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A kind of weather-resistant powder coating and preparation method thereof

A powder coating and weather-resistant technology, applied in the chemical field, can solve the problems of poor free flow of powder coating, no specific solution proposed, poor operability, etc., to achieve improved cross-linking performance, excellent corrosion resistance, Prepare simple effects

Active Publication Date: 2021-08-17
佛山市艾瑞博装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, by reducing the particle size to 20 μm or less, the yield decreases, and when the particles are in the order of 20 μm or less, they are likely to aggregate so that the free-flowing property of the powder coating deteriorates, thus causing problems such as handling issues like sexual inadequacy
[0006] In summary, in the field of chemical powder coating preparation, there are still many practical problems that need to be dealt with in its practical application, and no specific solutions have been proposed.

Method used

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  • A kind of weather-resistant powder coating and preparation method thereof
  • A kind of weather-resistant powder coating and preparation method thereof
  • A kind of weather-resistant powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of weather-resistant powder coating, it is used in the surface treatment of metal surface, comprises component A, component B, component C and component D; Wherein,

[0034] Component A contains at least two weather-resistant fillers with different average particle sizes;

[0035] Component B is a solid resin containing one or more epoxy groups;

[0036] Component C is a powder coating composition containing a curing agent;

[0037] Component D is a polycarboxy polymer containing at least one texturing agent.

[0038] Wherein, specifically, the different average particle diameters in the component A range from 1.0 to 40 μm, and the average particle diameter refers to 50% of the volume-based frequency integral value in the particle size distribution measured by the laser diffraction / scattering method particle size.

[0039] The weather-resistant filler in the component A is barium sulfate and nano-titanium dioxide; and the weather-resistant filler improves the ...

Embodiment 2

[0051] A kind of weather-resistant powder coating, it is used in the surface treatment of metal surface, comprises component A, component B, component C and component D; Wherein,

[0052] Component A contains at least two weather-resistant fillers with different average particle sizes;

[0053] Component B is a solid resin containing one or more epoxy groups;

[0054] Component C is a powder coating composition containing a curing agent;

[0055] Component D is a polycarboxy polymer containing at least one texturing agent.

[0056] Wherein, the different average particle sizes in the component A range from 10 to 30 μm, and the average particle size refers to the particle size of 50% of the volume-based frequency integral value in the particle size distribution measured by laser diffraction / scattering method.

[0057] The weather-resistant filler in the component A is a mixture of zinc oxide, silicon dioxide and nano-cerium oxide; and the weather-resistant filler improves the...

Embodiment 3

[0069] A kind of weather-resistant powder coating, it is used in the surface treatment of metal surface, comprises component A, component B, component C and component D; Wherein,

[0070] Component A contains at least two weather-resistant fillers with different average particle sizes;

[0071] Component B is a solid resin containing one or more epoxy groups;

[0072] Component C is a powder coating composition containing a curing agent;

[0073] Component D is a polycarboxy polymer containing at least one texturing agent.

[0074] Wherein, the different average particle diameters in the component A range from 20 to 25 μm, and the average particle diameter refers to the particle diameter of 50% of the volume-based frequency integral value in the particle size distribution measured by laser diffraction / scattering method.

[0075] The weather-resistant filler in the component A is barium sulfate, nano-titanium dioxide, and zinc oxide mixed in a ratio of 2:2:5; and the weather-...

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Abstract

The invention provides a weather-resistant powder coating and a preparation method thereof, comprising component A, component B, component C and component D; wherein, component A contains at least two kinds of weather-resistant fillers with different average particle sizes; Component B is a solid resin containing one or more epoxy groups; Component C is a composition for powder coatings containing a curing agent; Component D is a polycarboxy polymer containing at least one texture agent. The powder coating of the present invention has a synergistic effect by adding weather-resistant fillers with different average particle size ranges, combined with solid resins of epoxy groups and polycarboxy polymers, so that the powder coating has good weather resistance and excellent Anti-corrosion performance; combined with component C, it can improve the cross-linking performance of the powder coating during the preparation process, and then promote the stability and adhesion of the coating film. Combined with the preparation method, it can meet the needs of outdoor powder coatings with high weather resistance The required powder coating, and the preparation is simple.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a weather-resistant powder coating and a preparation method thereof. Background technique [0002] Metal profiles are widely used in the construction industry due to their excellent durability, decoration and formability. Because of its good processing performance and light weight, aluminum profiles account for more than 80% of the amount of metal profiles, so the application of powder coatings in aluminum profiles has grown rapidly. After spraying powder on the surface of the aluminum profile, it plays a very good protective performance and decorative performance. Powder coating has the characteristics of solvent-free, non-environmental pollution, powder recovery and high utilization rate, and has been widely used. Powder coatings can be divided into two categories: thermoplastic and thermosetting. Thermoplastic powder coatings use thermoplastic resin as a film-forming substance. Its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D163/00C09D5/03C09D5/08C09D7/61C09D7/62C09D7/65
CPCC08K2003/2213C08K2003/2241C08K2003/2272C08K2003/2296C08K2003/3045C08K2201/003C08K2201/011C08L2205/035C09D5/032C09D5/033C09D5/08C09D163/00C09D167/00C09D7/69C08L63/00C08L101/08C08L75/04C08K13/06C08K9/04C08K9/06C08K3/30C08K3/22C08K3/36C08L67/00
Inventor 艾庆林
Owner 佛山市艾瑞博装饰材料有限公司