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Hydrophobic dust-proof coating for greenhouse film, a preparing method thereof and applications of the coating

A dust-proof coating and hydrophobic technology, applied in the direction of anti-fouling/underwater coatings, coatings, paints containing biocide, etc., can solve unfavorable industrial production and environmental protection, difficulty in large-scale promotion and application, complicated coating preparation process, etc. problems, to achieve the effect of easy industrial production and large-scale application, increase storage stability, and good UV resistance

Inactive Publication Date: 2018-05-15
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN201410801766.X discloses a hydrophobic coating with fluorine-containing polymer as the main raw material, which is made by adding inorganic particles, curing agent and diluent. The hydrophobic coating formula is added with cerium oxide, which is toxic and expensive; Chinese patent CN201410818209.9 discloses a fluorine-containing superhydrophobic coating, the coating contains fluorine-containing copolymers, nanomaterials and resin components, the preparation temperature is high, the reaction time is long, the preparation process is complicated, and it is not easy to be popularized and applied on a large scale; Chinese patent CN201510764404.2 discloses a method for a fluorine-containing superhydrophobic coating, which uses a large amount of toxic and flammable N,N-dimethylformamide as a diluent, which is not conducive to industrial production and environmental protection; Chinese patent CN201610405572. 7 discloses a fluorine-containing hydrophobic coating. The preparation process requires oxygen and low-temperature ultraviolet irradiation, and the coating preparation process is complicated.

Method used

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  • Hydrophobic dust-proof coating for greenhouse film, a preparing method thereof and applications of the coating
  • Hydrophobic dust-proof coating for greenhouse film, a preparing method thereof and applications of the coating
  • Hydrophobic dust-proof coating for greenhouse film, a preparing method thereof and applications of the coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 24g of modified fluorocarbon resin to the beaker, add 33.6g of propylene glycol methyl ether acetate, place on a magnetic stirrer, set the speed at 200r / min, room temperature, stir for 10min, fully react, mix well; add 2.4g of toluene diisocyanate , placed on a magnetic stirrer, set the speed at 800r / min, room temperature, stirred for 30min, fully reacted, mixed evenly, and then filtered with 300 mesh gauze to make a mixed emulsion of hydrophobic coating; add 5% deionized water, dilute to construction Viscosity: use 9# coating rod, scrape coating on the plastic film, and let it stand at room temperature for 5 minutes; put the film coated with hydrophobic coating in an oven, and dry it at 70°C for 100 min to obtain the fluorocarbon resin hydrophobic dustproof coating finished layer.

[0034] After testing, the thickness of the hydrophobic and dust-proof coating is 10um, the contact angle between the coating surface and water is 95.4°, and there is no fogging after 5 ...

Embodiment 2

[0036] Add 28g modified fluorocarbon resin to the beaker, add 0.7g silicone modified methyl acrylate, ethyl acrylate mixed solution and 32.9g propylene glycol methyl ether acetate, place on a magnetic stirrer, set the speed at 300r / min, Stir at room temperature for 12 minutes, fully react, mix evenly; add 8.4g of diphenylmethane diisocyanate, place on a magnetic stirrer, set the speed at 850r / min, room temperature, stir for 35min, fully react, mix evenly, and then use 250 mesh gauze Filter to make a mixed emulsion of hydrophobic paint; add 6% deionized water and dilute to the construction viscosity; use a 14# film stick to scrape and coat on the plastic film, and let it stand at room temperature for 6 minutes; put the film coated with hydrophobic paint Put it into an oven and dry at 75°C for 120 minutes to get the finished fluorocarbon resin hydrophobic and dustproof coating.

[0037] After testing, the thickness of the hydrophobic and dust-proof coating is 13um, the contact a...

Embodiment 3

[0039] Add 42.6g of modified fluorocarbon resin to the beaker, add 15g of propylene glycol methyl ether acetate, place it on a magnetic stirrer, set the speed at 400r / min, room temperature, stir for 15min, fully react, and mix well; add 2.4g of diphenyl Methane diisocyanate, placed on a magnetic stirrer, set the speed at 900r / min, room temperature, stirred for 35min, fully reacted, mixed evenly, then filtered with 240 mesh gauze to make a mixed emulsion of hydrophobic coating; add 6% deionized water, Dilute to the construction viscosity; use a 22# coating stick to scrape on the plastic film, and let it stand at room temperature for 6 minutes; put the film coated with the hydrophobic coating in an oven, and dry it at 80°C for 120 minutes to obtain the fluorocarbon resin hydrophobic Dustproof coating finished.

[0040]After testing, the thickness of the hydrophobic and dust-proof coating is 16um, the contact angle between the coating surface and water is 100.9°, and there is no ...

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Abstract

Hydrophobic dust-proof coating for greenhouse film, a preparing method thereof and applications of the coating are disclosed. The coating includes, by mass, 40-71% of modified fluorocarbon resin, 0-1%of a leveling agent, 16-56% of a diluting agent and 4-12% of a curing agent. The preparing method of the coating is also disclosed. The fluorocarbon-resin-containing coating prepared by the method has excellent film forming performance, adhesion and flexibility, good ultraviolet resistance, weather fastness and resistance to dirt, and the like, and is convenient to scrub and simple in process. Aproduction process is substantially free of pollution. The coating is prone to industrial production and large-scale popularization and application.

Description

technical field [0001] The invention belongs to the field of hydrophobic coating preparation technology and surface treatment, and in particular relates to a fluorocarbon resin-based hydrophobic and dust-proof coating for greenhouse films, a preparation method and application thereof. Background technique [0002] In my country's agricultural production, greenhouses play an important role, and in order to improve the effect of greenhouse films, the following functions are required for greenhouse film coatings: (1) good hydrophobicity; (2) excellent dust resistance; (3) Excellent corrosion resistance; (4) Good flexibility. There are many kinds of greenhouse film coatings currently used in the market. Among most coatings, fluorocarbon resin coatings are currently the most outstanding. The most prominent advantages of fluorocarbon coatings are weather resistance and low abrasion, followed by good Self-cleaning, so fluorocarbon coatings will become the mainstream choice for gree...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D127/18C09D5/16C09D7/47C09D7/20C09D7/63
CPCC09D127/12C08L2201/08C09D5/1637C09D5/1668C09D127/18C08L33/04
Inventor 蒋希芝徐磊夏礼如
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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