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High weatherability self-cleaning fluorocarbon coating

A fluorocarbon coating, high weather resistance technology, applied in the direction of coating, etc., can solve the problems of high VOC content, misunderstanding, low fluorine content of coating, etc.

Inactive Publication Date: 2010-09-08
北京航材百慕新材料技术工程股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] (1) Benzene solvents are usually used, and their VOC content is relatively high, which will cause certain harm to the human body and the environment;
[0016] (2) Fluorocarbon coatings that use chlorotrifluoroethylene vinyl acetate or chlorotrifluoroethylene alkenyl ether as polymers are generally used in the market. Although their performance is better than that of acrylic polyurethane coatings, due to the fluorine content of the coating Compared with high-end tetrafluoroethylene alkenyl ether fluorocarbon coatings, its performance is still far behind;
[0017] (3) There are misunderstandings about the stain resistance of FEVE coatings: due to the large hydrophilic contact angle on the surface of the paint film, it should have good stain resistance
However, the contact angle between FEVE coating film and water is generally 85°~95°, which is more likely to cause pollution

Method used

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  • High weatherability self-cleaning fluorocarbon coating
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  • High weatherability self-cleaning fluorocarbon coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Preparation of component A: 3 grams of anti-aging agent (wherein ultraviolet absorber phenyl salicylate: quencher nickel di-n-butyldithiocarbamate: free radical scavenger bis(1,2,2,6, The molar ratio of 6-pentamethyl-4-piperidinyl) sebacate is 1.0:0.6:0.6), 2.5 grams of self-cleaning aid fluorine-modified siloxane, 2 grams of modified polysiloxane type fluid Leveling agent, 1.5 grams of wetting and dispersing agent, added to 60 grams of fluorocarbon resin, 10 grams of mixed solvent made of propylene glycol methyl ether acetate and butyl acetate according to 1:2 and stirred for more than 0.5 hours, so that the two were fully mixed Evenly, add 30 grams of titanium dioxide, 3 grams of 1000-mesh mica to the above solution, and stir for more than 0.5 hours until uniform. Grind the mixed slurry to a fineness below 25 μm to obtain a white slurry. Add 40 grams of resin and 5 grams of mixed solvent to the above white paste to prepare component A of the white paint.

[0067] Pr...

Embodiment 2

[0070] Preparation of component A: 3 grams of anti-aging agent (wherein ultraviolet absorber benzophenone: quencher thiobisphenol nickel: free radical scavenger 4-piperidinyl) the molar ratio of sebacate is 1.0: 0.9: 0.8), 2.5 grams of self-cleaning aids, 2 grams of modified polysiloxane type leveling agents, 1.5 grams of wetting and dispersing agents, added to 60 grams of fluorocarbon resin, 10 grams of a mixed solvent made of propylene glycol methyl ether acetate and butyl acetate at a ratio of 1:2 were stirred for more than 0.5 hours to fully mix the two, and 28 grams of medium chrome yellow and 3 grams of talc Add the powder into the above resin solution and stir for more than 0.5 hours until uniform. Grind the mixed slurry to a fineness below 25 μm to obtain medium chrome yellow slurry. Add 40 grams of resin and 5 grams of mixed solvent to the above color paste to prepare component A of medium chrome yellow paint.

[0071] Preparation of component B: Dissolve 65g of HDI...

Embodiment 3

[0074] Preparation of component A: 3 grams of anti-aging agent (wherein UV absorber benzotriazole ester: quencher phosphonic acid monoester nickel: free radical scavenger bis(1,2,2,6,6-pentamethyl The molar ratio of -4-piperidinyl) sebacate is 1.5: 0.8: 0.6), 2.5 grams of self-cleaning additives, 2 grams of modified polysiloxane type leveling agents, 1.5 grams of wetting and dispersing agents, adding Stir in 60 grams of fluorocarbon resin, 10 grams of mixed solvent made of propylene glycol methyl ether acetate and butyl acetate at 1:2 for more than 0.5 hours, so that the two are fully mixed evenly, and 28 grams of chrome yellow, 3 grams Add talcum powder into the above resin solution and stir for more than 0.5 hours until uniform. Grind the mixed slurry to a fineness below 25 μm to obtain medium chrome yellow slurry. Add 40 grams of resin and 5 grams of mixed solvent to the above color paste to prepare component A of medium chrome yellow paint.

[0075] Preparation of compon...

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Abstract

The invention discloses a tetrafluoroethylene-vinyl ether copolymer fluorocarbon coating which can be in curing under the normal temperature and contains an anti-aging composite additive and self-cleaning additive and a preparation method thereof.

Description

technical field [0001] The invention relates to a tetrafluoroethylene-vinyl ether copolymerized fluorocarbon coating which can be cured at normal temperature and contains an anti-aging composite auxiliary agent and a self-cleaning auxiliary agent and a preparation method thereof. Background technique [0002] Fluorocarbon resins are homopolymerized or copolymerized with fluorine-containing olefins, such as tetrafluoroethylene (TFE), chlorotrifluoroethylene (CTFE), vinylidene fluoride (VDF), vinyl fluoride (VF), etc., as basic units, or with This is based on the copolymerization with other monomers, and the self-polymerization or copolymerization of monomers containing fluorocarbon chemical bonds on the side chains to obtain polymers with more fluorocarbon bonds (F-C) in the molecular structure. The coatings based on it are called fluorocarbon resin coatings (Fluorocarbons resin Coatings). It is called "Fluorocarbon Coating" in Western countries such as Europe and the United...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D5/00
Inventor 李运德徐永祥于一川师华杨振波黄玖梅胡立明张亮姜小刚彭登轩沙金商汉章马建旗马震李春
Owner 北京航材百慕新材料技术工程股份公司
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