树种与心边材含量对超薄高密度纤维板物理力学性能的影响  

Effect of Tree Species and Heartwood-sapwood Content on the Physical and Mechanical Properties of Ultra-thin High-density Fiberboard

作　　者：杨春梅[1] 王婷婷 田心池 闵德秀 孙成文 YANG Chunmei;WANG Tingting;TIAN Xinchi;MIN Dexiu;SUN Chengwen(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China;Shandong Xingang Enterprise Group Co.,Ltd.,Shandong Linyi 276000,China)

机构地区：[1]东北林业大学机电工程学院,哈尔滨150040 [2]山东新港企业集团有限公司,山东临沂276000

出　　处：《包装工程》2025年第3期1-9,共9页Packaging Engineering

基　　金：国家重点研发计划(2021YFD220060404);中央高校基本科研业务费专项资金项目(2572023CT14-01)。

摘　　要：目的研究树种与心边材含量对超薄高密度纤维板物理力学性能的影响。方法以不同树种(杨木、桉木和松木)及大径级杨木的心材与边材纤维为原料,以酚醛树脂(PhenolFormaldehyde,PF)为胶黏剂制备超薄高密度纤维板,深入探究不同树种与心边材含量对板材物理力学性能的影响,并根据实验结果建立心材含量、边材含量与超薄高密度纤维板物理力学性能的数学模型。结果在不同树种中,杨木纤维板的物理力学性能最优,其静曲强度为54.61 MPa,弹性模量为4.967 GPa,吸水厚度膨胀率为27.87%,表面粗糙度为2.361μm。在本实验范围内,当心材含量为30%、边材含量为50%时,超薄高密度纤维板的物理力学性能最佳,其静曲强度为57.69MPa,弹性模量为5.812GPa,吸水厚度膨胀率为27.43%,表面粗糙度为2.719μm。上述纤维板的物理力学性能均超过《超薄高密度纤维板》(T/CNFPIA 3007—2019)规定的性能标准。结论可根据实际需要调整板材的树种和心边材含量,制备满足生产工艺和使用要求的超薄高密度纤维板产品。The work aims to study the effect of tree species and heartwood-sapwood content on the physical and mechanical properties of ultra-thin high-density fiberboard.Ultra-thin high-density fiberboard was prepared with fibers from different tree species(poplar,eucalyptus and pine)and heartwood-sapwood fibers from large-diameter poplar as raw materials and phenol formaldehyde(PF)resin as the adhesive.The effects of different tree species and heartwood-sapwood contents on the physical and mechanical properties of the fiberboard were investigated in depth.Based on the experimental results,the mathematical model of the relationship between heartwood content,sapwood content and the physical and mechanical properties of ultra-thin high-density fiberboard was established.Among different tree species,the physical and mechanical properties of poplar fiberboard were the best,with a bending strength of 54.61 MPa,an elastic modulus of 4.967 GPa,a water absorption thickness swelling rate of 27.87%,and a surface roughness of 2.361μm.Within the range of this experiment,when the heartwood content was 30% and the sapwood content was 50%,the physical and mechanical properties of the ultra-thin high-density fiberboard were the best,with a bending strength of 57.69 MPa,an elastic modulus of 5.812 GPa,a water absorption thickness swelling rate of 27.43%,and a surface roughness of 2.719μm.The physical and mechanical properties of the above fiberboard all exceeded the performance standards stipulated in"Ultra-thin High-density Fiberboard"(T/CNFPIA 3007-2019).The tree species and heartwood-sapwood content of the fiberboard can be adjusted according to actual needs to prepare ultra-thin high-density fiberboard products that meet the production process and usage requirements.

关 键 词：超薄高密度纤维板 树种 心边材 物理力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]