米级透明木单板的制备及性能  

Preparation and Performance of Meter-Scale Transparent Wood Veneer

作　　者：唐启恒[1] 邹淼 张镭 郭文静[1] 常亮[1] 高黎[1] TANG Qiheng;ZOU Miao;ZHANG Lei;GUO Wenjing;CHANG Liang;GAO Li(Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091

出　　处：《木材科学与技术》2023年第5期47-52,共6页Chinese Journal of Wood Science and Technology

基　　金：国家林业和草原科技创新青年拔尖人才项目“高效光管理透明木材的制备及光传播机制研究”(2022132007)。

摘　　要：透明木材现有的制造工艺技术只能制备出小尺寸样品,距离产业化应用较远。本研究以桦木(Betula sp.)单板为原料,采用漂白工艺制备大幅面脱色木单板,在真空条件下浸渍环氧树脂,固化后可制得长度达1 m的透明木单板。研究结果表明,透明木单板具有良好的透光性能,其平均透光率约为76.7%,雾度为81.4%;因环氧树脂浸入木材细胞中,透明木单板纵、横向的拉伸强度均大于处理前单板的强度;最后对米级透明木单板的制备工艺及成本进行分析。透明木材可应用于建筑天井、汽车天窗、办公室和卫生间的门窗、隔断等隐蔽空间,研究成果可为透明木材的工业化应用奠定理论基础。Transparent wood is a new type of wood-based composites.The existing manufacturing technology can only prepare small-size samples,which was far below the requirement of industry scale application.In this study,birch(Betula sp.)veneer was used as raw material to prepare large-dimension decolorized wood veneer by bleaching treatment.Afterwards,the transparent wood with a length of 1 meter was prepared by impregnating epoxy resin under vacuum condiction.The results showed that the transparent wood has good light transmittance with the average light transmittance and haze of 76.7%and 81.4%,respectively.Because the epoxy resin was immersed in wood cells,the longitudinal and transverse tensile strengths of transparent wood were greater than those of original wood.Finally,the preparation process and cost of meter-scale transparent wood veneer were also analyzed.This study not only provided a reference for promoting the application of transparent wood in concealed spaces such as building patios,car skylights,offices,bathroom doors and windows,and partitions but also lays a theoretical foundation for the industry application of transparent wood.

关 键 词：米级透明木单板 环氧树脂 制造工艺 

分 类 号：S781[农业科学—木材科学与技术] TB332[农业科学—林学] TS65[一般工业技术—材料科学与工程]