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Quick-curing powder coating and preparation method thereof

A powder coating, fast curing technology, applied in the direction of powder coating, polyester coating, coating, etc., can solve the problems of difficulty in taking into account the coating forming process, difficulty in adapting to performance requirements, and low environmental tolerance, so as to reduce the curing time, Strengthen the bonding effect and improve the strength effect

Active Publication Date: 2021-03-30
宁波爱甬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing coatings have a long curing time and are difficult to meet the current performance requirements. Therefore, research on the rapid curing of powder coatings has become a new direction for the development of coatings.
[0003] There are many studies on fast-curing coatings in the current technology, most of which take into account the environmental tolerance of coatings, but there is still room for improvement
For example, the patent number is CN201710971232.5, a method of using photothermal effect to realize rapid curing of powder coatings. By mixing and pulverizing photothermal conversion fillers and resins, the pulverized powder coatings are evenly placed on the substrate. The substrate used is Glass, aluminum sheet or steel plate; select the light source to irradiate the powder coating to reach a curing temperature of 60-330°C to cure the powder coating, but it is difficult to take into account the molding process of the coating during the curing, resulting in a decline in the performance of the coating after spraying; another example is the patent number CN201610993976 .2 a high-speed infrared curing leveling powder coating and preparation method thereof, the components of the powder coating include polyester resin, curing agent, leveling agent, benzoin, inorganic filler, wax powder and pigment, but it selects a single resin , under the premise of fast film formation, the environmental tolerance is not high

Method used

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  • Quick-curing powder coating and preparation method thereof

Examples

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Embodiment 1

[0032]A fast-curing powder coating, in parts by mass, the polyester mixture formula is: 30 parts of polyarylate, 40 parts of polybutylene terephthalate, 1 part of polyethylene micropowder wax, 0.5 parts of microcrystalline cellulose parts, 3 parts of polyvinyl acetate, 1 part of liquid silicone rubber, 55 parts of nano-silica aggregates, 30 parts of barium sulfate, and 5 parts of melamine formaldehyde resin; the formula of the amino resin mixture is: 50 parts of urea-formaldehyde resin, 10 parts of rubber, 0.1 part of rare earth oxide, 20 parts of dull calcium carbonate, 5 parts of polyacrylonitrile, 1 part of nano-titanium dioxide, 0.5 part of polyvinylidene fluoride resin; the mass ratio of the polyester compound and the amino resin compound 1:2; the nano-silica aggregate is made of the following components by mass: 1 part of nano-silica, 0.5 parts of vinyltrimethoxysilane, 20 parts of benzene, 18 parts of acrylic resin, superfine 1 part of hornblende, 0.5 part of superfine ...

Embodiment 2

[0049] A fast-curing powder coating, in parts by mass, the polyester mixture formula is: 50 parts of polyarylate, 70 parts of polybutylene terephthalate, 3 parts of polyethylene micropowder wax, 1 part of microcrystalline cellulose parts, 5 parts of polyvinyl acetate, 3 parts of liquid silicone rubber, 65 parts of nano-silica aggregates, 40 parts of barium sulfate, and 8 parts of melamine formaldehyde resin; the formula of the amino resin mixture is: 80 parts of urea-formaldehyde resin, 20 parts of rubber, 0.3 part of rare earth oxide, 30 parts of dull calcium carbonate, 8 parts of polyacrylonitrile, 3 parts of nano-titanium dioxide, 2 parts of polyvinylidene fluoride resin; the mass ratio of the polyester compound and the amino resin compound 3:5; the nano-silica aggregate is made of the following components by mass: 2 parts of nano-silica, 0.7 parts of vinyltrimethoxysilane, 25 parts of benzene, 22 parts of acrylic resin, superfine 1.5 parts of hornblende, 0.8 part of superf...

Embodiment 3

[0066] A fast-curing powder coating, in parts by mass, the polyester mixture formula is: 40 parts of polyarylate, 57 parts of polybutylene terephthalate, 2 parts of polyethylene micropowder wax, 0.9 parts of microcrystalline cellulose parts, 4 parts of polyvinyl acetate, 3 parts of liquid silicone rubber, 55 parts of nano-silica aggregates, 40 parts of barium sulfate, and 5 parts of melamine formaldehyde resin; the formula of the amino resin mixture is: 80 parts of urea-formaldehyde resin, 20 parts of rubber, 0.1 part of rare earth oxide, 30 parts of dull calcium carbonate, 5 parts of polyacrylonitrile, 3 parts of nano-titanium dioxide, 0.5 part of polyvinylidene fluoride resin; the mass ratio of the polyester compound and the amino resin compound 3:2; the nano-silica aggregate is made of the following components by mass: 2 parts of nano-silica, 0.5 parts of vinyltrimethoxysilane, 25 parts of benzene, 22 parts of acrylic resin, superfine 1 part of hornblende, 0.8 part of super...

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Abstract

The invention relates to the field of powder coatings, in particular to a quick-curing powder coating and a preparation method thereof, and the powder coating comprises a polyester mixture and an amino resin mixture; wherein the polyester mixture is prepared from polyarylester, polybutylene terephthalate, polyethylene micronized wax, microcrystalline cellulose, polyvinyl acetate, liquid silicone rubber, nano silicon dioxide aggregate, barium sulfate and melamino-formaldehyde resin; wherein the amino resin mixture is prepared from urea resin, isoprene rubber, rare earth oxide, extinction calcium carbonate, polyacrylonitrile, nano titanium dioxide and polyvinylidene fluoride resin. The coating has the advantages of high surface energy receiving efficiency, high curing speed, favorable mechanical strength and wide application range.

Description

technical field [0001] The invention relates to the field of powder coatings, in particular to a fast-curing powder coating and a preparation method thereof. Background technique [0002] Powder coating is a solid powder synthetic resin coating composed of solid resin and pigments, fillers and additives. Unlike ordinary solvent-based coatings and water-based coatings, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. There are generally two ways to cure powder coatings. The first is thermal curing, which uses high-infrared or thermal convection techniques to heat, melt and solidify powder coatings. This method has a high curing temperature and is not suitable for media that require low temperature curing. The second is ultraviolet light curing. After adding a photoinitiator, the free radicals or anions and cations generated by ultraviolet light are used to cure the p...

Claims

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Application Information

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IPC IPC(8): C09D161/24C09D167/02C09D167/00C09D109/00C09D5/03C09D7/62C09D7/65
CPCC09D161/24C09D167/02C09D5/033C08K2201/011C08K2003/3045C08K2003/221C08K2003/2241C08K2003/2213C08L2205/02C08L2205/035C08K2201/014C08L9/00C08L33/20C08L27/16C08L67/02C08L67/00C08L23/06C08L1/04C08L31/04C08L83/04C08L61/28C08K13/06C08K9/06C08K9/08C08K3/36C08K3/30C08K3/22C08K3/26C08K3/34C08L61/24Y02P20/10
Inventor 夏行
Owner 宁波爱甬新材料科技有限公司
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