可塑杨木单板3D结构材制备与力学性能研究  

Preparation and Mechanical Properties of 3D Structural Materials Made from Moldable Poplar Veneer

作　　者：蒋向向 卢芸[1] 付宗营 苟进胜[2] JIANG Xiangxiang;LU Yun;FU Zongying;GOU Jinsheng(Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China;Beijing Key Laboratory of Wood Science and Engineering,College of Materials Science and Technology,Beijing Forestry University,Beijing 100083,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 [2]北京林业大学材料科学与技术学院,木材科学与工程北京市重点实验室,北京100083

出　　处：《木材科学与技术》2024年第6期55-61,共7页Chinese Journal of Wood Science and Technology

基　　金：国家自然科学基金优青项目“木材超分子结构诠析与优异功能构筑”(32122058)。

摘　　要：以杨木单板为原料,通过脱木质素处理结合空气干燥和水浸工艺,制备具有优异折叠成型性能的塑性杨木单板。利用波浪状模具并结合组装工艺,最终制备模制木材和3D结构材。采用多种表征手段系统分析塑性杨木单板的宏/微观形貌以及3D结构材的结构稳定性和抗压强度。结果表明,塑性杨木单板在沿木纤维方向上表现出最大的拉伸强度为190.67 MPa,约是未处理单板的5倍;单层3D结构材的抗压强度为0.97 MPa,具有优异的结构稳定性和机械支撑力。通过层层组装制备的多层3D结构材具有轻质高强等优点,为木材的高值化利用提供了新思路。Moldable poplar veneer with the excellent folding formability was produced through delignification combined with air drying and water immersion processes.Molded wood products and 3D structural materials were created using a wavy mold and integrating a hot-press assembly technique.Various characterization methods were employed to analyze the macro-and micro-morphology of the moldable poplar veneer,as well as the structural stability and compressive strength of the 3D structural materials.The results showed that the moldable poplar veneer exhibited the superior tensile strength(190.67 MPa)in longitudinal direction of the wood,which were nearly five times that of untreated veneer.The compressive strength of a single-layer 3D structural material was about 0.97 MPa,demonstrating excellent structural stability and mechanical strength as a supporting component.Additionally,the multilayer 3D structural materials,produced through layer-by-layer assembly,offer advantages such as lightweight and high strength,providing a novel approach to the high-value-added utilization of wood.

关 键 词：杨木单板 塑性单板 模压成型 3D结构材 力学性能 

分 类 号：S792.11[农业科学—林木遗传育种] TS653[农业科学—林学]