水热控制下杨木的表层密实化及固定技术

王艳伟; 黄荣凤; 张耀明

doi:10.19455/j.mcgy.2012.02.005

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水热控制下杨木的表层密实化及固定技术
Surface Densification and Heat Fixation of Chinese White Poplar by Hydro-Thermal Control
1. 中国林科院木材工业研究所国家林业局木材科学与技术重点实验室
2012年26卷第2期页码：18-21
DOI： 10.19455/j.mcgy.2012.02.005

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[1]王艳伟,黄荣凤,张耀明.水热控制下杨木的表层密实化及固定技术[J].木材工业,2012,26(02):18-21.

WANG Yan-wei, HUANG Rong-feng, ZHANG Yao-ming. Surface Densification and Heat Fixation of Chinese White Poplar by Hydro-Thermal Control[J]. China Wood Industry, 2012,26(2):18-21.
[1]王艳伟,黄荣凤,张耀明.水热控制下杨木的表层密实化及固定技术[J].木材工业,2012,26(02):18-21. DOI： 10.19455/j.mcgy.2012.02.005.

WANG Yan-wei, HUANG Rong-feng, ZHANG Yao-ming. Surface Densification and Heat Fixation of Chinese White Poplar by Hydro-Thermal Control[J]. China Wood Industry, 2012,26(2):18-21. DOI： 10.19455/j.mcgy.2012.02.005.

摘要

通过改变木材的表层水分含量,并利用热压机压板的热量对木材进行水热控制,开展毛白杨木材的表层密实化研究,分析毛白杨木材表层压缩密实化后的密度、硬度和恢复率等能指标。结果表明:表层密实化后的毛白杨木材的表层密度达到0.92g/cm3,为对照材的1.8～2.1倍;硬度达到22.3N/mm2,为对照材的2.4倍;压缩木经180℃、4h的热处理后,变形恢复率可降低30%。

Abstract

Samples of Chinese White Poplar were hot-compressed under various temperatures and surface layer water content.After densification,the following tests were evaluated:surface density,hardness,and deformation recovery rate.The results showed that,after pressing,the surface layer density and hardness were improved.Then,by keeping the samples under 180 ℃ for 4 hours after pressing,the deformation recovery rate decreased by 30%.