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首页> 外文期刊>Journal of Forestry Research >Effect of moisture and fungal exposure on the mechanical properties of hem-fir plywood
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Effect of moisture and fungal exposure on the mechanical properties of hem-fir plywood

机译：水分和真菌暴露对杉杉胶合板力学性能的影响

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摘要

Hem-fir plywood were exposed to two brown rot fungi, Gloeophyllum trabeum and Postia placenta, and one white rot fungus, Trametes versicolor, to investigate the effect of fungal decay on mechanical properties of plywood. Results showed that modulus of rupture (MOR) and modulus of elasticity (MOE) of hem-fir plywood declined significantly by inoculating fungi, and weight loss of sample had a modest decrease. The fungi also made a greater effect on MOR than on MOE. Of three fungi, Postia placenta caused a most significant weight loss, and Gloeophyllum trabeum resulted in a largest flexural properties loss. Substantial declines in MOR and MOE of hem-fir plywood were also observed when the plywood samples were stored under wet conditions over 15 weeks, even in the absence of fungal attack.
机译：将半杉木胶合板暴露于两种棕色腐烂真菌格劳毛小叶和胎盘胎盘，以及一种白色腐烂真菌特雷美色，以研究真菌腐烂对胶合板机械性能的影响。结果表明，接种真菌后，杉木杉胶合板的断裂模量（MOR）和弹性模量（MOE）显着下降，样品的失重有所下降。真菌对MOR的影响也大于对MOE的影响。在三种真菌中，Postia胎盘引起的体重减轻最为明显，而Gloeophyllum trabeum造成的挠曲特性损失最大。当胶合板样品在潮湿条件下保存15周以上时，即使没有真菌侵袭，也可以观察到杉杉胶合板的MOR和MOE大幅下降。

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