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A kind of powder coating and preparation method thereof

A powder coating and anti-graffiti technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of anti-graffiti effect and low weather resistance, achieve good chemical resistance, and improve water and oil repellency. Effect

Active Publication Date: 2020-12-04
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above documents only rely on the matrix resin to show the washing resistance and anti-graffiti of the coating, and the anti-graffiti effect and weather resistance are low

Method used

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  • A kind of powder coating and preparation method thereof
  • A kind of powder coating and preparation method thereof
  • A kind of powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0075] Embodiment 1-6 provides a kind of powder coating respectively, and concrete preparation method is as follows:

[0076] (1) Mix thermosetting fluorocarbon resin FEVE, perfluoropolyether modified acrylic resin and blocked polyisocyanate, add to twin-screw extruder, melt and extrude at 100°C, then press into tablets, cool and crush to granules The diameter is 20-80 μm, sieved and passed through a 180 mesh screen to obtain the first mixed material;

[0077] (2) Mix carboxyl polyester resin, TGIC, β-hydroxyalkylamide, titanium dioxide (average particle size 800nm), curing accelerator diphenyl imidazoline, leveling agent, benzoin, nano fumed alumina and pigments, Put it into a twin-screw extruder, melt and extrude at 100°C, then tablet, cool, pulverize to a particle size of 20-80 μm, sieve and pass through a 180-mesh screen to obtain the second mixed material;

[0078] (3) Mixing the first mixed material and the second mixed material to obtain a powder coating.

Embodiment 7-9

[0109] Embodiment 7-9 provides a kind of powder coating respectively, and concrete preparation method is as follows:

[0110] (1) Mix thermosetting fluorocarbon resin FEVE, perfluoropolyether modified acrylic resin and blocked polyisocyanate, add to twin-screw extruder, melt and extrude at 100°C, then press into tablets, cool and crush to granules The diameter is 20-80 μm, sieved and passed through a 180 mesh screen to obtain the first mixed material;

[0111] (2) Mix carboxyl polyester resin, epoxy resin, epoxy acrylate resin, titanium dioxide (average particle size 800nm), curing accelerator diphenyl imidazoline, leveling agent, benzoin, nano fumed alumina and pigment , added to a twin-screw extruder, melted and extruded at 100°C, then tableted, cooled, crushed to a particle size of 20-80 μm, sieved and passed through a 180-mesh screen to obtain the second mixed material;

[0112] (3) Mixing the first mixed material and the second mixed material to obtain a powder coating. ...

Embodiment 10-12

[0128] Embodiment 10-12 provides a kind of powder coating respectively, and concrete preparation method is as follows:

[0129] (1) Mix thermosetting fluorocarbon resin FEVE, perfluoropolyether modified acrylic resin and blocked polyisocyanate A, add to twin-screw extruder, melt and extrude at 100°C, then tablet, cool and pulverize to The particle size is 20-80 μm, sieved and passed through a 180 mesh screen to obtain the first mixed material;

[0130] (2) Mix hydroxyl polyester resin, blocked polyisocyanate B, amino resin, barium sulfate (average particle size 5 μm), curing accelerator diphenyl imidazoline, leveling agent, benzoin, nano fumed alumina and pigment, Put it into a twin-screw extruder, melt and extrude at 100°C, then tablet, cool, pulverize to a particle size of 20-80 μm, sieve and pass through a 180-mesh screen to obtain the second mixed material;

[0131] (3) Mixing the first mixed material and the second mixed material to obtain a powder coating.

[0132] It ...

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Abstract

The invention provides a powder paint and a preparation method thereof. The powder paint is composed of, by weight, 40-60 parts of matrix resin, 3-60 parts of a multi-component curing agent, 10-30 parts of a filler, 0.5-2 parts of a curing accelerator, 1-20 parts of thermosetting fluorocarbon resin, 0.1-10 parts of a thermosetting fluorocarbon resin curing agent and 0.01-0.5 part of an auxiliary agent; the matrix resin is carboxyl polyester resin or hydroxyl polyester resin or epoxy resin or hydroxyl acrylate resin or epoxy acrylate resin; the multi-component curing agent comprises at least two kinds of curing components which are different in curing velocity or compatibility for the matrix resin. The surface of a coating formed by the powder paint is flat and has no pinholes or sinkholes,and the powder paint has high adhesive force, hydrophobicity and oleophobicity, and good anti-doodling and anti-affixing effects.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of solvent-free solid powder coating, which is composed of resin, curing agent, filler, pigment, additives, etc. It has the characteristics of no solvent, no pollution, environmental protection, energy saving, etc., adding functional monomers Or fillers can realize the functional application of powder coatings. [0003] In outdoor building materials, public facilities and other occasions, the coating surface not only needs a certain weather resistance, but also needs a certain degree of hydrophobicity, oil repellency and self-cleaning performance. In this field, the surface micro-nano structure of the coating or the addition of low surface energy substances are usually used to achieve the hydrophobic, oil-repellent and easy-to-clean effect of the coating. B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D163/00C09D163/10C09D133/04C09D5/03C09D7/61C09D7/63
CPCC08K2003/2227C08K2003/2241C08K2003/3045C08K2201/011C08L2205/03C08L2205/035C09D5/033C09D163/00C09D163/10C09D167/00C08L27/12C08K13/02C08K5/20C08K3/22C08L63/00C08L63/10C08L61/20C08K3/30C08L67/00C08L33/04C08L61/06C08K5/092
Inventor 陈运法王好盛张婧坤薛杨张冬海
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI