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Method of preparing fluororesin for electrostatic spraying by dispersion polymerization and coating application of resin

A technology of electrostatic spraying and dispersion polymerization, which is applied in the direction of coating, etc., can solve the problems of complex preparation process of fluororesin, complex preparation process, and decline of coating weather resistance, and achieve excellent storage stability, excellent comprehensive performance, and simple preparation process. Effect

Inactive Publication Date: 2014-09-10
JUHUA GROUP TECH CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent CN02811206.7 is due to the introduction of p-tert-butyl vinyl benzoate unit in fluoropolymer, resulting in easy yellowing and poor weather resistance of the coating; Coating weather resistance decline problem
Patent CN02817589.1 uses bifluoropolymer curing system, the coating preparation process is complicated and the reproducibility is poor
Patent CN03802460.8 obtains a fluorocarbon powder coating with excellent weather resistance, high gloss and high impact strength through the modification of fluorine-containing copolymerized core-shell particles, but the preparation process is complicated, operation control is difficult, and the production cost is high
[0007] The fluororesin for electrostatic spraying prepared by the prior art has problems such as complex preparation process and performance defects

Method used

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  • Method of preparing fluororesin for electrostatic spraying by dispersion polymerization and coating application of resin
  • Method of preparing fluororesin for electrostatic spraying by dispersion polymerization and coating application of resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Through the cycle process of vacuuming and high-purity nitrogen replacement, the high-pressure reactor is deoxidized so that the oxygen content in the reactor is less than 23ppm. Then add 100 parts of deoxidized ionized water, 100 parts of ethanol, 25 parts of n-butyl vinyl ether, 10 parts of Veova9 monomer, 8 parts of hydroxybutyl vinyl ether, 1 part of crotonic acid, tert-butyl peroxy tert-valerate 1 part of ester, and the inside of the kettle was replaced twice with high-purity nitrogen again to remove residual oxygen in the solvent, and 55 parts of chlorotrifluoroethylene were introduced. Stir, slowly raise the temperature to 55°C, and maintain the reaction temperature between 53-57°C. After 12 hours of reaction, use cooling water to lower the temperature of the reactor to below 30°C to stop the reaction, recover the unreacted gas phase monomer and discharge it.

[0042] The resin particles and the solvent are separated by centrifugation and washed with ethanol; the...

Embodiment 2-6

[0044] Using the same process as in Example 1, the specific formula and process conditions are shown in Table 1.

[0045] The test data of table 1 embodiment 1-6 (all are mass parts in the table)

[0046] project

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

de-ionized water

100

80

85

130

90

90

ethanol

100

115

Ethylene glycol

120

tert-butanol

70

110

acetone

110

Chlorotrifluoroethylene

55

45

60

50

55

55

n-Butyl vinyl ether

25

19.9

vinyl acetate

35

17

vinyl butyrate

18

23

Veova9

10

10.5

20

12

10

Veova10

7

3

2

hydroxybutyl vinyl ether

8

Hydroxyethyl vinyl ether ...

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PUM

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Abstract

The invention discloses a method of preparing fluororesin for electrostatic spraying by dispersion polymerization and a coating application of the resin. The method comprises the following steps: by adopting a mixed solvent as a dispersing medium and a compound of an inorganic peroxide and an organic peroxide or an organic azo compound as a compound initiator, preparing a quinary copolymer of trifluorochloro ethylene, a linear alkyl vinyl ester or vinyl ether monomer, a tertiary carbonate monomer, a hydroxyl monomer and a carboxylic monomer; carrying out centrifugal separation, washing and vacuum drying steps on the obtained copolymer to obtain fluororesin powder; directly using the powder which is not coarsely grinded to prepare the electrostatic spraying coating. The electrostatic spraying coating prepared by the quinary copolymerized fluororesin is excellent in storage stability and excellent in weather resistance, corrosion resistance, decorative effect, glossiness, retention and the like.

Description

technical field [0001] The present invention relates to a method for preparing fluororesin for electrostatic spraying by dispersion polymerization and the coating application of the resin, in particular to a dispersion polymerization process of five-component copolymerized fluororesin with chlorotrifluoroethylene as the main component for electrostatic spraying and the resin The coating application belongs to the technical field of synthesis and application of fluororesin for electrostatic spraying. Background technique [0002] Thermosetting fluorine-containing resin coatings have extraordinary weather resistance, corrosion resistance and antifouling properties, and are widely used in: emerging marine engineering - offshore facilities, coastal and bay structures and offshore oil drilling platforms, etc.; modern transportation - bridges , ships, containers, trains, automobiles, highway and railway guardrails, etc.; important energy industries - oil pipelines, oil tanks, powe...

Claims

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Application Information

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IPC IPC(8): C08F214/24C08F216/18C08F216/14C08F220/04C08F218/08C08F218/10C08F220/28C08F220/06C08F220/64C08F2/00C09D127/12C09D7/12
Inventor 肖瑞厚刘海波裴金东张广欣王树华
Owner JUHUA GROUP TECH CENT
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