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Propriedades físicas da madeira de teca termorretificada

Physical properties of heat-treated teak wood

Resumos

O objetivo deste estudo foi determinar o efeito de tratamentos termorretificadores nas propriedades físicas (densidade e teor de umidade) da madeira de teca (Tectona grandis L. f.), proveniente de plantios de diferentes espaçamentos. Amostras de madeira de cerne e alburno foram termorretificadas a 180ºC e 200ºC durante 2 horas e 30 minutos. A termorretificação afetou mais a densidade do cerne do que a densidade do alburno. As madeiras de cerne e alburno apresentaram uma redução média de 52% no teor de umidade de equilíbrio, após a termorretificação. O espaçamento entre árvores também afetou as propriedades físicas da madeira após a termorretificação.

densidade; teor de umidade; termorretificação; Tectona grandis


The objective of this study was to determine the effect of heat treatments on the physical properties (density and moisture content) of teak (Tectona grandis L. f.) wood from plantations of different spacings. Heartwood and sapwood samples were heat treated at 180 ºC and 200 ºC for 2 hours and 30 minutes. Heat treatment produced greater effect on heartwood density compared with sapwood density. Heartwood and sapwood presented an average reduction of 52% in equilibrium moisture content after heat treatment. Tree spacing also affected the physical properties of wood after heat treatment.

density; moisture content; heat treatment; Tectona grandis


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Datas de Publicação

  • Publicação nesta coleção
    24 Out 2014
  • Data do Fascículo
    Dez 2014

Histórico

  • Recebido
    23 Abr 2013
  • Aceito
    17 Jul 2014
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