水・メタノール・エタノールによる膨潤木材の乾燥過程および乾燥後におけるクリープ挙動と微細構造
水・メタノール・エタノールによる膨潤木材の乾燥過程および乾燥後におけるクリープ挙動と微細構造
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水、甲醇和乙醇溶胀木材干燥期间和干燥后的蠕变行为和微观结构
DOI：
10.2472/jsms.61.329
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
優 石丸
中科院分区：
文献类型：
--
作者：
圭輔 神代;俊輔 柳井;丈史 中谷;裕三 古田;優 石丸
为探讨木材微观结构与木材物理力学性质的关系，研究了水、甲醇、乙醇膨化木材干燥过程中和干燥后的蠕变行为以及干燥后的微观结构。获得的结果如下。1)每种膨化木材在干燥过程中的蠕变均大于干燥后即刻的蠕变，且远大于调质前后的蠕变。在干燥过程中和干燥后立即蠕变程度较大的木材样品是：当含量相同时，甲醇膨胀木材、乙醇膨胀木材和水膨胀木材。2)尽管干燥速度较快，但在干燥过程中蠕变程度相似。干燥后立即蠕变的程度取决于干燥速度和干燥后经过的时间。3)在110℃真空干燥条件下，甲醇和乙醇解吸后木材中的微孔数量比水分解吸后的木材中的多。4)液体混合物(水：甲醇=0.2：0.8，水：乙醇=0.8：0.2)的干燥过程中的蠕变是水膨胀木材的1.5倍。因此，认为木材在干燥过程中和干燥后不同的膨胀状态会产生不同的木材微观结构。
To investigate the relationship between microstructures of wood and the physical and mechanical properties, creep behaviors during and after drying and microstructures after drying of wood swollen by water, methanol and ethanol were studied in this report. Results obtained were as follows. 1) Creeps for every swollen wood during drying were greater than immediately after drying, and much greater than after conditioned at the before and after contents. Wood samples with greater degree of creep during and immediately after drying were; methanol-swollen wood, ethanol-swollen wood and water-swollen wood when similar amount of content were changed. 2) Similar degree of creep occurred during drying despite drying rate. Degree of creep immediately after drying depended on drying rate and elapsed time after drying. 3) Larger amount of micropores existed in wood after desorption of methanol and ethanol than in wood after desorption of water when vacuum-dried at 110°C. 4) One and a half times as much as greater creep occurred during drying for liquid mixtures (water : methanol = 0.2 : 0.8, water : ethanol = 0.8 : 0.2) swollen wood than for water-swollen wood. Accordingly, it was considered that different swollen states of wood produced different wood microstructures during and after drying.
木材的蠕变因含水量的变化而不稳定。
DOI：
--
发表时间：
2005
期刊：
Holzforschung 59
影响因子：
--
作者：
Chika Takahashi;Yutaka Ishimaru;Ikuho Iida;Yuzo Furuta
通讯作者：
Yuzo Furuta