文献类型：期刊文献

英文题名：Scalable high-performance wood-based composites prepared by hydro-mechanical treatment

作者：Huang, Yuxiang[1] Lin, Qiuqin[1] Fu, Feng[1] Lin, Lanying[1] Yu, Wenji[1]

第一作者：黄宇翔

通信作者：Yu, WJ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2023

卷号：267

外文期刊名：COMPOSITES PART B-ENGINEERING

收录：;EI(收录号：20234214904053);Scopus(收录号：2-s2.0-85173829419);WOS:【SCI-EXPANDED(收录号:WOS:001098290700001)】；

基金：This work was financially supported by the Chinese Academy of Forestry Fundamental Research Fund (Grant No. CAFYBB2020ZA003) . The authors wish to acknowledge Qi Gao and Keying Long for assistance with the experimental operation. Thanks to Jian Gan for assistance with the diagram of the wood-based composites preparation process in this report. This work made use of Research Institute of Wood Industry, Chinese Academy of Forestry of the Micro-Fourier transform infrared (FT-IR) microspectroscopic imaging system (Spotlight 400, PerkinElmer Inc., USA) and thanks is given to Dr. Yamei Zhang and Dr. Juan Guo for conducting the Micro-FTIR experiments. We acknowledge Beijing Zhongkebaice Technology Service Co., Ltd. for the characterization results.

语种：英文

外文关键词：Wood; Microstructures; Strength; Assembly

摘要：Developing an efficient, eco-friendly method for manufacturing structural biomaterials is crucial in fostering environmental sustainability. In this study, we introduced a hydro-mechanical pretreatment coupled with resin impregnation and hot pressing to create high-performance wood-based composites (WC) using rapidly growing natural wood. We conducted a thorough analysis to assess the impact of water content on the physical and chemical properties of natural wood, as well as the structural response of wood undergoing hydro-mechanical treatment. The results demonstrated that water significantly aids in transforming the weak-phase structure of wood, thereby preserving wood cell integrity to the maximum extent during subsequent mechanical dissociation processes. Due to the presence of retained cells and the distinctive three-dimensional bonding interface structure, the WC exhibited a bending strength of 231 MPa and a modulus of elasticity of 25 GPa, both surpassing those of natural wood by a factor of 2.1 and exceeding typical wood-based composites. Furthermore, WC exhibited minimal dimensional changes, with a mere 6.45 % increase in thickness and a 1.65 % increase in width following a 24-h hydrothermal treatment at 63 degrees C. Our approach to producing high-performance WC through a simple, entirely physical method utilizing rapidly growing natural wood holds great potential for advancing the development of a low-carbon, environmentally sustainable society.