Zinc-plated substrate powder coating and preparation method thereof

A powder coating and base material technology, which is applied in the field of galvanized base material powder coating and preparation, can solve the problems of poor coating surface smoothness, poor powder coating adhesion, and affecting the service life of the coating, so as to improve adhesion, Effect of improving anti-rust ability and improving friction coefficient

Pending Publication Date: 2018-07-20
HUZHOU JIACHENG POWDER COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively smooth surface of the galvanized substrate, the adhesion of the powder coating is poor during the spraying process, which may easily cause the coating to fall off and affect the service life of the coating.
At the same time, the smoothness of the coating surface formed by the existing paint spraying is relatively poor, which affects the quality of the coating
Therefore, the prior art has the problems of poor powder coating adhesion and unsatisfactory quality of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1. A powder coating for galvanized substrates, the powder coating is composed of the following raw materials in parts by mass:

[0029] Epoxy resin, 55-65 parts; phenolic curing agent, 10-14 parts; titanium dioxide, 15-17 parts; carbon black, 0.06-0.10 parts; pigment green, 0.01-0.02 parts; iron yellow, 0.5-0.6 parts ; Leveling agent, 0.8-1.0 parts; Defoamer, 0.2-0.4 parts; Catalyst, 0.2-0.3 parts; Filler, 8-16 parts;

[0030] The leveling agent is composed of the following raw materials by mass: isooctyl methacrylate, 30.2-35.5 parts; hydroxypropyl acrylate, 21.2-29.5 parts; hydroxypropyl methacrylate, 18.8-25.1 parts; toluene solvent , 10-15 parts; silica microspheres, 8-10 parts; benzoyl peroxide, 0.2-0.4 parts; nano metal oxides, 0.6-1.2 parts;

[0031] The epoxy resin contains dysprosium metal oxide, and the mass ratio between the dysprosium metal oxide and the epoxy resin is 2:100-5:100.

[0032] The nano-metal oxides include nano-titanium oxides, nano-...

Embodiment 2

[0049] Embodiment 2, a kind of galvanized substrate powder coating, described powder coating is made up of the raw material of following mass parts:

[0050] Epoxy resin, 55 parts; phenolic curing agent, 10 parts; titanium dioxide, 15 parts; carbon black, 0.06 parts; pigment green, 0.01 parts; iron yellow, 0.5 parts; leveling agent, 0.8 parts; defoamer, 0.2 parts; Catalyst, 0.2 parts; Filler, 8 parts;

[0051] The leveling agent is composed of the following raw materials in parts by mass: isooctyl methacrylate, 30.2 parts; hydroxypropyl acrylate, 21.2 parts; hydroxypropyl methacrylate, 18.8 parts; toluene solvent, 10 parts; Silicon microspheres, 8 parts; Benzoyl peroxide, 0.2 parts; Nano metal oxides, 0.6 parts;

[0052] The epoxy resin contains dysprosium metal oxide, and the mass ratio between the dysprosium metal oxide and the epoxy resin is 2:100.

[0053] The nano-metal oxides include nano-titanium oxides, nano-platinum oxides and nano-beryllium oxides, and the mass rat...

Embodiment 3

[0056] Embodiment 3, a galvanized substrate powder coating, is characterized in that, described powder coating is made up of the raw material of following mass parts:

[0057] Epoxy resin, 60 parts; Phenolic curing agent, 12 parts; Titanium dioxide, 16 parts; Carbon black, 0.08 parts; Pigment green, 0.015 parts; Iron yellow, 0.55 parts; Leveling agent, 0.9 parts; Defoamer, 0.3 parts; Catalyst, 0.25 parts; Filler, 12 parts;

[0058] The leveling agent is composed of the following raw materials in parts by mass: isooctyl methacrylate, 33 parts; hydroxypropyl acrylate, 25.5 parts; hydroxypropyl methacrylate, 21 parts; toluene solvent, 13 parts; Silicon microspheres, 9 parts; Benzoyl peroxide, 0.3 parts; Nano metal oxides, 0.8 parts;

[0059] The epoxy resin contains dysprosium metal oxide, and the mass ratio between the dysprosium metal oxide and the epoxy resin is 3:100.

[0060] The nano-metal oxide includes nano-titanium oxide, nano-platinum oxide and nano-beryllium oxide, a...

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Abstract

The invention discloses a zinc-plated substrate powder coating and a preparation method thereof. The powder coating comprises, by mass, 55-65 parts of epoxy resin, 10-14 parts of a phenolic curing agent, 15-17 parts of titanium dioxide, 0.06-0.10 part of carbon black, 0.01-0.02 part of pigment green, 0.5-0.6 part of iron oxide yellow, 0.8-1.0 part of a leveling agent, 0.2-0.4 part of a defoamer, 0.2-0.3 part of a catalyst and 8-16 parts of a filler. The preparation method comprises the following steps: mixing all raw materials in proportion to obtain a coating mixture; conveying the coating mixture into a twin-screw extruder, and extruding the mixture to obtain a coating liquid; cooling the coating liquid, and tabletting the cooled coating liquid to obtain a coating tablet; and crushing and screening the coating tablet to obtain the powder coating product. The adhesion of the powder coating is improved, and the quality of a coating layer formed by the coating is improved.

Description

technical field [0001] The invention relates to a powder coating, in particular to a galvanized substrate powder coating and a preparation method. Background technique [0002] There are many galvanized substrates that are used outdoors, and it is usually necessary to spray a layer of powder coating on the outer surface of the galvanized substrate to protect the galvanized substrate. However, due to the relatively smooth surface of the galvanized substrate, the adhesion of the powder coating is poor during the spraying process, which may easily cause the coating to fall off and affect the service life of the coating. At the same time, the smoothness of the surface of the coating formed by spraying the existing paint is relatively poor, which affects the quality of the coating. Therefore, the prior art has the problems of poor powder coating adhesion and unsatisfactory coating quality. Contents of the invention [0003] The purpose of the present invention is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/03C09D7/61C09D7/63C09D7/47C08F220/18C08F220/20C08G59/62B05D1/06
CPCC09D163/00C08F220/18C08G59/621C09D5/033B05D1/06C08K2201/011C08K2201/014C08K2003/221C08K2003/2241C08F220/1808C08L33/066C08K13/04C08K3/22C08K7/18C08K3/04C08F220/20
Inventor 凌秀军李鸿斌周鹏周国旗张金良
Owner HUZHOU JIACHENG POWDER COATINGS CO LTD
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