UV-LED Curing Efficiency of Wood Coatings

被引：21

作者：

Landry, Veronic ^{[1
]}

Blanchet, Pierre ^{[2
]}

Boivin, Gabrielle ^{[1
]}

Bouffard, Jean-Francois ^{[1
]}

Vlad, Mirela ^{[1
]}

机构：

[1] FPInnovations, 319 Rue Franquet, Quebec City, PQ G1P 4R4, Canada

[2] Univ Laval, NSERC Chair Ecoresponsible Wood Construct, 2425 Terrasse St, Quebec City, PQ G1V 0A6, Canada

来源：

COATINGS | 2015年 / 5卷 / 04期

关键词：

UV-LED; UV-curable coatings; wood flooring; acrylates; photoinitiators; mechanical resistance; conversion percentages;

D O I：

10.3390/coatings5041019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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/cm(2) 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.

引用

页码：1019 / 1033

页数：15

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