頁籤選單縮合
題名 | 加拿大進口針葉樹材之物理及機械性質=Physical and Mechanical Properties of Softwoods Imported from Canada |
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作者 | 洪國榮; 林仁政; Hong, Kuo-jung; Lin, Jen-cheng; |
期刊 | 林業研究季刊 |
出版日期 | 20000900 |
卷期 | 22:3 2000.09[民89.09] |
頁次 | 頁47-54 |
分類號 | 436.187 |
語文 | chi |
關鍵詞 | 針葉樹材; 物理性質; 機械性質; Softwood; Physical property; Mechanical property; |
中文摘要 | 本研究主要是測進口自加拿大之西部側柏(Thuja plicata D.Don)、花旗松(Pinus Douglasii Car.)、西部鐵杉(Tsuga heterophylla Sarg.)和阿拉斯加扁柏(Chamaecyparis nootkatensis)等四種針葉樹材之物理與機械性質。木材經硝化纖維素塗料塗裝後,西部側柏顏色變化最大(△E*值最高),光澤度增加以花旗松最高。收縮率以花旗松最高;吸水率則以西部側柏最大。暴露在40°C、90%R.H.(EMC=19%)下,花旗松之縱向壓縮強度和靜曲強度明顯下降。 |
英文摘要 | The purpose of this study was to measure the physical and mechanical properties of western red cedar, Douglas-fir, western hemlock, and yellow cedar imported from Canada. The variations in color were higher for western cedar after the coat-treatment by using NC lacquer coations. The values of shrinkage (%) was higher for Douglas-fir, the water absorption (%) was higher for western red cedar. The compressive strength parallel to grain, static bending strength, and shear strength of Douglas-fir were evidently reduced when exposed to the conditions of 40°C、90% R.H.(EMC=19%). |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。