頁籤選單縮合
題 名 | 10×10cm橡膠木正角材之窯乾基準 |
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作 者 | 翟思湧; 熊如珍; 黃清吟; | 書刊名 | 林業試驗所研究報告季刊 |
卷 期 | 5:3 1990.09[民79.09] |
頁 次 | 頁175-186 |
分類號 | 474.28 |
關鍵詞 | 正角材; 基準; 窯乾; 橡膠木; |
語 文 | 中文(Chinese) |
中文摘要 | 台灣中部產約35年生之巴西橡膠木,鋸為10X10X170cm之試材,以 高溫乾燥、預噴汽高溫乾燥、低∼高溫乾燥、與中∼高溫乾燥四種處理進行試驗。 結果顯示:高溫與預噴汽高溫乾燥,具有節省能源及縮短時間之功效,但易招致 乾裂與深棕變。低∼高溫與中∼高溫乾燥,可有效降低棕變程度,減少乾裂;但 會延長乾燥時間。若為防止棕變,橡膠木不宜採行高溫乾燥;高溫高濕會促進棕 變之發生。 |
英文摘要 | The objective of this research was to develop a kiln schedule for 10 X 10cm rubber wood (Hevea brasiliensis). Forty-one sample bolts, 170cm in length, ranging in diameter from 37 to 55cm, cut from sixteen 35-year-old rubber trees in central Taiwan, were used for this study. The test boards were kiln dried separately by four drying schedules and then compared primarily for drying rate and defects. The four treatments (drying schedules) were as follows: HT=high temperature drying. SH=presteaming-high temperature drying. LH=low∼high temperature drying. MH=medium∼high temperature drying. From this study we have concluded: 1.High temperature drying reduces quite a lot of drying time and energy consumption, but it is susceptible to incur checks and dark-brown stain. 2.Treatments HT and SH save power consumption more than 37 percent, save oil consumption more than 38 percent, and reduce drying time over 48 percent, as compared with treatments LH and MH. 3.A lower temperature and lower relative humidity kiln schedule can reduce the occurrence of drying checks and brown stain; however, ther drying time will be considerably prolonged. 4.It is suggested that 10 X 10cm rubber wood can be dried by high temperature, if brown stain is accepted by the end use; otherwise the lower temperature and lower relative humidity kiln schedule should be adopted. 5.We recommend that further tests be conducted to find out the best combination of temperature and relative humidity for preventing brown stain in rubber wood. |
本系統中英文摘要資訊取自各篇刊載內容。