Physical and mechanical properties of thermally modified short-rotation wood in a closed system

IF 1.3 Q2 MATERIALS SCIENCE, PAPER & WOOD International Wood Products Journal Pub Date : 2023-04-03 DOI:10.1080/20426445.2023.2228554
T. M. Brito, Jessica Sabrina Silva Ferreira, Glaucileide Ferreira, João Gabriel Missia da Silva, A. Mendonça, Humberto Fantuzzi Neto, J. Paes, D. C. Batista
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Abstract

ABSTRACT This work aimed to evaluate the effect of a closed system thermal modification process on some physical and mechanical properties of eucalypt and teak short-rotation wood. We assessed untreated eucalypt and teak (EW and TW) and thermally modified eucalypt and teak wood (TMEW and TMTW). The process was carried out at 160°C for 45 min, and we performed some physical and mechanical tests. Thermal modification reduced the mechanical resistance and hygroscopicity and increased the dimensional stability of wood. The normal density (ρ 12) of TMTW was reduced, but no significant effect was verified for TMEW, although it had an absolute reduction of 7%. For both conditions (untreated and thermally modified), teak was more resistant to failure (higher MOR in static bending), and no difference between the species was verified for MOE. Eucalypt wood was more resistant to compression parallel to the grain in both conditions.
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封闭系统中热改性短旋木材的物理力学性能
摘要本工作旨在评估封闭系统热改性工艺对桉树和柚木短轮伐木材某些物理力学性能的影响。我们评估了未经处理的桉树和柚木(EW和TW)以及热改性的桉树和枫木(TMEW和TMTW)。该过程在160°C下进行45 min,我们进行了一些物理和机械测试。热改性降低了木材的机械阻力和吸湿性,提高了木材的尺寸稳定性。TMTW的正常密度(ρ12)降低,但TMEW没有显著影响,尽管它的绝对降低了7%。对于这两种条件(未处理和热改性),柚木更耐破坏(静态弯曲的MOR更高),并且在MOE方面没有验证物种之间的差异。在这两种条件下,桉树木材都更耐平行于纹理的压缩。
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来源期刊
International Wood Products Journal
International Wood Products Journal MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
2.40
自引率
0.00%
发文量
27
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