Low-temperature curing polyether sulfone coating composition and preparation method thereof, as well as coating process

A technology of polyethersulfone and composition, which is applied in the field of low-temperature curing polyethersulfone coating composition and its preparation, which can solve the problems of polyethersulfone coatings that require high-temperature curing performance and decrease, and achieve acid, alkali, salt and organic solvent resistance Strong ability, good anti-corrosion performance, good performance effect

Active Publication Date: 2017-06-30
JILIN JITU GAOKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the shortcomings and deficiencies that polyethersulfone coatings need to be cured at high temperature and have significantly reduced performance when cured at low temperature, and provide a polyethersulfone coating composition that can also have excellent performance when cured at low temperature and its preparation method

Method used

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  • Low-temperature curing polyether sulfone coating composition and preparation method thereof, as well as coating process
  • Low-temperature curing polyether sulfone coating composition and preparation method thereof, as well as coating process
  • Low-temperature curing polyether sulfone coating composition and preparation method thereof, as well as coating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]At a stirring speed of 3800r / min, 18g of polyethersulfone resin with an inherent viscosity of 0.34 was dissolved in a composite solvent composed of 36g of dimethylacetamide, 28g of toluene, and 8g of methyl ethyl ketone, and then 4g of polyethersulfone resin was added in sequence. Tetrafluoroethylene micropowder, 3.5g of chromium trioxide, 0.5g of titanium dioxide, 1.4g of organic bentonite and 3.3g of epoxy resin E44 were ground in a sand mill for 2 hours to prepare a coating. Add 2.3g modified phenalkamide curing agent LITE3100 (manufactured by U.S. Cardolite Company) before spraying, stir for 0.3 hour and ripen, utilize air spray gun and air compressor to spray the coating after ripening on the steel plate through sandblasting, at 168 °C for 2 hours, then cooled to room temperature for testing.

[0049] Test Results:

[0050]

Embodiment 2

[0052] At a stirring speed of 3600r / min, dissolve 20g of polyethersulfone resin with a logarithmic viscosity of 0.34 in a composite solvent consisting of 42g of dimethylacetamide and 30g of toluene, and then add 1g of polytetrafluoroethylene micropowder in sequence , 4g of chromium trioxide, 1g of fumed silica and 4g of epoxy resin E44 were ground in a sand mill for 4 hours to make a coating. Before spraying, add 3g of modified phenalkamide curing agent LITE3100 (manufactured by Cardolite, USA), stir for 0.4 hours to mature, and use an air spray gun and an air compressor to spray the cured coating on the steel plate through sandblasting, at 170 ° C Bake dry for 6 hours, then cool to room temperature for testing.

[0053] Test Results:

[0054]

Embodiment 3

[0056] At a stirring speed of 3400r / min, 15g of polyethersulfone resin with an inherent viscosity of 0.34 was dissolved in a composite solvent composed of 30g of dimethylacetamide, 35g of toluene, and 8g of methyl ethyl ketone, and then 5g of polyethersulfone resin was added in sequence. Tetrafluoroethylene micropowder, 2g of graphite, 4g of titanium dioxide, 2g of organic bentonite and 2.5g of epoxy resin E44 were ground in a sand mill for 6 hours to prepare a coating. Add 1.6g modified phenalkamide curing agent LITE3100 (manufactured by U.S. Cardolite company) before spraying, stir for 0.5 hour and ripen, utilize air spray gun and air compressor to spray the coating after ripening on the steel plate through blasting, at 170 °C for 2 hours, then cooled to room temperature for testing.

[0057] Test Results:

[0058]

[0059]

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PUM

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Abstract

The invention discloses a low-temperature curing polyether sulfone coating composition and a preparation method thereof, as well as a coating process, and belongs to the technical field of coatings. The low-temperature polyether sulfone coating composition is prepared from polyether sulfone resin, epoxy resin, polytetrafluoroethylene, a curing agent and a diluent. The preparation process comprises the following steps: dissolving the polyether sulfone resin in a composite solvent prepared from dimethylacetamide, methylbenzene and butanone at the stirring speed of 3,200 to 3,800 r/min, then adding the polytetrafluoroethylene and the epoxy resin in sequence, grinding the materials in a grinding machine for 2 to 6 hours, adding the curing agent before spraying, stirring for 0.2 to 0.5 hour for curing, spraying a sandblast metal base material with the cured coating through an air spraying gun and an air compressor, and drying at 150 to 170 DEG C for 2 to 6 hours. According to the preparation method disclosed by the invention, low-temperature curing of the polyether sulfone coating is realized; a prepared coating layer is high in adhesion force, impact resistance, wear resistance, hydrophobicity, corrosion resistance and the like; the preparation and coating process is easy to operate; production equipment is easy to realize and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a low-temperature curing polyethersulfone coating composition and a preparation method thereof. Background technique [0002] Paint, a very important role in human life, ranging from major equipment to small pots and pans, human life is inseparable from the use of paint. Coatings have been widely used in the market for their excellent protective and decorative functions. Coatings are mainly composed of film-forming substances, pigments and fillers, solvents and additives, the most important of which are film-forming substances. In recent years, with the development of industry, many polymer resins with excellent properties have appeared to replace the early natural substances as film-forming substances. Polyethersulfone resin is one of them. [0003] Polyethersulfone resin has the characteristics of high temperature resistance, creep resistance, corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D181/06C09D127/18C09D163/00C09D5/08C09D7/12B05D3/02B05D7/14
CPCB05D3/0254B05D7/14C08L2205/03C09D5/08C09D7/61C09D7/62C09D181/06C08L27/18C08L63/00C08K9/04C08K3/346C08K2003/2251C08K2003/2241C08K3/36C08K3/04
Inventor 关绍巍张博关尔佳杨润海祝世洋张银凤
Owner JILIN JITU GAOKE TECH CO LTD
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