Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica

Artículo científico

Main Authors: Moya-Roque, Róger, Vargas-Fonseca, Lupita, Salas-Garita, Cynthia
Format: Artículo
Language: Inglés
Published: Wood Material Science & Engineering 2018
Subjects:
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962649277&doi=10.1080%2f17480272.2014.949855&partnerID=40&md5=f83602ad0a94fbe2d08f55614c876423
https://hdl.handle.net/2238/9820
id RepoTEC9820
recordtype dspace
spelling RepoTEC98202022-04-09T03:05:34Z Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica Moya-Roque, Róger Vargas-Fonseca, Lupita Salas-Garita, Cynthia Calidad Madera Acabado Color Cambio Laboratorios Research Subject Categories::FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Product science::Wood fibre and forest products Artículo científico This study evaluated wood color change (ΔE*) and the surface quality in 10 tropical wood species painted with three finishes (composed of wax and polyurethane). Two weathering conditions were tested: natural weathering (NW) and artificial weathering (AW). The results showed that the application of these finishes, decreased the luminosity (L*), increased the redness (a*) and the yellowness (b*) parameters in all species. ΔE*, after weathering exposure, was affected significantly by L*, a*, and b, whereas for finished or pretreated wood, L* and b* are the main parameters affecting ΔE* in the 10 tropical species studied. ΔE* values found in different finishes and pretreatments are cataloged as total change of color. Other important results were that tropical light colored timber with natural pretreatment produced higher ΔE* than dark colored timber. The stains and fungal development were observed in polyurethane finishes in NW, but not in AW. The irregular and mosaic flaws were not observed in any kind of finish or pretreatment of surface. The values of the quality index created, which considered long and short lines and switch flaws, were lowest in NW and in waxy finish, while the highest value was obtained with the polyurethane finish. 2018-07-17T18:24:44Z 2018-07-17T18:24:44Z 2016 info:eu-repo/semantics/article https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962649277&doi=10.1080%2f17480272.2014.949855&partnerID=40&md5=f83602ad0a94fbe2d08f55614c876423 Moya-Roque, R., Salas, C., & Vargas-Fonseca, L. (2016). Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica, Wood Material Science & Engineering, 11(2), 62-78. 17480272 https://hdl.handle.net/2238/9820 eng 10.1080/17480272.2014.949855 application/pdf Wood Material Science & Engineering Wood Material Science & Engineering
institution Tecnológico de Costa Rica
collection Repositorio TEC
language Inglés
topic Calidad
Madera
Acabado
Color
Cambio
Laboratorios
Research Subject Categories::FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Product science::Wood fibre and forest products
spellingShingle Calidad
Madera
Acabado
Color
Cambio
Laboratorios
Research Subject Categories::FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Product science::Wood fibre and forest products
Moya-Roque, Róger
Vargas-Fonseca, Lupita
Salas-Garita, Cynthia
Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
description Artículo científico
format Artículo
author Moya-Roque, Róger
Vargas-Fonseca, Lupita
Salas-Garita, Cynthia
author_sort Moya-Roque, Róger
title Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
title_short Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
title_full Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
title_fullStr Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
title_full_unstemmed Optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in Costa Rica
title_sort optical performance of finished and unfinished tropical timbers exposed to ultraviolet light in the field in costa rica
publisher Wood Material Science & Engineering
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962649277&doi=10.1080%2f17480272.2014.949855&partnerID=40&md5=f83602ad0a94fbe2d08f55614c876423
https://hdl.handle.net/2238/9820
_version_ 1796139854124285952
score 11.94833