水热预处理对毛白杨木材压缩层形成的影响

夏捷; 黄荣凤; 吕建雄; 张耀明; 赵有科

doi:10.19455/j.mcgy.2013.04.010

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水热预处理对毛白杨木材压缩层形成的影响
Effect of Hydro-Thermal Pretreatment on Compression Layer Formation during Densification of Chinese White Poplar
1. 中国林科院木材工业研究所
2. 国家林业局木材科学与技术重点实验室
2013年27卷第4期页码：42-45
DOI： 10.19455/j.mcgy.2013.04.010

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[1]夏捷,黄荣凤,吕建雄,张耀明,赵有科.水热预处理对毛白杨木材压缩层形成的影响[J].木材工业,2013,27(04):42-45.

XIA Jie, HUANG Rong-feng, LV Jian-xiong, et al. Effect of Hydro-Thermal Pretreatment on Compression Layer Formation during Densification of Chinese White Poplar[J]. China Wood Industry, 2013,27(4):42-45.
[1]夏捷,黄荣凤,吕建雄,张耀明,赵有科.水热预处理对毛白杨木材压缩层形成的影响[J].木材工业,2013,27(04):42-45. DOI： 10.19455/j.mcgy.2013.04.010.

XIA Jie, HUANG Rong-feng, LV Jian-xiong, et al. Effect of Hydro-Thermal Pretreatment on Compression Layer Formation during Densification of Chinese White Poplar[J]. China Wood Industry, 2013,27(4):42-45. DOI： 10.19455/j.mcgy.2013.04.010.

摘要

为高效利用木材资源,实现对压缩杨木压缩层的位置和厚度的有效控制,进行了先水热预处理,再压缩的研究,分析水热预处理时间对预处理材水分分布、压缩材的压缩层形成及性能的影响。结果表明,随着预热时间的增加,水分向预处理材芯层移动,压缩层的位置亦向芯层移动、压缩层厚度增加;与未处理素材相比,压缩材的抗弯性能明显增强。

Abstract

Hydro-thermal pretreatment was used to control the thickness and location of the compression layer of Chinese white poplar samples when they were hot-compressed.The results showed that with increasing pretreatment time,the depth and thickness of the compression layer were increased.Therefore,the modulus of rupture（MOR）and modulus of elasticity（MOE） of the samples were increased.