頁籤選單縮合
題 名 | 磷胺化合物對於木材尺寸安定性之影響=Effects of Phosphoramides on Wood Dimensional Stability |
---|---|
作 者 | 李鴻麟; 陳忠憲; | 書刊名 | 臺灣林業科學 |
卷 期 | 15:1 2000.03[民89.03] |
頁 次 | 頁137-145 |
分類號 | 436.188 |
關鍵詞 | 磷胺化合物; 抗收縮能; 平衡含水率; 體積膨脹率; 尺寸安定性; Phosphoramide; Antishrink efficiency; Equilibrium moisture content; Volumetric swelling; Dimensional stability; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗目的在於評估木材經磷胺化合物處理後之尺寸安定性。木材係以五氧化二磷分別與十二種有機胺在二甲基甲醯胺中反應,反應後木材再以浸水法測定其抗收縮能;平衡含水率與體積膨脹率變化情形,係將處理材放置於27℃與30%RH 、27℃與65% RH、27℃與90% RH的環境中21天測試。試驗結果顯示:磷胺化合物處理材的抗收縮能數值較低;其平衡含水率與體積膨脹變化率則隨著相對濕度的增加而變大,尺寸安定性較乙醯化、環氧化、與異氰酸鹽化處理材差;磷胺化合物無法有效地改善木材的尺寸安定性。 |
英文摘要 | To evaluate the dimensional stability of phosphoramide-reacted wood, wood was reacted with a mixture which was derived from compounding phosphorus pentoxide and each of 12 amines including alkyl, halophenyl, and phenyl amines in N,N-dimethylformamide. Dimensional stability of such reacted wood was analyzed by antishrink efficiency (ASE) using the water-soak method. Volumetric swelling and equilibrium moisture content (EMC) of phosphoramide-reacted woods were also determined after being maintained at 27 C and 30% RH, 27 C and 65% RH, and 27 C and 90% RH for 21 d. The results revealed that phosphoramide-reacted woods had lower antishrink efficiency values than those of acetylated wood, expoxided wood, and isocyanated wood. Volumetric swelling and equili-brium moisture content of phosphoramide-reacted wood were increased when exposed to an environment with a higher relative humidity. Phosphoramides had less effect on improving the dimensional stability of wood. |
本系統中英文摘要資訊取自各篇刊載內容。