頁籤選單縮合
題 名 | 木材減濕乾燥基準表之訂定3 cm杉木 |
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作 者 | 翟思湧; 李銘鐘; | 書刊名 | 林業試驗所研究報告季刊 |
卷 期 | 2:1 1987.03[民76.03] |
頁 次 | 頁65-72 |
分類號 | 474.28 |
關鍵詞 | 木材; 杉木; 乾燥; 基準表; 減濕; |
語 文 | 中文(Chinese) |
中文摘要 | 本省中部產35年生杉木,鋸為3cm厚,180cm長,任意寬度之試材, 並依鋸割順序使相鄰四片試材分屬不同四組,然後以四種減濕乾燥基準進行試 驗,結果顯示:3cm杉木可減濕乾燥至含水量10%以下;S-4(表2)之效果較佳, 其乾燥率為0.38%MC/hr.,乾燥時間為10天;含水量與收縮率呈曲線相關,弦 向收縮率約為徑向之2倍。 |
英文摘要 | The objective of this study was to develop a dehumidification drying schedule for 3cm China Fir. Seventy-two 180cm-long bolts, ranging from 17 to 39cm in diameter, cut from eighteen 35-year-old trees in middle Taiwan, were used for this study. The bolts were then sawed into 3cm test boards. During cutting, each four consecutive boards were divided into four groups and sealed in plastic bags untill the time of drying. Each group of the test boards was dehumidification-kiln-dried by a different drying schedule (Table 2.) from green to a final moisture comtent of about 10%, and then compared primarily for drying rate and defects. Moisture content during drying was monitored by standard sample board technique. Results of this research are shown as follows: 1.Schedule S-4 (Table 2.) can be efficiently applied to dry 3cm China Fir, and the drying rate is about 0.38% MC/hr.. 2.The dehumidification dry kiln is capable of drying 3cm China Fir from green to a final moisture comtent below 10 percent within 10 days. 3.The relationship between moisture content and shrinkage is in a curvilinear correlation. The percent tangential shrinkage is about twice as much as radial does. |
本系統中英文摘要資訊取自各篇刊載內容。