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Anti-icing coating for low-temperature high-humidity environment and preparation method of anti-icing coating

A low-temperature, high-humidity, anti-icing technology, applied in the field of coatings, can solve the problems of poor surface durability of the coating, loss of anti-icing performance of the coating, and inapplicability

Active Publication Date: 2020-07-07
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Domestic research on anti-icing coatings is mainly hydrophobic coatings. The Chinese patent with publication number CN104449317A discloses a kind of anti-icing and snow covering coatings. coating to reduce the coverage of ice and snow, but after the coating is worn, with the consumption of anti-icing agent, the coating loses its anti-icing performance
The Chinese patent with the publication number CN109722150A discloses an anti-icing wind turbine blade and its preparation method, which uses the addition of conductive fillers to reduce the freezing point or increase the surface temperature of the matrix to effectively delay the formation of ice crystals and achieve the anti-icing effect. The coating requires lightning protection and cannot be widely used
In the prior art, surface microstructures are formed by means of surface etching or combination of micro-nano structures, so that hydrophobic coatings with lotus leaf effect are also widely studied in the field of anti-icing, but the surface durability of the currently prepared coatings is Poor, and not suitable for strong wind, high humidity and other environments

Method used

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  • Anti-icing coating for low-temperature high-humidity environment and preparation method of anti-icing coating
  • Anti-icing coating for low-temperature high-humidity environment and preparation method of anti-icing coating
  • Anti-icing coating for low-temperature high-humidity environment and preparation method of anti-icing coating

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Effect test

preparation example Construction

[0046]The preparation method of the functional porous nanomaterial is as follows: adding 100 g of an ethanol solution into a container, feeding nitrogen as a protective gas, and dispersing 5-10 g of an organic metal alkoxide together with 40-45 g of a low surface energy modifier in the container. In the ethanol solution, ultrasonically disperse uniformly, add porous nanomaterials with a mass of 40% to 50% of the mass of the low surface energy modifier, continue to ultrasonically disperse uniformly, and then place it in a vacuum oven at a temperature of 60 °C to dry, that is, to obtain functional Porous nanomaterials; the organic metal alkoxide is any one of ethylene glycol aluminum salt, isopropoxide aluminum salt, n-hexyl aluminum salt; the low surface energy modifier is perfluorosilane, perfluorooctanoic acid, perfluorooctanoic acid, perfluorooctanoic acid, perfluorooctanoic acid, perfluorooctanoic acid Any one of fluoroethylene propylene copolymer; the porous nano material i...

Embodiment 1

[0055] An anti-icing coating for a low temperature and high humidity environment, the components and corresponding mass fractions are shown in Table 1.

[0056] Table 1 Components of the anti-icing coating of Example 1 in terms of mass fraction

[0057]

[0058] The preparation method of the anti-icing coating comprises the following steps:

[0059] Step 1. Add 100g of ethanol solution to the three-necked flask, pass nitrogen as a protective gas, put 5g of ethylene glycol aluminum salt and 45g of perfluoroethylene propylene copolymer into the ethanol solution, after ultrasonic dispersion is uniform, add 22.5g of porous Nano-silica, after continuing to ultrasonically disperse for 2 hours, dry in a vacuum oven at 60 °C to obtain functional porous nano-silica;

[0060] Step 2: The elastic polyurethane resin, additives, 70% of the total solvent, and the functional porous nano-silica prepared in step 1 are weighed into the bucket according to the formula, and stirred for 5 minu...

Embodiment 2

[0064] The components and corresponding mass fractions of the anti-icing coating in Example 2 are shown in Table 2.

[0065] Table 2 Components of the anti-icing coating of Example 2 by mass fraction

[0066]

[0067] The preparation method of the anti-icing coating comprises the following steps:

[0068] Step 1. Add 100g of ethanol solution to the three-necked flask, pass nitrogen as a protective gas, put 10g of aluminum isopropoxide and 40g of perfluorooctanoic acid in the ethanol solution, after ultrasonic dispersion is uniform, add 16g of porous nano-titanium dioxide, and continue to ultrasonically disperse After 2 h, drying in a vacuum oven at 60 °C to obtain functional porous nano-titanium dioxide;

[0069] Step 2, add the elastic polyurethane resin, auxiliary agent, solvent accounting for 70% of the total amount and the functional porous nano-titanium dioxide prepared in step 1 into the bucket according to the formula, and stir for 30min with a high-speed disperser ...

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Abstract

The invention discloses an anti-icing coating for a low-temperature and high-humidity environment. The anti-icing coating comprises a component A and a component B, wherein the component A comprises the following components in percentage by mass: 45-65wt% of polyurethane resin, 10-20wt% of a functional porous nano material, 17-25wt% of a wear-resistant filler, 10-15wt% of a solvent and 2-3wt% of an assistant; the component B is an isocyanate curing agent; and the mass ratio of the component A to the component B is (5-5.5): 1. The preparation method comprises the following steps of preparing the functional porous nano material, and uniformly stirring the elastic polyurethane resin, the auxiliary agent, the solvent accounting for 70% of the total amount and the functional porous nano material at a low speed, adding the wear-resistant filler, and uniformly stirring at high speed, after uniformly stirring, grinding for 0.5-4 hours, and finally adding the residual solvent to adjust the viscosity, so as to obtain the component A, and before use, mixing the component A and the component B, uniform stirring and acquiring the anti-icing coating. The coating is good in film-forming propertyand compact in structure, the surface of a coating layer has low icing temperature and good hydrophobic property, and the coating has good anti-icing property in a low-temperature and high-humidity environment.

Description

technical field [0001] The invention involves a coating technology field. Specifically, it is a low -temperature and high humidity environment for anti -ice coatings and its preparation methods. Background technique [0002] Polar ships are mainly used in high -temperature low -temperature environments. The polar environment is not only low in temperature but also large humidity, especially the water wave splattered during the operation of the ship will increase the humidity of the air. In the low temperature and high humidity environment, it is mainly due to the condensation of water vapor on the surface of the coating to form ice crystals. As the large amount of ice crystals gather, it finally forms a freezing layer on the surface of the coating. Increase the weight of the hull, cause increased energy consumption, and there will be hidden safety hazards. [0003] At present, the ice -resistant coating at home and abroad can be divided into sacrifice coating and hydrophobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62C09D7/63C09D7/65C09D7/61
CPCC08K2003/2227C08K2003/2244C08K2201/011C09D175/04C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C08L27/18C08K13/06C08K9/08C08K7/26C08K9/12C08K5/057C08K3/22C08K9/04C08K7/24C08K7/28C08K9/06C08K3/041
Inventor 亓海霞张心悦陈小平朱励
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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