A REVIEW ON UV CURABLE EPOXY POWDER COATINGS

Session

Pharmaceutical and Natural Sciences

Description

The oldest method of preventing corrosion is to apply polymer coatings on metals and alloys. This method has been around since ancient times. Prior to addressing the passage of water and oxygen through the coating to permit corrosion of the substrate material, the barrier function of organic coatings was first discovered during the previous ten years. The common coatings that incorporate solvents before curing are liquid coatings based on epoxy. Because of its excellent qualities, powder organic coatings are a wonderful choice that can be used in a variety of applications and sectors. Additionally, because they don't contain solvents in their composition, they offer an environmental benefit over traditional liquid coatings. The usage of volatile organic compounds (VOCs) needs to be reduced urgently due to tighter environmental restrictions and rising consumer awareness of the need to safeguard the environment. As a result, they are rapidly being employed in a variety of applications, including household appliances, car interiors, and aeronautical parts. Epoxy-based resins offer superior tensile qualities compared to other organic powder coatings. They are extremely stiff and robust, which helps to provide superior wear resistance. There are several papers and research regarding powder coatings that aim to enhance their qualities. The compositions of powder coatings were extruded, crushed and screened to gain powder of coating. The powder always was stored at room temperature. The powder coatings often operated by two kinds which were electrostatic spraying method and fluidized bed dipping method. After that, the powder was heated to melt and cure. Finally, a smooth bright permanent film on articles was formed to achieve the purpose of decoration and corrosion. The future development trends of powder coatings are illustrated. UV-curable powder coatings present some new possibilities for the curing of heat sensitive substrates and offers more advantages compared to thermally cured powder coatings. UV-curing can be performed at lower temperatures than possible by thermally activated systems. The curing conditions used in UV curing technology and its advantages such as fast curing and high efficiency, low capital investment, solvent elimination, low cost and energy consumption were also presented.

Keywords:

Powder coatings, UV-curing, Epoxy resin, Coating process

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-95-6

Location

UBT Lipjan, Kosovo

Start Date

28-10-2023 8:00 AM

End Date

29-10-2023 6:00 PM

DOI

10.33107/ubt-ic.2023.108

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Oct 28th, 8:00 AM Oct 29th, 6:00 PM

A REVIEW ON UV CURABLE EPOXY POWDER COATINGS

UBT Lipjan, Kosovo

The oldest method of preventing corrosion is to apply polymer coatings on metals and alloys. This method has been around since ancient times. Prior to addressing the passage of water and oxygen through the coating to permit corrosion of the substrate material, the barrier function of organic coatings was first discovered during the previous ten years. The common coatings that incorporate solvents before curing are liquid coatings based on epoxy. Because of its excellent qualities, powder organic coatings are a wonderful choice that can be used in a variety of applications and sectors. Additionally, because they don't contain solvents in their composition, they offer an environmental benefit over traditional liquid coatings. The usage of volatile organic compounds (VOCs) needs to be reduced urgently due to tighter environmental restrictions and rising consumer awareness of the need to safeguard the environment. As a result, they are rapidly being employed in a variety of applications, including household appliances, car interiors, and aeronautical parts. Epoxy-based resins offer superior tensile qualities compared to other organic powder coatings. They are extremely stiff and robust, which helps to provide superior wear resistance. There are several papers and research regarding powder coatings that aim to enhance their qualities. The compositions of powder coatings were extruded, crushed and screened to gain powder of coating. The powder always was stored at room temperature. The powder coatings often operated by two kinds which were electrostatic spraying method and fluidized bed dipping method. After that, the powder was heated to melt and cure. Finally, a smooth bright permanent film on articles was formed to achieve the purpose of decoration and corrosion. The future development trends of powder coatings are illustrated. UV-curable powder coatings present some new possibilities for the curing of heat sensitive substrates and offers more advantages compared to thermally cured powder coatings. UV-curing can be performed at lower temperatures than possible by thermally activated systems. The curing conditions used in UV curing technology and its advantages such as fast curing and high efficiency, low capital investment, solvent elimination, low cost and energy consumption were also presented.