在氨溶液中增塑的致密化榉木和泡桐木的选定性能

Selected Properties of Densified Hornbeam and Paulownia Wood Plasticised in Ammonia Solution.

作者信息

Mania Przemysław, Hartlieb Karol, Mruk Grzegorz, Roszyk Edward

机构信息

Department of Wood Science and Thermal Techniques, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-627 Poznań, Poland.

出版信息

Materials (Basel). 2022 Jul 18;15(14):4984. doi: 10.3390/ma15144984.

DOI:10.3390/ma15144984

PMID:35888451

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9324522/

Abstract

The aim of the study was to densify samples of Paulownia Clone wood in vitro 112 and hornbeam ( L.) by compression in the radial direction. Before the specimens were densified, they were subjected to plastic treatment in an ammonia solution. After densification, the compressive strength in the radial direction and the determination of the Brinell hardness in all three anatomical directions of the wood were determined. The wood swelling in humid air (98% RH) and liquid water was also determined. Paulownia wood density increased by about 280% and hornbeam wood density by 40%. The Brinell hardness parallel to the fibres increased by 49 and 390%, perpendicular by 80 and 388% for hornbeam and Paulownia, respectively. A significant increase in the compressive strength of wood in the radial direction was also observed. Densified hornbeam wood exposed to water showed a high swelling value of 153, while Paulownia wood exhibited 107%.

摘要

该研究的目的是通过径向压缩对泡桐无性系木材样本和欧洲鹅耳枥木材进行体外致密化处理。在对试样进行致密化处理之前，先将它们置于氨溶液中进行塑性处理。致密化处理后，测定了木材径向的抗压强度以及木材三个解剖方向的布氏硬度。还测定了木材在潮湿空气（相对湿度98%）和液态水中的膨胀情况。泡桐木材密度增加了约280%，欧洲鹅耳枥木材密度增加了40%。欧洲鹅耳枥木材平行于纤维方向的布氏硬度分别增加了49%和390%，垂直方向分别增加了80%和388%；泡桐木材平行于纤维方向的布氏硬度分别增加了49%和390%，垂直方向分别增加了80%和388%。在木材的径向抗压强度方面也观察到显著增加。暴露于水中的致密化欧洲鹅耳枥木材显示出153的高膨胀值，而泡桐木材的膨胀值为107%。