Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of thermosetting powder coating for outdoor coating

A thermosetting powder and coating technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of reduced service life and discounted use effects, and achieve the effects of improved performance, strong adhesion, and high impact strength

Inactive Publication Date: 2018-06-15
SUZHOU JUKANG NEW MATERIAL TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although thermosetting powder coatings are widely used, in outdoor coating, the use effect is often greatly reduced due to the adverse influence of the external environment, and the service life is greatly reduced. This requires improvement of thermosetting powder coatings to adapt to various adverse conditions. Environmental influences, especially making it more suitable for outdoor painting

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of thermosetting powder coating for outdoor coating
  • Preparation method and application of thermosetting powder coating for outdoor coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) 40 parts of hydroxyl polyester resin, 8 parts of 1,2-propanediol, 3 parts of guanidine sulfamate, 2 parts of polyethylene glycol octylphenyl ether, 0.5 parts of tetrafluorowax, 3 parts of coloring material, two Add 1 part of aminodiphenyl sulfone and 1 part of benzoin to the planetary ball mill together, add zirconia grinding balls according to the ratio of ball to material ratio of 8:1, and then add ethylene glycol, the amount of ethylene glycol is the mass of the grinding balls 65% of the mixture was ball milled at a rate of 150 rpm for 4 hours, and after the ball milling was completed, it was placed in a drying oven at 120°C for 6 hours to obtain a dry mixed powder;

[0024] (2) Send the dry mixed powder obtained in step (1) into a twin-screw extruder, set the aspect ratio of the twin-screw extruder to 20:1, the speed to 350 rpm, and the temperature in the first zone to 90-100 ℃, the temperature in the second zone is 100~110℃, the temperature in the third zone is...

Embodiment 2

[0030] (1) 45 parts of hydroxyl polyester resin, 9 parts of 1,2-propanediol, 4 parts of guanidine sulfamate, 3 parts of polyethylene glycol octylphenyl ether, 1 part of tetrafluorowax, 4 parts of colorant, three 2 parts of boron fluoride complex and 2 parts of benzoin are jointly added to the planetary ball mill, zirconia grinding balls are added according to the ratio of ball to material ratio of 9:1, and then ethylene glycol is added. The amount of ethylene glycol is Grinding 70% of the ball mass, ball milling at a rate of 175 rpm for 5 hours, after the ball milling is completed, place it in a drying oven at 125°C for 7 hours to obtain a dry mixed powder;

[0031] (2) Send the dry mixed powder obtained in step (1) into a twin-screw extruder, set the aspect ratio of the twin-screw extruder to 20:1, the speed to 350 rpm, and the temperature in the first zone to 90-100 ℃, the temperature in the second zone is 100~110℃, the temperature in the third zone is 105~115℃, the temperat...

Embodiment 3

[0037](1) 50 parts of hydroxyl polyester resin, 10 parts of 1,2-propanediol, 5 parts of guanidine sulfamate, 4 parts of polyethylene glycol octylphenyl ether, 1.5 parts of tetrafluorowax, 5 parts of coloring material, two Add 3 parts of carboxylic acid dihydrazide and 3 parts of stearic acid into the planetary ball mill together, add zirconia grinding balls according to the ratio of ball to material ratio of 10:1, and then add ethylene glycol, the amount of ethylene glycol is grinding 75% of the mass of the ball was ball milled at a rate of 200 rpm for 6 hours, and after the ball milling was completed, it was placed in a drying oven at 130°C for 8 hours to obtain a dry mixed powder;

[0038] (2) Send the dry mixed powder obtained in step (1) into a twin-screw extruder, set the aspect ratio of the twin-screw extruder to 20:1, the speed to 350 rpm, and the temperature in the first zone to 90-100 ℃, the temperature in the second zone is 100~110℃, the temperature in the third zone...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method and application of a thermosetting powder coating for outdoor coating. The preparation method comprises the following steps: performing ball milling on a hydroxyl polyester resin, 1,2-propylene glycol, guanidine sulfamate, polyethylene glycol octylphenol ether, tetrafluoro-wax, a pigment, a curing agent and a degassing agent, drying a ball milling product, performing melting extrusion in a double-screw extruder so as to obtain a molten mixed material, further pressing the molten mixed material in a pressed film cooling machine so as to obtain thin pieces, crushing the thin pieces, powdering the crushed flaky material so as to obtain a half-finished product coating, finally putting the half-finished product coating into an ultrasonic dispersion machine, adding a leveling agent, performing ultrasonic dispersion, collecting a product, inspecting, and packaging, thereby obtaining a finished product thermosetting powder coating. The prepared thermosetting powder coating is high in impact strength and good in adhesion property and has good application prospects in outdoor coating.

Description

technical field [0001] The invention relates to the technical field of thermosetting powder processing, in particular to a method for preparing a thermosetting powder coating for outdoor painting and its application. Background technique [0002] Thermosetting powder coating is a new type of solvent-free solid powder coating. It has the characteristics of solvent-free, pollution-free, recyclable, environmentally friendly, energy and resource saving, labor-intensive reduction and high mechanical strength of the coating film. Thermosetting powder coating refers to the use of thermosetting resin as a film-forming substance, adding a curing agent for cross-linking reaction and heating to form an insoluble and infusible hard coating. At higher temperatures, the coating does not soften like thermoplastic coatings, but only decomposes. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the leveling ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D7/63C09D7/65C09D5/03
Inventor 张金龙田宝柱邢明阳王灵芝雷菊英
Owner SUZHOU JUKANG NEW MATERIAL TECH