ISSN   1004-0595

CN  62-1224/O4

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木质材料摩擦学研究进展

Research Progress of Timber Tribology

  • 摘要: 作为天然可再生高分子材料,木质材料具有环境友好以及加工和维护成本低等优点,在许多行业具有广泛的应用. 然而,在加工和使用过程中,木质材料遇到的摩擦磨损问题制约了其高端应用. 近年来,研究人员针对木质材料摩擦学开展了大量研究工作. 本文中介绍了木质材料的物理结构、化学组成和力学特性,分析了基础物理性质及工艺条件对摩擦学性能的影响,综述了了木质材料相关摩擦学性能在木材加工、土木工程、家居行业和复合材料行业等不同场景下的应用和先进木质材料在高强度材料、光管理材料、热管理材料和工程结构材料等方面的应用研究,提出了木质材料摩擦学研究中存在的问题,对木质材料摩擦学的未来研究方向做出展望.

     

    Abstract:
    Owning sustainable properties, natural wood materials with the environmental-friendly performance can offer numerous advantages at the low cost for fabrication and maintenance in many engineering fields. Recently, natural wood materials have attracted great attention for a wide range of renewability due to biodegradability and multifunctionality. However, due to the tribological phenomena during the processing and the utilization, the advanced applications of natural wood materials are still challenged. Owing to the anisotropic structure, natural wood materials exhibit non-linear characteristics in mechanic performance. So many researchers have focused on the complex relationship between the hierarchically porous structure and mechanic property. From the perspective of wood processing, the development in engineering application might benefit from the tribological research.
    It has been found that the natural wood’s tribological performance have been influenced by its physical properties, chemical components and processing parameters. In terms of physical properties of wood, timber’s tribological performance have been affected by the water content of the wood, the texture direction and the roughness on wood surface. From the point of view of chemical component, both modified wood and wood extractive might improve the friction-reduction and wear-resistance. As far as the processing parameters are concerned, the sliding velocity between the friction pairs, the temperature at the friction interface and the applied loads could make an impact on timber’s tribological behavior. The positive consequence from processing parameters obviously can promote the technical level of wood industry.
    Recent progress on the tribology of timber is presented in various application scenarios. The diversified timber tribology has been developed with the sustained progress of industrial technology. In the traditional wood processing, cutting technique is still important. So timber tribology is meaningful for the utilization and preservation of cutting tools. For the mortise-tenon connection in civil engineering, static friction force plays an important role to stabilize the wood construction. With the rising of intelligent household industries, timber tribology has been taken into account at the design stage. The friction wood welding technique has been exploited to connect the different wood components. Wood-plastic composites and wood ceramic have also been investigated to improve tribological performance.
    Recently, diverse kind of modified wood-based materials and techniques have attracted the researcher’s attention due to their multifunction. The potential applications of high strength materials, transparent materials for light management, thermal interface materials and structural materials in engineering have been presented. The disadvantages of timber tribological research have been also concerned. The preliminary prospect on the research of timber tribology has been carried out.

     

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