Natural weathering performance of three fast-growing Eucalypt woods
作者： Pedro Henrique Gonzalez de Cademartori , André Luiz Missio , Bruno Dufau Mattos , Darci Alberto Gatto
DOI: 10.4067/S0718-221X2015005000069
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摘要: We investigated the effect of outdoor exposure on wood surface from three fast-growing Brazilian eucalypts through color, wetting and thermal analyzes. Gympie messmate (Eucalyptus cloeziana), rose gum grandis) blue saligna) woods were exposed outdoors in a subtropical region for 360 days. performed collections every 120 color changes untreated weathered spectrophotometer (CIEL*a*b* system) macro compounds thermogravimetric analysis. In addition, apparent contact angle work adhesion evaluated using goniometer. Outdoor days provided significant increment grayish surface. Thermogravimetric curves changed after weathering, especially regions related to hemicelluloses lignin degradation. converted hydrophilic into very one, wherein occurrence microcracks contributed fully spreading water droplets.
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