Density Profile and Dimensional Stability of Solid Wood Floor Substrates Treated with Light Compression and Pressurized Steam

HUANG Rong-feng; HUANG Qiong-tao; HUANG Yan-hui; CAI Qi; LIU Zi-huan

doi:10.19455/j.mcgy.20190202

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Density Profile and Dimensional Stability of Solid Wood Floor Substrates Treated with Light Compression and Pressurized Steam
1. Key Lab of Wood Science and Technology of State Forestry and Grassland Administration
2. Research Institute of Wood Industry,Chinese Academy of Forestry
3. Yihua Lifestyle Technology Co.,Ltd.
Vol. 33, Issue 2, Pages: 6-10(2019)
DOI： 10.19455/j.mcgy.20190202

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[1]黄荣凤,黄琼涛,黄彦慧,蔡琦,刘子欢.表层微压缩和加压热处理实木地板基材的剖面密度分布和尺寸稳定性[J].木材工业,2019,33(02):6-10.

HUANG Rong-feng, HUANG Qiong-tao, HUANG Yan-hui, et al. Density Profile and Dimensional Stability of Solid Wood Floor Substrates Treated with Light Compression and Pressurized Steam. [J]. China Wood Industry 33(2):6-10(2019)
[1]黄荣凤,黄琼涛,黄彦慧,蔡琦,刘子欢.表层微压缩和加压热处理实木地板基材的剖面密度分布和尺寸稳定性[J].木材工业,2019,33(02):6-10. DOI： 10.19455/j.mcgy.20190202.

HUANG Rong-feng, HUANG Qiong-tao, HUANG Yan-hui, et al. Density Profile and Dimensional Stability of Solid Wood Floor Substrates Treated with Light Compression and Pressurized Steam. [J]. China Wood Industry 33(2):6-10(2019) DOI： 10.19455/j.mcgy.20190202.

摘要

采用水热控制方法,进行番龙眼和桦木地板基材表层微压缩,微压缩层厚度可控制在2～3 mm,表层密度提高0.15 g/cm,3,以上,芯部密度不变;再用加压热处理以固定压缩变形,改善尺寸稳定性。处理基材加工的地板尺寸变化率指标均比GB/T 35913-2018《地采暖用实木地板技术要求》限值低50%以上,吸湿变形回弹率大幅降低,加压热处理对压缩变形的固定效果非常显著。

Abstract

In this study, taun（Pometia spp.） and birch（Betula spp.） wood were compressed by 2-3 mm of thickness and treated with pressurized steam for compression fixing. It was found that surface density of the two wood samples increased by at least 0.15 g/cm,3, with unchanged densities in inner parts of the wood samples. After being processed into wood floors, dimensional change of the wood floor samples was at least 50% lower than the requirement of the National Standard GB/T 35913-2018,and thickness recovery of taun and birch wood floor samples was only 0.04 mm and 0.13 mm respectively, that proved effective compression fixation of the pressurized steam treatment.

关键词

实木地板基材表层微压缩加压热处理尺寸稳定性变形回弹

Keywords

solid wood floor substratelight surface compressionpressurized steam treatmentdimension stabilitydeformation recovery

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Studies on liquor phase acetylation of wood and the dimension stability and decay resistance of acetylated wood