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A kind of fluorocarbon modified waterborne alkyd resin coating and its preparation method and application

A water-based alkyd resin and fluorocarbon modification technology, which is applied in polyester coatings, coatings, etc., can solve the problems of high price and no significant improvement in the resistance of water-based alkyd coatings, and achieve excellent salt spray resistance. Effect

Active Publication Date: 2022-03-11
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to improve the water resistance, acid and alkali resistance, and salt spray resistance of water-based alkyd resin coatings, there have been a few reports of modifying water-based alkyd resins with fluorine-containing materials in recent years, but these fluorine-modified alkyd resins are generally made of "fluorine It is prepared by copolymerization of ethylenic monomer + acrylate, and the price of fluorine-containing acrylate monomer is high, and the resistance of water-based alkyd coating prepared with it has not been greatly improved

Method used

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  • A kind of fluorocarbon modified waterborne alkyd resin coating and its preparation method and application
  • A kind of fluorocarbon modified waterborne alkyd resin coating and its preparation method and application
  • A kind of fluorocarbon modified waterborne alkyd resin coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The fluorocarbon modified waterborne alkyd resin coating of the present embodiment comprises by weight:

[0027]

[0028] The specific preparation steps of the fluorocarbon modified waterborne alkyd resin coating of the present embodiment include:

[0029] 1) At room temperature, first add 15 parts of phthalic anhydride and 10 parts of FEVE resin (solution) into a three-necked flask with a condenser tube-water separator, and stir for 2 hours at 70°C.

[0030] 2) Then add 35 parts of linseed oil, 10 parts of trimethylolpropane, 5 parts of pentaerythritol, 2 parts of adipic acid, 10 parts of benzoic acid, 2 parts of polyether PPG1000 and 2 parts of xylene. Raise the temperature to 135°C and keep it warm for 20 minutes. At this time, organic streams flow out of the water separator. Continue to heat up to 180°C and keep warm for 1h.

[0031] 3) Add 0.02 parts of lithium hydroxide, then raise the temperature to 230°C, vacuumize, keep warm for 3 hours, check the acid val...

Embodiment 2

[0041] The fluorocarbon modified waterborne alkyd resin coating of the present embodiment comprises by weight:

[0042]

[0043] The specific preparation steps of the fluorocarbon modified waterborne alkyd resin coating of the present embodiment include:

[0044] 1) At room temperature, first add 17 parts of phthalic anhydride and 15 parts of FEVE resin (solution) into a three-neck flask with a condenser tube-water separator, and stir for 2 hours at 75°C.

[0045] 2) Then add 30 parts of linseed oil, 12 parts of trimethylolpropane, 7 parts of pentaerythritol, 3 parts of adipic acid, 11 parts of benzoic acid, 3 parts of polyether PPG1000 and 3 parts of xylene. Raise the temperature to 140°C and keep it warm for 30 minutes. At this time, organic streams flow out of the water separator. Continue to heat up to 185°C and keep warm for 1h.

[0046] 3) Add 0.03 parts of lithium hydroxide, then raise the temperature to 235°C, vacuumize, keep the temperature for 3 hours, and when ...

Embodiment 3

[0056] The fluorocarbon modified waterborne alkyd resin coating of the present embodiment comprises by weight:

[0057]

[0058] The specific preparation steps of the fluorocarbon modified waterborne alkyd resin coating of the present embodiment include:

[0059] 1) At room temperature, first add 20 parts of phthalic anhydride and 25 parts of FEVE resin (solution) into a three-necked flask with a condenser tube-water separator, and stir for 2 hours at 80°C.

[0060] 2) Then add 35 parts of linseed oil, 15 parts of trimethylolpropane, 10 parts of pentaerythritol, 5 parts of adipic acid, 12 parts of benzoic acid, 5 parts of polyether PPG1000 and 5 parts of xylene. Raise the temperature to 150°C and keep it warm for 35 minutes. At this time, organic streams flow out of the water separator. Continue to heat up to 190°C and keep warm for 1.5h.

[0061] 3) Add 0.05 parts of lithium hydroxide, then raise the temperature to 240°C, vacuumize, keep the temperature for 3.5 hours, and ...

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Abstract

The invention discloses a fluorocarbon-modified water-based alkyd resin coating and its preparation method and application, belonging to the technical field of alkyd resin. The fluorocarbon-modified water-based alkyd resin coating comprises 10 parts by weight of FEVE fluorocarbon resin ~25 parts, 25~35 parts of linseed oil, 10~15 parts of trimethylolpropane, 5~10 parts of pentaerythritol, 15~20 parts of phthalic anhydride, 10~12 parts of benzoic acid, 2~5 parts of adipic acid, polyether 2-5 parts of PPG1000, 5 parts of xylene, 0.02 part of lithium hydroxide, appropriate amount of triethylamine, 10-12 parts of propylene glycol methyl ether; the invention also discloses the preparation method and application of fluorocarbon modified water-based alkyd resin coating, The fluorocarbon modified water-based alkyd resin coating prepared by the present invention has excellent early water resistance, and the early water resistance exceeds more than 7 days; it has excellent late water resistance, generally exceeding 10 days; it has excellent salt spray resistance, exceeding 13 days.

Description

technical field [0001] The invention belongs to the technical field of alkyd resins, and in particular relates to a fluorocarbon modified water-based alkyd resin coating and its preparation method and application. Background technique [0002] At present, the water-based self-drying alkyd resin is favored by the market because it can have a better drying speed at low temperature, endow it with better construction performance at low temperature, and at the same time, it is cheap. However, in order to improve the water resistance, acid and alkali resistance, and salt spray resistance of water-based alkyd resin coatings, there have been a few reports in recent years on the use of fluorine-containing materials to modify water-based alkyd resins, but these fluorine-modified alkyd resins are generally made of "fluorine It is prepared by copolymerization of vinyl monomer + acrylate, and the price of fluorine-containing acrylate monomer is high, and the resistance of water-based alk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/08C08G63/682
CPCC09D167/08C08G63/6828
Inventor 张发兴卫晓利
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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