Powder coating: How to improve the weather resistance?

2023.01.20

Powder coating, which composed of resin, color fillers and various additives with air as dispersion medium.Its solid content approaches 100%, there is no organic solvents. So its a eco-friendly type coating.

 

²What are the advantages of powder coating in industry?

üSafe and Eco-friendly. Its harmless for operators health.

üDuring the spraying process, the spilled powder coating can be recycled. So its utilization rate is very high, reaches more than 95%.

üOne time coating thickness of powder coating can be up to 0.05-0.5mm, which is much thicker than solvent-based coating.

üPowder coating has better physical and mechanical properties and chemical corrosion resistance than solvent-based coating.

 

²Do you know the main types of powder coatings?

A.Epoxy powder coating

It has excellent adhesion to metals, corrosion resistance, hardness and flexibility. Therefore, it is the first type of thermosetting powder coating to achieve commercialization.

B.Polyester powder coating

It is hard to yellow in the baking process, and has high gloss, good leveling. So its generally used in refrigerators, washing machines, bicycles, furniture and other fields.

C.Polyvinyl chloride powder coating

It has excellent solvent resistance and salt spray resistance. At present, it is mainly used for coating metal mesh, steel furniture, chemical equipment and so on.

D.Nylon powder coating

Non-toxic, tasteless, and its hard to be eroded by bacteria and mold. So it is especially suitable for spraying parts of the food industry, such as drinking water pipes and food packaging.

²Main applications of powder coating

üDecorative protective coating: such as household appliances, metal furniture, cars, instruments, bicycles, electrical equipment and building hardware.

üInsulation and moisture-proof coating: automotive parts, electrical appliances, electronic components and others.

üAnti-corrosion coating, like chemical tank, oil pipeline, construction pipeline, etc..

 

Obviously, the application of most powder coatings is very strict, which puts forward higher requirements for the quality. For example, architectural profiles, mainly aluminum alloy profiles, its surface powder coating is usually required to have better weather resistance and durability.

 

Below OMNISTAB Additives could help you further improve the weather resistance of powder coating:


Perfect synergistic effect will be obtained when you choose the combination of UV absorber, HALS and Antioxidant. Thus weather resistance of coating will be further improved, so that the aesthetic and decoration can be well maintained!

 

If you are interested in above additives, welcome to contact our sales staff. Sincerely looking forward to your inquiry!

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