UV-LED curing efficiency of wood coatings

Authors: Landry, VéronicBlanchet, PierreBoivin, GabrielleBouffard, Jean-FrançoisVlad-Cristea, Mirela Simona
Abstract: Ultraviolet light emitting diodes (UV-LEDs) have attracted great interest in recent years. They can be used to polymerize coatings, such as those used for prefinished wood flooring. In this project, two lamps were compared for their suitability to be used on a wood flooring finishing line: a UV-microwave and a UV-LED lamp. Low heat emission was found for the UV-LED lamp compared to the UV-microwave one. This study also reveals that the 4 W/cm2 UV-LED lamp used is not powerful enough to cure UV high solids acrylate coatings while satisfactory results can be obtained for UV water-based formulations. In fact, conversion percentages were found to be low for the high solids coatings, leaving the coatings tacky. Higher conversion percentages were obtained for the UV water-based formulations. As a result, mass loss, hardness, and scratch resistance found for the samples cured by UV-LED were closed to the ones found for the samples cured using the UV microwave lamp.
Document Type: Article de recherche
Issue Date: 18 December 2015
Open Access Date: 25 November 2016
Document version: VoR
Permalink: http://hdl.handle.net/20.500.11794/12490
This document was published in: Coatings, Vol. 5 (4), 1019–1033 (2015)
Alternative version: 10.3390/coatings5041019
Collection:Articles publiés dans des revues avec comité de lecture

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