Super-hydrophobic ice-covering-proof coating having slowly-releasing function and preparation method thereof

A super-hydrophobic and anti-icing technology, applied in the coating and other directions, can solve the problem that the anti-icing coating cannot achieve the anti-icing effect, and achieve the effect of anti-icing, simple preparation process and good effect

Active Publication Date: 2012-03-21
天津渤化讯创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, a single-function anti-icing coating cannot achieve long-term and efficient anti-icing effects, and two or more anti-icing functions must be combined

Method used

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  • Super-hydrophobic ice-covering-proof coating having slowly-releasing function and preparation method thereof
  • Super-hydrophobic ice-covering-proof coating having slowly-releasing function and preparation method thereof
  • Super-hydrophobic ice-covering-proof coating having slowly-releasing function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The inorganic hollow or porous nanoparticles used are hollow porous nano silicon dioxide with a diameter of 500nm and a porosity of 80%. Under a negative pressure of -0.9MPa, soak 5g of hollow porous nano-silica in isopropanol, stop the adsorption after continuous adsorption for 1 hour, and use filter paper to blot excess small molecules on the particle surface. The adsorption capacity of hollow porous nano-silica to isopropanol is 2.5g / g.

[0040] Using the method of semi-continuous seed emulsion polymerization, raise the temperature of the water bath to 70-75 ° C, blow nitrogen, and add 6 g of methyl methacrylate, 8 g of butyl acrylate, 1 g of hydroxyethyl methacrylate, and persulfuric acid at a time at 300 rpm. A mixed solution of 0.1g of potassium and 40g of water is reacted for half an hour to synthesize a seed emulsion; continue to heat up to 80-85°C, and continuously add 2g of methyl methacrylate, 2g of butyl acrylate, and dodecafluoromethacrylate dropwise over 3...

Embodiment 2

[0043] The inorganic hollow or porous nano-particles used are porous nano-alumina with a diameter of 100-200nm and a porosity of 60%. Under a negative pressure of -0.5MPa, soak 4g of porous nano-alumina into simethicone oil, stop the adsorption after continuous adsorption for 3 hours, and use filter paper to absorb excess small molecules on the particle surface. The adsorption capacity of porous nano-alumina to simethicone is 1.6g / g. The fluoropolymer used is an aqueous dispersion of fluorine-containing acrylate ( 8740 porous surface protection agent), the solvent is water. The fluorine-containing acrylate aqueous dispersion belongs to cationic perfluoroalkyl methacrylic acid copolymer, has waterproof, oil-proof, and anti-fouling properties, and its solid content is 30wt%, and the surface energy of the coating film is 15mN / m. The contact angle was 115°.

[0044] 3g of porous nano-alumina adsorbed with simethicone, 2g of fluorine-containing acrylate aqueous dispersion and 2...

Embodiment 3

[0046] The inorganic hollow or porous nanoparticles used are hollow porous nano titanium dioxide with a diameter of 80-100nm and a porosity of 66%. Under a negative pressure of -0.6MPa, soak 4g of hollow porous nano-titanium dioxide into hexadecane, stop the adsorption after continuous adsorption for 5 hours, and use filter paper to dry up excess small molecules on the particle surface. The adsorption capacity of hollow porous nano titanium dioxide to hexadecane is 2g / g.

[0047] The fluorine-containing polymer adopted is self-made fluorine-containing acrylic resin, and the solvent is butyl acetate. The fluorine-containing acrylic resin adopts the method of free radical solution polymerization. First, the temperature of the solvent is raised to 70-75 ° C, nitrogen gas is passed, and 5 g of methyl methacrylate, 7 g of butyl acrylate, 4 g and 8 g of acrylic acid are continuously added dropwise for 2.5 to 3 hours. A mixed solution of pentafluorononyl methacrylate and 0.4 g of az...

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Abstract

The invention discloses preparation of a super-hydrophobic ice-covering-proof coating having a slowly-releasing function. The ice-covering-proof coating consists of the following substances in parts by mass: 1.5-5 parts of inorganic hollow or porous nanoparticles for adsorbing small molecular anti-icing substances, 2-5 parts of fluorine-containing polymer and 1-15 parts of solvent. The super-hydrophobic ice-covering-proof coating having the slowly-releasing function can be obtained by uniformly mixing the three substances and coating the mixture onto the surface of a substrate. At the normal temperature, the water contact angle of the coating is greater than 150 degrees, and the rolling angle is smaller than 7 degrees. At 10 DEG C below zero, the low-temperature contact angle of water is greater than 140 degrees, and the rolling angle is smaller than 12 degrees. During testing of the ice cover at 10 DEG C below zero, the ice cover is lowered by over 70 percent, and is still higher than 50 percent after testing is performed circularly for ten times in comparison to a blank sample.

Description

technical field [0001] The invention belongs to the technical field of surface coatings in chemical engineering, and relates to an anti-icing coating, in particular to a superhydrophobic coating combined with inorganic porous particles and low surface energy fluorosilicone resin and a preparation method thereof. Background technique [0002] The coverage and accumulation of ice and snow have a huge impact on social life and the national economy, ranging from inconvenience to people's lives, to serious losses of life and property. Anti-icing technology is a worldwide problem. At this stage, anti-icing methods mainly include deicing technology (such as mechanical deicing, spraying deicing agent, heating deicing, etc.) and anti-icing technology (such as coating anti-icing coating). Deicing technology usually works after icing and cannot suppress the occurrence of icing. The effect is mediocre and consumes a lot of energy. In contrast, anti-icing coatings have broader prospect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D133/12C09D133/16C09D183/08C09D5/00C09D7/12C08F220/18C08F220/14C08F220/28C08F220/22C08F220/06C08F4/40
Inventor 赵蕴慧刘喆袁晓燕周建伟李辉余冬梅
Owner 天津渤化讯创科技有限公司
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