 5 grams of nano-alumina into the mixed solution and stir for 1-2 hours, then add 10 grams of polyurethane and discharge to prepare the super-hydrophobic, low-adhesion nano-composite anti-icing coating. The paint is directly coated on the aluminum...

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Abstract

The invention relates to a nanocomposite ice-coating-proof paint having properties of superhydrophobicity and low adhesive strength and a preparation method thereof. The nanocomposite ice-coating-proof paint is characterized by comprising such raw materials, by mass, as 3%-30% of a fluorine-containing polyacrylate copolymer, 40%-80% of a solvent, 0.05%-1.5% of a defoamer, 0.05%-1% of an anti-setting agent, 1%-15% of nanoparticles, and 1%-20% of a crosslinking-curing agent. Film thickness of an ice-coating-proof coating prepared by adopting the nanocomposite ice-coating-proof paint provided by the invention is 5-10 mum, the water contact angle is over 150 degrees and the maximum angle is up to 169 degrees, and the adhesive strength of ice on the coating surface is 1.43*10<-2>MPa. The coating has a significant effect on ice-coating proofing, and can be used for preventing ice-coating on such components as telegraph pole towers, heat pump air-conditioners, low-temperature refrigeration devices, aircraft components, and the like.

Description

technical field [0001] The invention relates to a nano-composite anti-icing coating with superhydrophobicity and low adhesion, and more specifically relates to an anti-icing coating used in low-temperature refrigeration, heat pump air conditioners, power systems, aviation and other fields prone to frost. Background technique [0002] Icing is a very common natural phenomenon. Icing phenomenon widely exists in various refrigeration equipment and evaporator surfaces of refrigeration systems (such as low-temperature refrigerator freezers, heat pump air conditioners, etc.), utility poles, aviation and other fields. For refrigeration equipment, the effective thermal conductivity of the frost layer is small, and the ice coating on the surface of the evaporator will reduce the heat transfer efficiency of the equipment, resulting in unstable operation of the system, and even system failure in severe cases; Disasters such as the collapse of towers, the paralysis of high-voltage power...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D7/12C08F220/14C08F220/22C08F220/28C08F220/18
Inventor 金小玲宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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