杉木造林木壓縮單板之性質

Properties of Compressed Veneer from China Fir Plantation Wood

黃國雄(Gwo-Shyong Hwang) ； 陳欣欣(Shin-Shin Chen) ； 余欣怡(Hsin-Yi Yu) ； 王瀛生(Ying-Shen Wang)

《台灣林業科學》 20卷3期 (2005/09) Pp. 249-257

https://doi.org/10.7075/TJFS.200509.0249

摘要

本研究之目的在探討杉木造林木壓縮單板之性質，首先將杉木旋切成厚度25 mm之單板，經乾燥後於高溫下進行壓縮加工而成壓縮單板，性質測試之內容包括回復度、磨耗性、粗糙度、動彈性係數、靜曲強度、靜曲彈性係數與硬度。
壓縮單板之回復度隨壓縮加工之時間與溫度升高而降低。壓縮單板之磨耗深度較未壓縮者小，但兩者之磨耗重量則相近。壓縮加工對單板之表面粗糙度具有明顯之改善效果。壓縮單板之動彈性係數、靜曲強度、靜曲彈性係數與硬度均隨比重之增加而明顯增大，且各種強度性質與比重均具有良好之直線關係。

關鍵字

杉木 ； 壓縮單板 ； 回復度 ； 粗糙度 ； 磨耗性

並列摘要

In this study, we investigated the properties of compressed veneer from China fir (Cunning-hamia lanceolata) plantation wood. China fir wood was cut into veneer at 2.5 mm in thickness using a rotary lathe. After drying, the veneer was compressed by a press at a high temperature. The set recovery, abrasion, roughness, dynamic Young's modulus, modulus of rupture (MOR), modulus of elasticity (MOE), and hardness of the compressed veneer were then tested.
The set recovery of the compressed veneer deteriorated with the press time and temperature rises. The abrasion depth of the compressed veneer was less than that of the uncompressed veneer, but the abrasion weights of both were approximately the same. The compression process caused a significant improvement in the surface roughness of the veneer. The dynamic Young's modulus, MOR, MOE, and hardness of the compressed veneer showed obvious increases with increasing specific gravity. A linear relationship between the specific gravity and each strength property was found.

並列關鍵字

China fir ； compressed veneer ； set recovery ； roughness ； abrasion