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首页> 外文期刊>Journal of Wood Chemistry and Technology >Effects of Veneer Treatment with Copper-Based Preservatives on the Decay Resistance and Mechanical Properties of Poplar LVL
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Effects of Veneer Treatment with Copper-Based Preservatives on the Decay Resistance and Mechanical Properties of Poplar LVL

机译：铜基单板处理对杨木LVL耐腐性和力学性能的影响

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摘要

To improve the durability of poplar laminated veneer lumber (LVL), the veneers were impregnated with alkaline copper quaternary (ACQ) and copper azole (CA) at four retention levels, and the effects of the treatments on the LVL properties were examined. The results demonstrated that the treatments substantially improved the decay resistance of LVLs, with the decreases in mass losses ranging from 42.6% to 87.3%. However, retention levels greater than the specified standard values for Use Category C4.1 might be required for sufficient protection of poplar LVL against decay fungi. The bending and shear properties of all treated LVLs met the requirements for high-grade products specified in the LVL standard GB/T 20241. No significant effects of the treatments were observed on the mechanical properties of LVLs, and the LVLs did not display any visible delamination after boil-dry treatment. These results imply that the treatments significantly improved the decay resistance of poplar LVL products and had no appreciable impact on their mechanical and physical properties.
机译：为了提高杨木层压单板木材（LVL）的耐久性，将单板分别以四个保留水平浸渍碱性铜季铵盐（ACQ）和铜唑（CA），并检查了处理对LVL性能的影响。结果表明，这些处理显着改善了LVL的耐腐性，质量损失降低了42.6％至87.3％。但是，可能需要保留水平大于使用类别C4.1的指定标准值，才能充分保护杨树LVL免受腐烂真菌侵害。所有处理过的LVL的弯曲和剪切性能均符合LVL标准GB / T 20241中指定的高级产品的要求。未观察到处理对LVL的机械性能的显着影响，并且LVL没有显示任何可见的干燥处理后分层。这些结果表明，这些处理显着提高了杨树LVL产品的耐腐性，并且对其机械和物理性能没有明显影响。

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