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Tetrafluororesin and high fluorine-containing acrylate copolymer composite coating and preparation method thereof

A technology of perfluoroalkyl ethyl acrylate and acrylate, which is applied in anti-corrosion coatings, coatings, etc., can solve the problems of low fluorine content of low surface energy polymers, failure to meet anti-corrosion and weather resistance requirements, and limited hydrophobic effect. Achieve the effects of reducing surface energy, improving low gloss, increasing gloss and contact angle

Active Publication Date: 2021-02-02
山东金丰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the energy consumption of this patent is small, the low surface energy polymer used has a low fluorine content, and the hydrophobic effect is limited, so it cannot meet the requirements of excellent anti-corrosion and weather resistance

Method used

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  • Tetrafluororesin and high fluorine-containing acrylate copolymer composite coating and preparation method thereof
  • Tetrafluororesin and high fluorine-containing acrylate copolymer composite coating and preparation method thereof
  • Tetrafluororesin and high fluorine-containing acrylate copolymer composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of high fluorine-containing acrylate copolymer comprises:

[0032] Step 1: Mix 75.6g of trifluoroethyl methacrylate (TFEMA), 32.9g of perfluorooctyl ethyl acrylate and 1.86g of hydroxyethyl acrylate, add to 235g of N,N-dimethylformamide, Stir well;

[0033] Step 2: Add 1.00 g of azobisisobutyronitrile (AIBN) to the solution in step 1 at a rate of 80 drops / min, heat up to 70° C. for polymerization, react for 12 hours, and cool down to stop the reaction;

[0034] Step 3: Completely dissolve the polymer obtained in Step 2 with N,N-dimethylformamide, add deionized water to the dissolved liquid for 3-5 precipitations, and dry in an oven at 100°C.

[0035] Gel Permeation Chromatography (GPC) is used to test the molecular weight of the fluoropolymer prepared in this embodiment. The test condition is that monodisperse polystyrene is used as molecular weight standard, tetrahydrofuran (THF) is used as mobile phase and solvent, and the flow rate is 1.0mL / mi...

Embodiment 2

[0039] The preparation method of high fluorine-containing acrylate copolymer comprises:

[0040] Step 1: Mix 75.6g of trifluoroethyl methacrylate (TFEMA), 267.6g of perfluorohexylethyl acrylate and 3.92g of hydroxyethyl acrylate, add to 235g of dichloromethane, and stir evenly;

[0041] Step 2: Add 1.50 g of azobisisobutyronitrile (AIBN) to the solution in step 1 at a rate of 100 drops / min, heat up to 70°C for polymerization, react for 12 hours, cool down to stop the reaction;

[0042] Step 3: Completely dissolve the polymer obtained in step 2 with dichloromethane, add deionized water to the dissolved liquid for 3-5 times to precipitate, and dry in an oven at 100°C.

[0043] The molecular weight of the fluoropolymer prepared in this example was determined to be 57826.

Embodiment 3

[0045] The preparation method of high fluorine-containing acrylate copolymer comprises:

[0046] Step 1: Mix 75.6g of trifluoroethyl methacrylate (TFEMA), 551.2g of perfluorobutyl ethyl acrylate and 7.84g of hydroxyethyl acrylate, add TFEMA to the constant pressure low liquid funnel, and the perfluorobutyl Ethyl acrylate and hydroxyethyl acrylate were directly added to 235g of dimethyl sulfoxide, and 1.00g of tert-butyl peroxypivalate (TBPPI) was added to the solution, and stirred evenly;

[0047] Step 2: Gradually drop TFEMA into Step 1 at a rate of 80 drops / min, while raising the temperature to 70°C for polymerization;

[0048] Step 3: After all TFEMA is added dropwise, add 0.5g TBPPI again, react for 12 hours, cool down to stop the reaction;

[0049] Step 4: Completely dissolve the polymer obtained in Step 2 with dimethyl sulfoxide, add deionized water to the dissolved liquid for 3-5 precipitations, and dry in an oven at 100°C.

[0050] The molecular weight of the fluorop...

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Abstract

The invention discloses a composite coating of tetrafluororesin and high fluorine-containing acrylate copolymer and a preparation method thereof, belonging to the field of coatings. The composite coating of tetrafluororesin and high fluorine-containing acrylate copolymer is composed of the following components in parts by weight: 20-80 parts of tetrafluororesin, 5-20 parts of high-fluorine-containing acrylate copolymer, and 0.1-1 part of wetting agent , 2.0-10 parts of antifreeze moisturizing agent, 0.2-1 part of preservative, 0.1-10 parts of crosslinking agent, and 10-50 parts of solvent. The tetrafluororesin and high fluorine-containing acrylate copolymer composite coating of the invention has the characteristics of superhydrophobicity, weather resistance and anticorrosion, and the production process is simple and easy, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a composite coating of tetrafluororesin and high fluorine-containing acrylate copolymer and a preparation method thereof. Background technique [0002] The development of super-hydrophobic coatings in the world began in the 1950s. Until the end of the 1990s, with the development of surface science and technology, especially the improvement of surface research techniques, super-hydrophobic coatings were prepared by imitating the surface structure and properties of lotus leaves. The layer has aroused people's attention. Exploring and realizing the industrial production of superhydrophobic coatings is a hot spot and difficulty faced by the coatings industry at present. Wettability is an important property of a solid surface, and is generally characterized by the contact angle between a liquid droplet and a solid surface. When the contact angle between a water droplet and a solid surface is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D133/16C09D5/08C09D7/65C09D7/63
CPCC08L2201/08C09D5/08C09D127/18C08L33/16C08K5/5419C08K5/053
Inventor 张书香张炉青郭彦杉
Owner 山东金丰新材料科技有限公司
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