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Cyanogroup-containing polyarylethersulfone/polyethersulfone coating composition and its preparation method and coating process

A polyarylethersulfone and composition technology, which is applied in the field of polyarylethersulfone/polyethersulfone coating composition and its preparation, can solve the problems of poor adhesion, insufficient phase separation and dispersion of polyethersulfone coating, and achieves The effect of dense coating, improved adhesion and excellent performance

Active Publication Date: 2020-01-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The solutions provided by the prior art cannot solve the problem of poor adhesion of polyethersulfone coatings. The present invention selects cyano-containing polyarylethersulfone with high temperature resistance and can meet the temperature requirements of high-temperature curing process to add polyethersulfone Among them, compared with the polyethersulfone coating, the prepared coating has significantly improved adhesion, and at the same time, the cyano-containing polyarylethersulfone and polyethersulfone selected by the present invention have similar structures, so it can ensure that both It can be well compatible, avoid problems such as phase separation and insufficient dispersion, and make the prepared coating uniform, smooth in appearance and excellent in performance

Method used

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  • Cyanogroup-containing polyarylethersulfone/polyethersulfone coating composition and its preparation method and coating process
  • Cyanogroup-containing polyarylethersulfone/polyethersulfone coating composition and its preparation method and coating process
  • Cyanogroup-containing polyarylethersulfone/polyethersulfone coating composition and its preparation method and coating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The ratio of each component in the coating composition is as follows:

[0052]

[0053] According to the above ratio, under the stirring speed of 3800r / min, the polyethersulfone resin with the logarithmic reduced viscosity of 0.34 and the polyarylethersulfone CN3 (x=0.9, y=0.1) containing cyano group were dissolved in the N- Add chromium trioxide, titanium dioxide and organic bentonite to the complex solvent composed of methylpyrrolidone, dimethylacetamide, toluene and methyl ethyl ketone in sequence, and grind for 2 hours in a sand mill to make a coating. Appropriately add a diluent to the ground paint composition to adjust the viscosity, and then use an air spray gun and an air compressor to spray a paint with a suitable viscosity on a metal substrate that has not been sandblasted but has been pretreated, and bake it at 100 ° C. After 30 minutes, the temperature was raised to 375°C and cured for 10 minutes to obtain a coating, and then cooled to room temperature fo...

Embodiment 2

[0057] The ratio of each component in the coating composition is as follows:

[0058]

[0059] According to the above ratio, under the stirring speed of 3600r / min, the polyethersulfone resin with the logarithmic reduced viscosity of 0.33 and the polyarylethersulfone CN1 (x=0.1, y=0.9) containing cyano group were dissolved in the N- Add dichromium trioxide and fumed silicon dioxide in sequence to a complex solvent composed of methylpyrrolidone, dimethylacetamide, toluene and methyl ethyl ketone, and grind in a sand mill for 4 hours to make a coating. Appropriately add a diluent to the ground coating composition to adjust the viscosity, and then use an air spray gun and an air compressor to spray a coating with a suitable viscosity on a metal substrate that has not been sandblasted but has been pretreated, and bake it at 110 ° C. After 10 minutes, the temperature was raised to 385°C and cured for 5 minutes to obtain a coating, and then cooled to room temperature for testing. ...

Embodiment 3

[0064] The ratio of each component in the coating composition is as follows:

[0065]

[0066] According to the above ratio, under the stirring speed of 3400r / min, the polyethersulfone resin with the logarithmic reduced viscosity of 0.34 and the polyarylethersulfone CN1 (x=0.5, y=0.5) containing cyano group were dissolved in the N- Add graphite, titanium dioxide, and organic bentonite to the complex solvent composed of methylpyrrolidone, dimethylacetamide, toluene, and methyl ethyl ketone in sequence, and grind in a sand mill for 6 hours to make a coating. Appropriately add a diluent to the ground coating composition to adjust the viscosity, and then use an air spray gun and an air compressor to spray a coating with a suitable viscosity on a metal substrate that has not been sandblasted but has been pretreated, and bake it at 120 ° C. After 15 minutes, the temperature was raised to 360°C to cure for 15 minutes to obtain a coating, and then cooled to room temperature for tes...

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Abstract

The invention provides a cyano-containing polyarylethersulfone / polyethersulfone coating composition and a preparation method thereof and belongs to the technical field of coating. The cyano-containingpolyarylethersulfone / polyethersulfone coating composition takes a mixture of polyethersulfone resin and cyano-containing polyarylethersulfone resin as film-forming resin; a preparation technology comprises the following steps: dissolving the polyethersulfone resin and the cyano-containing polyarylethersulfone resin into a compound solvent composed of N-methylpyrrolidone, dimethylacetylamide, toluene, butanone and the like at a stirring peed of 3200 to 3800r / min; then adding components including pigment and filler and the like in sequence and grinding in a sand grinder for 2 to 6h. The preparation and coating technologies of the coating, provided by the invention, are simple to operate, production equipment is easy to realize and an applicable range is relatively wide; a prepared coating layer has good impact resistance, corrosion resistance and the like; meanwhile, the cyano-containing polyarylethersulfone is added, so that the attachment force of the coating layer is further improvedwhen being compared with that of a pure polyethersulfone coating layer.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a cyano group-containing polyaryl ether sulfone / polyether sulfone coating composition and a preparation method thereof. Background technique [0002] A substance that can dry and form a film when applied to the surface of an object under certain conditions, and has special functions such as protection, decoration, and rust prevention is called a coating. The application of coatings began in prehistoric times and has a history of at least 4,000 years in our country. Its anti-corrosion and decorative functions on the surface of materials have made it widely used. Coatings are mainly composed of film-forming substances, solvents, pigments and fillers, and additives, the most important of which are film-forming substances. With the development of the times, the choice of film-forming substances is no longer the early natural substances but polymer resins with excellent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D181/06C09D7/61C09D5/08B05D3/02B05D7/24
CPCB05D3/0254B05D7/24C08K2003/2241C08K2003/2251C08K2003/3009C08L2201/08C08L2205/025C09D5/08C09D5/18C09D181/06C08L81/06C08K13/06C08K3/346C08K3/22C08K3/36C08K3/04C08K3/30
Inventor 关绍巍张博祝世洋关尔佳曹光兆
Owner JILIN UNIV
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