林业工程学报2025，Vol.10Issue(4)：47-53,7.DOI:10.13360/j.issn.2096-1359.202408013
新能源车用轻量化重组杨桉混杂复合板制备及性能
Preparation and properties of light-weight hybrid composite panel of recombined poplar and eucalyptus for new energy vehicle
摘要
Abstract
Driven by national policies and the continuous advancement of technologies for new energy components and supporting infrastructure,new energy vehicles have rapidly captured a significant share of the market.However,this trend is likely to result in increased complexity in vehicle design and further lead to the weight of vehicles becoming noticeably heavier.Compared to other countries,China still faces a significant gap in the level of vehicle lightweight technology.The demand for reducing vehicle body weight and material consumption,while simultaneously increasing durability,continues to grow.It is essential to utilize lighter materials in vehicle construction.Research shows that the weight of the carriage floor of the new energy vehicle accounts for a significant portion of the total vehicle weight.Therefore,the lightweight of the carriage floor of the new energy vehicle has attracted more and more attention.To achieve a lightweight of the carriage floor,this study used a thin-shell structure as the foundation for weight reduction.High-density reconstituted wood sheets made from poplar and eucalyptus were utilized as face veneers.Additionally,four types of low-density composites made from poplar and eucalyptus with different structures,were used as core materials.The effects of the different composite structures and hot-pressing pressures on the mechanical properties of the panels,including water absorption,modulus of rupture,and modulus of elasticity were investigated.Based on the strength-to-weight ratio as the key indicator,the lightweight structure and pressing process were optimized:the core structure selected was eucalyptus-poplar-eucalyptus(E/P),and the hot-pressing pressure was set at 1.2 MPa.The results showed that the 24-h water absorption and 24-h water absorption thickness expansion rate of the reconstituted poplar eucalyptus hybrid composites with thin-shell structure were reduced,and the bonding strength,modulus of elasticity,and modulus of rupture were enhanced.Compared with the ply-bamboo for bottom boards of trucks and buses,the composites with the E/P core structure demonstrated the highest strength-to-weight ratio under the hot-pressing pressure of 1.2 MPa,reaching up to 137.73 MPa·cm3/g.The strength performance was better than that of the bamboo-bottom panel,the density was reduced by 25％,and the strength-to-weight ratio was increased by 22.4％.The lightweight of the carriage floor was successfully developed,offering a new type of lightweight carriage floor material for use in new energy vehicles.关键词
新能源车/杨桉复合板/轻量化设计/车厢底板/重组木Key words
new energy vehicle/poplar and eucalyptus composite panel/lightweight design/carriage floor/scrimber分类
通用工业技术引用本文复制引用
关明杰,武梦钰,车璞璘,刘旭,翟通军,卢艳..新能源车用轻量化重组杨桉混杂复合板制备及性能[J].林业工程学报,2025,10(4):47-53,7.基金项目
江苏省林业科技创新与推广项目(LYKJ-灌南[2023]01). （LYKJ-灌南[2023]01）
