F. Fodor, Lukas Emmerich, Norbert Horváth, Róbert Németh, Tamás Hofmann
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引用次数: 0
摘要
天堂树(Ailanthus altissima (Mill.) Swingle)的应用因其耐久性和尺寸稳定性差而受到限制。尽管它的物理和机械性能有望与白蜡木(Fraxinus excelsior L.)相媲美,但它被视为入侵物种,在木材性能增强研究中受到的关注有限。本研究对天堂木进行了 180 °C 和 200 °C 的热处理,利用动态蒸汽吸附测试研究其吸附特性。结果表明,在相对湿度为 95% 和温度为 25 °C 的条件下,经过 180 °C 的热处理后,平衡含水率降低了 13%;经过 200 °C 的热处理后,平衡含水率降低了 25%。提高处理温度可将含水率降至 0.76,并将调节时间缩短 10%。在相对湿度为 70% 时,滞后性最高,从 3.39% 到 3.88%。
Studying the Impact of Heat Treatments and Distance from Pith on the Sorption Behavior of Tree of Heaven Wood (Ailanthus altissima (Mill.) Swingle)
The application of tree of heaven (Ailanthus altissima (Mill.) Swingle) is constrained by its poor durability and dimensional stability. Despite exhibiting promising physical and mechanical properties comparable to ash wood (Fraxinus excelsior L.), it is regarded as an invasive species and receives limited attention in wood property enhancement research. This study subjected tree of heaven to heat treatment at 180 °C and 200 °C to investigate its sorption characteristics using dynamic vapor sorption tests. The results revealed a 13% reduction in equilibrium moisture content at 95% relative humidity and 25 °C after thermal modification at 180 °C and a 25% reduction after thermal modification at 200 °C. Increasing the treatment temperature lowered the moisture content ratio to 0.76 and shortened the conditioning time by up to 10%. The highest hysteresis, ranging from 3.39% to 3.88%, was observed at 70% relative humidity.