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首页> 外文期刊>Holzforschung >Relations of density, polyethylene glycol treatment and moisture content with stiffness properties of Vasa oak samples
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Relations of density, polyethylene glycol treatment and moisture content with stiffness properties of Vasa oak samples

机译:瓦萨橡木样品的密度,聚乙二醇处理和水分含量与劲度特性的关系

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Treatment with polyethylene glycol (PEG) is the preferred method for the conservation of waterlogged archaeological wooden objects. However, PEG impregnation leads to softening and increased hygroscopicity of the material. The present study compiles experimental results concerning the full elastic properties of PEG impregnated archaeological wood from the Vasa ship in relation to its basic density, PEG content (PEGC) and moisture content (MC). The results show a correlation between a more porous microstructure and high PEGC, and consequently, higher MC. The PEG and moisture contribute to the mass of the wooden object as well as to the softening of the material, which are undesired properties in a larger load-carrying wooden structure. A compromise between the improved dimensional stability and degradation of mechanical properties should therefore be considered in the conservation of wooden objects treated with PEG.
机译:聚乙二醇(PEG)处理是保存淹水考古木制物体的首选方法。但是,PEG浸渍会导致材料软化和增加吸湿性。本研究汇总了有关Vasa船上PEG浸渍的考古木材的全弹性特性与其基本密度,PEG含量(PEGC)和水分含量(MC)的实验结果。结果表明,较高的微孔结构与较高的PEGC之间存在相关性,因此,较高的MC也具有相关性。 PEG和水分有助于木质物体的质量以及材料的软化,这在较大的承载木质结构中是不希望的特性。因此,在保存用PEG处理的木制物体时,应考虑在改善的尺寸稳定性和降低机械性能之间做出折衷。

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