UV-LED Curing Efficiency of Wood Coatings
Source abstract
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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Photopolymerization techniques and applications · Additive Manufacturing and 3D Printing Technologies · Nanofabrication and Lithography Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
FPInnovations, 319 rue Franquet, Québec City, QC G1P 4R4, Canada
NSERC Chair on Ecoresponsible Wood Construction, Laval University, 2425 de la Terrasse st, Québec City, QC G1V 0A6, Canada
References (13)
Show source-provided references
1. Coatings World. Available online: http://www.coatingsworld.com/contents/view_features/2008-04-04/radcure-coatings-market/.
2. Radtech the Association for UV/EB Technology. Available online: http://www.radtech.org/images/pdf_upload/UV-EBMarketTrends7.12.pdf.
3. (2014, January 12–14). The North American Market for UV/EB Technology. Proceedings of the Radtech UV/EB, Rosemont, IL, USA.
4. Ross, J.S. UV&EB in the Flooring Industry—Reducing Greenhouse Gas Emissions & HAPs. Available online: http://www.radtech.org/images/pdf_upload/UVandEBintheFlooringIndustry-ReducingGreenhouseGasandEmissionsandHAPS.pdf.
5. Modjewski, R.J. UV Curing for Wood Applications, Radtech Report, 1999. Available online: http://www.radtech.org/images/pdf_upload/uvcurewoodapp.pdf.
6. UV LED Curing Community. Available online: http://uvledcommunity.org/uploads/pdfs/Technote-UV-LED-print-guide-US_web.pdf.
7. Anderson, D. UV-LED Report Summary. Available online: http://cordis.europa.eu/result/rcn/144779_en.html.
8. Karsten, R.O. UV-LED Curing for Wood Coatings, Phoseon Technology p.7. Available online: http://www.phoseon.com/Documentation/uv led for wood coatings.pdf.
9. Kiyoi, E. Wood Coating with UV-Led Curing: A Focus on Heat, Available online: http://www.radtech.org/magazinearchives/Publications/RadTechReport/jun-2014/Wood%20Coating%20with%20UV-LED%20Curing-A%20Focus%20on%20Heat.pdf.
10. Sitzmann, E.V. (2015, January 10). Critical Photoinitiators for UV-LED Curing: Enabling 3D Printing, Inks and Coatings. Proceedings of the Radtech UV.EB West 2015, Redondo Beach, CA, USA.
11. Locuffier, J. (2011). Photoinitiators for UV-Led Curable Compositions and Inks. (WO2011069947 A1), Patent.
12. Progress in organic coatings
13. The investigation of photoinitiated polymerization of multifunctional acrylates with TX-BT by Photo-DSC and RT-FTIR10.1016/j.porgcoat.2010.10.010 ↗