请关注官方微博
请关注官方微博
请关注官方微信
请关注官方微信号林产工业
     设为首页 | 加入收藏

  • ISSN 1001-5299    CN 11-1874/S
  • 邮发代号:2-141
  • 主办:中国林产工业协会 国家林业和草原局林产工业规划设计院
林产工业
  论文 本期目录 | 过刊浏览 | 高级检索 |
干燥方式对地采暖用实木地板尺寸稳定性的影响
以烘干法和压干法两种干燥方式处理的8种地采暖用实木地板为试验材料,与烘干法作对比,探究压干法对地采暖用实木地板尺寸稳定性的影响;通过木材水分吸湿特性分析压干法提高地采暖用实木地板尺寸稳定性机理。结果表明:采用压干法能明显提高地采暖用实木地板尺寸稳定性,但对径向耐湿尺寸稳定性改善不大。相比烘干法,采用压干法干燥的番龙眼、印茄、朴木、栎木4个树种的地采暖用实木地板径向收缩率分别降低53.8%、60.0%、47.1%、44.4%,轴向收缩率分别降低70.9%、55.6%、37.0%、37.5%,轴向膨胀率分别降低43.2%、31.8%、23.4%、16.5%。这与木材半纤维素的降解、分子链结构活性的增强和纤维素结晶度增加有关。
1.河源职业技术学院,河源 517000; 
2.国家家具产品质量监督检验中心(广东),佛山 528000
Effects of Drying Processes on the Dimensional Stability of Solid Wood Flooring for Ground Heating
In this study, drying method and the pressure drying method were used to treat 8 kinds of solid wood flooring for ground heating. Take kiln- drying method as a comparison, the effects of pressure drying on the dimensional stability of solid wood flooring for underground heating were evaluated. Moreover, the moisture#br# absorption test was also conducted to explore the mechanism of improving the dimensional stability of solid wood flooring for ground heating. The results showed that pressure drying method could improve the dimensional stability of solid wood flooring for ground heating significantly, but has little effect on the wet-resistant dimensional stability in radial direction. Compared with kiln- drying methods, the shrinkage rate of 4 tree species, namely Pometia spp., Intsia spp., Celtis spp., Quercus spp.of solid wood flooring for ground heating was reduced by 53.8%, 60.0%, 47.1% and 44.4% in radial direction, respectively. Meanwhile, the shrinkage rate in axial direction decreased by 70.9%, 55.6%, 37.0%, 37.5%, respectively, and the expansion rate inaxial direction decreased by 43.2%, 31.8%, 23.4%, and 16.5%, respectively. The improvement of dimensional stability of solid wood flooring for ground heating by pressure drying method is mainly due to the degradation of wood hemicellulose, the increased activity of molecular chain structure and the increase of cellulose crystallization.
1.He Yuan Polytechnic, Heyuan 517000, China; 
2.National Furniture Product Quality Supervision and Inspection Center (Guangdong), Foshan 528000, China