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Preparation method of fluorine-containing acrylic acid super-hydrophobic coating

A technology of super-hydrophobic coating and fluorine-containing acrylic acid, applied in the direction of polyurea/polyurethane coating, coating, etc., can solve the problems that the waterproof and anti-corrosion performance needs to be improved, the effect is not particularly ideal, and the production cost is high, and achieve excellent super-hydrophobic performance, Application prospect and potential, low-cost effect

Inactive Publication Date: 2014-06-18
ZHONGSHAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic related technologies and applications are quite backward
Chinese invention patent CN100999640 uses water-soluble resin composition, curing agent, and additives as raw materials to prepare solvent-free coatings for air-conditioning aluminum foils. Its waterproof and anti-corrosion properties need to be improved, especially to improve the "water bridge" and "water bridge" through hydrophilicity. Poor effect on problems such as "white powder" and "odor"
The water-dispersible air-conditioning aluminum foil coating prepared by Chinese invention patent CN101016435 has better anticorrosion performance, but the effect of removing "water bridge", "white powder" and "odor" is also poor
Chinese invention patent CN102167940A provides a coating applied to the fins of air-conditioning heat exchangers. The effect of improving "water bridge", "white powder" and "odor" is not particularly ideal, and the production cost is caused by the use of nano-silver nitrate higher

Method used

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  • Preparation method of fluorine-containing acrylic acid super-hydrophobic coating
  • Preparation method of fluorine-containing acrylic acid super-hydrophobic coating
  • Preparation method of fluorine-containing acrylic acid super-hydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A raw material formula of fluorine-containing acrylic acid superhydrophobic coating is as follows:

[0029]

[0030] Fluorine-containing acrylic acid superhydrophobic resin solution is prepared according to the following method:

[0031] (1) Use a mixed solvent of butyl acetate and xylene with a volume ratio of 3:1 as the reaction medium, keep the stirring speed at 600 rpm, and control the reaction temperature at 80°C.

[0032] (2) At room temperature, benzoyl peroxide (BPO), styrene (St), methyl methacrylate (MMA), stearyl methacrylate (SMA), 2-hydroxyethyl methacrylate (HEMA), fluorine-containing acrylic monomer perfluoroalkyl ethyl acrylate (FMA) monomer mixed evenly.

[0033] Among them, BPO accounts for 1% of the total mass of all mixed monomers; St:MMA:SMA:HEMA is 6:2:4:1, and the total mass fraction of St, MMA, SMA and HEMA in the mixed solvent reaction medium is 20% ; The mass fraction of FMA in the mixed solvent reaction medium is 10%.

[0034] (3) Drop t...

Embodiment 2

[0036] A raw material formula of fluorine-containing acrylic acid superhydrophobic coating is as follows:

[0037]

[0038] Fluorine-containing acrylic acid superhydrophobic resin solution is prepared according to the following method:

[0039](1) Use a mixed solvent of butyl acetate and xylene with a volume ratio of 3:1 as the reaction medium, keep the stirring speed at 600 rpm, and control the reaction temperature at 80°C.

[0040] (2) At room temperature, benzoyl peroxide (BPO), styrene (St), methyl methacrylate (MMA), stearyl methacrylate (SMA), 2-hydroxyethyl methacrylate (HEMA), fluorine-containing acrylic monomer perfluoroalkyl ethyl acrylate (FMA) monomer mixed evenly.

[0041] Among them, BPO accounts for 1.5% of the total mass of all mixed monomers; St:MMA:SMA:HEMA is 5:2:3:1, and the total mass fraction of St, MMA, SMA and HEMA in the mixed solvent reaction medium is 25%. ; The mass fraction of FMA in the mixed solvent reaction medium was 8%.

[0042] (3) Drop...

Embodiment 3

[0044] A raw material formula of fluorine-containing acrylic acid superhydrophobic coating is as follows:

[0045] Fluorine-containing acrylic superhydrophobic resin solution 10 parts

[0046] Silica nanoparticles (NP2C) 5 parts

[0047] Curing agent (HDI N-3300) 1 part

[0048] Fluorine-containing acrylic acid superhydrophobic resin solution is prepared according to the following method:

[0049] (1) Use a mixed solvent of butyl acetate and xylene with a volume ratio of 3:1 as the reaction medium, keep the stirring speed at 100 rpm, and control the reaction temperature at 70°C.

[0050] (2) At room temperature, benzoyl peroxide (BPO), styrene (St), methyl methacrylate (MMA), stearyl methacrylate (SMA), 2-hydroxyethyl methacrylate (HEMA), fluorine-containing acrylic monomer perfluoroalkyl ethyl acrylate (FMA) monomer mixed evenly.

[0051] Among them, BPO accounts for 0.1% of the total mass of all mixed monomers; St:MMA:SMA:HEMA is 5:2:1:1, and the total mass fraction of S...

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Abstract

The invention discloses a preparation method of a fluorine-containing acrylic acid super-hydrophobic coating. The fluorine-containing acrylic acid super-hydrophobic coating disclosed by the invention is prepared from the following raw materials in weight percentage: 35-80% of fluorine-containing acrylic acid super-hydrophobic resin solution, 5-45% of silicon dioxide nanoparticle, 1-10% of curing agent, and 0-10% of auxiliaries. The prepared super-hydrophobic coating has good super-hydrophobic performance and other application performances and is particularly applied to anti-corrosion and waterproof occasions on the surfaces of air conditioner aluminium foils; related products imported from the abroad in the current market can be replaced; the fluorine-containing acrylic acid super-hydrophobic coating disclosed by the invention is very wide in application prospect and potential.

Description

[technical field] [0001] The invention relates to a preparation method of a fluorine-containing acrylic superhydrophobic paint, and the prepared paint product is suitable for anticorrosion and waterproof occasions on the surface of air-conditioning aluminum foils. [Background technique] [0002] In the past ten years, with the continuous improvement of people's living standards, the demand for household air conditioners has grown rapidly. In 2011, the annual sales volume of household air conditioners in my country reached 10.44 million units, and has been growing at a rate of 15%. The heat exchanger is a very important working part in air conditioning equipment, which is made of aluminum foil with a thickness of about 1mm. In order to obtain good thermal performance, air-conditioning heat exchangers usually adopt a structure in which small-pitch, complex-shaped aluminum foil cooling fins are connected to internally threaded round copper tubes to enhance the heat exchange ef...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08G18/62C08F212/08C08F220/14C08F220/18C08F220/28C08F220/22
Inventor 聂建华林跃华王俊
Owner ZHONGSHAN POLYTECHNIC
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