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A kind of preparation method of tetrafluorofluorocarbon powder coating resin

A technology of tetrafluorocarbon powder and resin, applied in powder coatings, etc., can solve the problems of low glass transition temperature, environmental hazards, low fluorine content of coatings, etc., achieve high glass transition temperature, increase fluorine content, and improve product performance excellent effect

Active Publication Date: 2018-03-30
SHANDONG HUAFU FLUORO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the obtained product is still a solvent-based liquid product, and a large amount of volatile organic compounds will be produced during the drying process of the coating, which will cause environmental hazards, and the fluorine content of the prepared coating is not high, and the glass transition temperature is also low. Existing thermosetting FEVE fluorine The glass transition temperature of carbon resin is generally not higher than 30 ℃

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A tetrafluorocarbon powder coating resin, the raw material is composed of: 360 grams of tetrafluoroethylene, 100 grams of isobutylene, 170 grams of vinyl neononanoate, 80 grams of ethylene glycol monopropylene ether, and 8 grams of undecylenic acid, 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether 380 g, initiator (azobisisobutyronitrile and dibenzoyl peroxide 1:1) 6 g.

[0034] Its preparation method, steps are:

[0035] 1) Add vinyl neononanoate, ethylene glycol monopropenyl ether, undecenoic acid and 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether into the autoclave medium, airtight, mix and stir to dissolve, and slowly add initiator (half of azobisisobutyronitrile and dibenzoyl peroxide) under stirring to make it completely dissolved;

[0036] 2) Evacuate the polymerization kettle, replace with nitrogen when the vacuum degree is 97kPa, make the gauge pressure -0.05Mpa, repeat this twice to remove the oxygen in the reaction kettle, and use a membrane compress...

Embodiment 2

[0040] A tetrafluorocarbon powder coating resin, the raw material is composed of: 260 grams of tetrafluoroethylene, 120 grams of isobutylene, 130 grams of vinyl neononanoate, 55 grams of ethylene glycol monopropylene ether, and 4 grams of undecylenic acid, 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether 440 g, initiator (azobisisobutyronitrile and dibenzoyl peroxide 1:1) 6 g.

[0041] Its preparation method, steps are:

[0042] 1) Add vinyl neononanoate, ethylene glycol monopropenyl ether, undecenoic acid and 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether into the autoclave medium, airtight, mix and stir to dissolve, and slowly add initiator (half of azobisisobutyronitrile and dibenzoyl peroxide) under stirring to make it completely dissolved;

[0043] 2) Evacuate the polymerization kettle, replace with nitrogen when the vacuum degree is 97kPa, make the gauge pressure -0.05Mpa, repeat this twice to remove the oxygen in the reaction kettle, and use a membrane compress...

Embodiment 3

[0047] A tetrafluorocarbon powder coating resin, the raw material is composed of: 240 grams of tetrafluoroethylene, 60 grams of isobutylene, 120 grams of vinyl neononanoate, 76 grams of ethylene glycol monopropylene ether, and 5 grams of undecylenic acid, 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether 520 g, initiator (azobisisobutyronitrile and dibenzoyl peroxide 1:1) 4 g.

[0048] Its preparation method, steps are:

[0049] 1) Add vinyl neononanoate, ethylene glycol monopropenyl ether, undecenoic acid and 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether into the autoclave medium, airtight, mix and stir to dissolve, and slowly add initiator (half of azobisisobutyronitrile and dibenzoyl peroxide) under stirring to make it completely dissolved;

[0050] 2) Evacuate the polymerization kettle, replace with nitrogen when the vacuum degree is 97kPa, make the gauge pressure -0.05Mpa, repeat this twice to remove the oxygen in the reaction kettle, and use a membrane compressi...

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Abstract

The invention relates to a preparation method of tetrafluoro fluorocarbon powder coating resin, and especially relates to a method for preparing the tetrafluoro fluorocarbon powder coating resin by using tetrafluoroethyl trifluoroethyl ether as a polymerization solvent, polymerizing isobutene used as copolymerization monomer with a tetrafluoroethene monomer and matching with other functional monomers. The method improves the vitrification point of the tetrafluoro fluorocarbon powder coating resin, and effectively increases the fluorine content of the resin.

Description

technical field [0001] The invention relates to a tetrafluorocarbon powder coating resin and a preparation method thereof, in particular to using tetrafluoroethyl trifluoroethyl ether as a polymerization solvent, using isobutylene as a comonomer and tetrafluoroethylene monomer to polymerize, A new method for the preparation of powder resins from other functional monomers. The method can increase the glass transition temperature of the tetrafluoro powder resin, and also can effectively increase the fluorine content of the resin. Background technique [0002] Fluorocarbon coatings are unique in the development of coatings industry due to their various excellent properties, especially chemical resistance, heat resistance and weather resistance are much better than other coatings, and have great market application prospects. [0003] The molecular weight of solid fluorocarbon powder coating resin is relatively low, which greatly reduces its melting point and baking temperature....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D5/03C08F214/26C08F210/10
CPCC08F214/265C09D5/03C09D127/18C08F210/10
Inventor 张景海郭希刚陆飞刘世慧石养渡付泽宏刘庆歌
Owner SHANDONG HUAFU FLUORO CHEM