研究生: |
羅國書 Kuo-Shu Lo |
---|---|
論文名稱: |
高性能耐燃複合紗開發研究 A Study on high performance flame-retardant composite yarns |
指導教授: |
蘇清淵
Ching-Iuan Su |
口試委員: |
邱顯堂
Chih-Wei Chiu 李俊毅 Jiunn-Yih Lee |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 69 |
中文關鍵詞: | 氧化纖維 、Technora® 、靜電開纖 、牽伸拉斷 、複合紗 、限氧指數 |
外文關鍵詞: | oxidized fibers, Technora®, static spreading method, stretch-break, composite yarn, limited oxygen index |
相關次數: | 點閱:345 下載:0 |
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本研究係使用氧化纖維與Technora®纖維混合,以加強其防火材料之機械特性,改善其產業用途。實驗過程中,以紡製15與17Nm複合紗為目標,使用兩對羅拉牽伸裝置,將氧化纖維束牽伸拉斷成短纖維,同時將Technora®喂入置於中羅拉入口處上方的靜電開纖器具,經由上下皮圈引導,在前羅拉出口處的紡紗三角區域紡成高性能氧化纖維複合紗。實驗中對於Technora® 纖維束使用五種不同加工方式,觀察兩種纖維結合狀態,探討各種變因對複合紗成紗結構之影響。以複合紗CV%、強力、耐磨性、以及限氧指數(Limited Oxygen Index, L.O.I)之測試,進行複合紗性能評估。實驗結果顯示,複合紗支數CV%隨著紡製支數提升而有所上升,強力隨著撚度提高有上升趨勢,當撚係數超過3.5時,達到臨界值後開始下降。如果同時使用磨擦式與噴氣式輔助開纖裝置下,Technora®複絲能較有效散開,但因破壞了纖維束結構,會使得紗線CV%略為上升,且強力略為下降。經過兩種磨耗測試下,複合紗殘餘強力維持在78%以上水準。LOI值取決於複合紗表面其氧化纖維覆蓋程度,隨著支數上升有下降趨勢,但整體均可達到40以上。
This study mixed oxidized fibers with Technora® fibers to enhance the mechanical properties of these fireproof materials and improve their industry application. In the experiment, with the aim to spin 15 and 17Nm composite yarns, two pairs of roller drafts were used to draft oxidized fibers into short fibers. Meanwhile, Technora® was fed to the fiber splitting unit by static electricity, which was above the inlet of middle roller, guided by upper and lower aprons, and spun to high-performance composite yarns at the spinning triangular space at the outlet of front roller. Five different methods were used in the experiment for processing Technora® fiber bundles, the fiber bonding between the two kinds of fibers was observed, and the influences of various causes on the structure of composite yarns were discussed. The CV%, yarn strength, abrasion resistance and L.O.I tests were conducted for evaluating the performances of composite yarns. The experimental results showed that, in the general, CV% increased with the increase of spinning counts; yarn strength increased as the twist increased, but when the twist factor exceeded 3.5 to the critical level, it began to decrease. The abrasion and spray auxiliary splitting unit could effectively make Technora® composite fibers loose; however, since it caused damage to the structure of fiber bundles, CV% of yarn might increase slightly but the strength lowered. In both abrasion tests, the average residual strength of composite yarns maintained at a level of 80%. L.O.I value was dependent on the oxidized fiber surface covering, declining as the counts increased, generally above 40.
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