安徽农业大学林学与园林学院;安徽农业大学林木材质改良与高效利用国家林业和草原局重点实验室;国家林草局重组材工程技术研究中心,中国林业科学研究院木材工业研究所;
分析了高密度重组竹的孔隙率、微观结构、耐水性和力学性能，并通过构建性能参数与密度的关系，探究密度对物理力学性能的影响规律。结果表明：随着密度的增大，孔隙率逐渐降低。当密度为1.37 g/cm3时，孔隙率仅为5.52%，竹材细胞基本实现了密实化；薄壁细胞和导管细胞发生严重变形，但纤维细胞的形态几乎未受影响。经4 h水煮-20 h 60℃干燥-4 h水煮处理后，吸水率、厚度膨胀率和宽度膨胀率均随密度的增大而下降，分别低至9.67%、7.62%和1.47%。水平剪切强度、顺纹抗压强度、静曲强度（MOR）和弹性模量（MOE）则随密度的增大而增大，分别高达28.83、215.53、354.00 MPa和28.75 GPa。所有重组竹的性能参数均达到了户外用重组竹的性能要求，且部分参数远超国标中规定的最高等级要求。此研究结果可为重组竹性能的调控与应用提供理论依据和数据参考。
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基本信息:
DOI：10.19531/j.issn1001-5299.202406004
中图分类号:S781.9
引用信息:
[1]许杨,刘倩,孙子健等.高密度重组竹的物理力学性能研究[J].林产工业,2024,61(06):20-26.DOI:10.19531/j.issn1001-5299.202406004.
基金信息:
国家重点研发计划课题（2022YFD2200903）; 安徽省自然科学基金青年项目（2208085QC91）; 安徽农业大学人才科研资助项目（RC372011）