A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Powder coatings benefits
UV powder coating is ideal for coating heat sensitive objects, such as MDF (medium density fibreboard). A UV powder coating only needs sufficient heat to melt the powder and enable flow to take place. UV light is then used to cure the coating. This paper looks at ways in which the UV powder coating process can be optimised. The effectiveness of TiO2 in a UV powder coating has been compared to that of an epoxy/polyester powder coating and a traditional solvent-based industrial paint system from an optical performance and cost perspective.The formulation is based on the unsaturated polyester resin, UCB Uvecoat 10003. UV photoinitiators are needed in the formulation, but their effectiveness can be reduced by the presence of TiO2. In summary for optical performance the traditional alkyd/MF paint has an advantage over the two powder coatings systems. However from an environmental standpoint would be preferred to the solvent containing alkyd/MF paint. The epoxy/polyester coating is from a raw material cost perspective, substantially cheaper than the UV powder coating. However, when giving consideration to the full coating process coats, the UV powder coating will be more advantageous for time and energy. Another major benefit is that the UV powder coating can be used with heat sensitive substrates, like plastics and wood that are distorted at the higher temperatures required for cure in thermosetting systems.
Powder coatings benefits
UV powder coating is ideal for coating heat sensitive objects, such as MDF (medium density fibreboard). A UV powder coating only needs sufficient heat to melt the powder and enable flow to take place. UV light is then used to cure the coating. This paper looks at ways in which the UV powder coating process can be optimised. The effectiveness of TiO2 in a UV powder coating has been compared to that of an epoxy/polyester powder coating and a traditional solvent-based industrial paint system from an optical performance and cost perspective.The formulation is based on the unsaturated polyester resin, UCB Uvecoat 10003. UV photoinitiators are needed in the formulation, but their effectiveness can be reduced by the presence of TiO2. In summary for optical performance the traditional alkyd/MF paint has an advantage over the two powder coatings systems. However from an environmental standpoint would be preferred to the solvent containing alkyd/MF paint. The epoxy/polyester coating is from a raw material cost perspective, substantially cheaper than the UV powder coating. However, when giving consideration to the full coating process coats, the UV powder coating will be more advantageous for time and energy. Another major benefit is that the UV powder coating can be used with heat sensitive substrates, like plastics and wood that are distorted at the higher temperatures required for cure in thermosetting systems.
Powder coatings benefits
Die Vorteile des Pulverbeschichtens
Reck, Elizabeth (author) / Seymour, Steve (author)
PPCJ Polymers Paint Colour Journal ; 194 ; 12-16
2004
3 Seiten, 7 Bilder
Article (Journal)
English
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