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頁籤選單縮合
題名 | 熱壓對長薄片型粒片性質之影響=Effect of Hot-pressing on the Properties of Flake |
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作 者 | 陳載永; 陳勇全; 范振德; | 書刊名 | 林產工業 |
卷期 | 12:2 1993.06[民82.06] |
頁次 | 頁46-58 |
分類號 | 474.5 |
關鍵詞 | 長薄片型粒片; 熱壓; 泡桐; 木油桐; 柳衫; 掃描式電子顯微鏡; Flake; Taiwan paulownia; Wood oil tree; Japanese fir; Scanning electron microscope; |
語文 | 中文(Chinese) |
中文摘要 | 本研究乃以柳杉、木油桐、泡桐等連生樹種之長薄片型粒片為原料經熱壓試驗,探討其顯微構造、尺寸、比重及引張強度等變化之影響。其摘要如下:1.熱壓後之粒片於SEM之觀察,各樹種之粒片均受熱壓之影響,產生細胞壁、細胞腔扭曲變形之現象,以比重低之泡桐與木油桐較比重較高之柳杉為明顯。2.熱壓後之粒片,厚度均變薄,而其壓縮比以泡桐>木油桐>柳杉,而且表、底層之緊密度(壓縮比)大於中層,且隨板坏密度增高而增大。3.熱壓後之單一粒片,比重均有增加。其比重增之趨熱,依序為泡桐>木油桐>柳杉,並隨板坏密度增高而增大。通常表層、底層之比重增加較中層為大。4.熱壓後之單一粒片,其引張強度於柳杉粒片是隨著板坏密度增高而降低。木油桐卻有相反之趨勢。通常中層粒片之引張強度比表、底層為小。 |
英文摘要 | Flakes of the Japanese fir, Wood oil tree, and Taiwan paulownia were applies to investigate the hot-pressing process which affected the microstructure, dimension, specific gravity, and tensile strength of single flake. The experimental results of this research were be summarized as follows: 1. After hot-pressing process, the flakes were observed by the application of Scanning Electron Micro scope, and discovered that flakes of all species were affected by hot-pressing process, the distortion and deformation of cell walls and cell cavities were found, especially the lower specific gravity as Wood oil tree and Taiwan paulownia. 2. After hot-pressing process, thickness of single flake was thinner than unpressing flake, and compression compaction ratio of flakes were (1)Taiwan paulownia was higher than Wood oil tree and Japanese fir, (2)middle layer of mat was lower than surface and bottom layer. The compression compaction ratio will increase with the density of mat. 3. After hot-pressing process, specific gravity of single flake was increased, and specific gravity of flakes were Taiwan paulownia was higher than Wood oil tree and Japanese fir, middle layer of mat was lower than surface and bottom layer. The specific gravity of flake will increase with the density of mat. 4. The tensile strength of Japanese fir will decrease with increasing density of mat, but wood oil tree showing the opposite tendency. Generally the tensile strength of middle layer was lower than surface and bottom layer. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。