篇名 | 聚芳醚酮液晶改善聚醚醚酮可紡性的纖維製備與性能研究 |
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卷期 | 24:5 |
並列篇名 | Preparation and Characterization of High-Performance Poly(ether ether ketone) Fibers with Improved Spinnability Based on Thermotropic Liquid Crystalline Poly(aryl ether ketone) Copolymer |
作者 | 欒加雙 、 胡加卓 、 嚴留新 、 李國偉 、 秦嘵濤 、 王貴賓 |
頁次 | 277-285 |
關鍵字 | 熔融紡絲 、 聚芳醚酮液晶 、 聚醚醚酮 、 纖維 、 可紡性 、 Melt Spinning 、 FPAEKLCP 、 Poly 、 Fibers 、 Spinnability |
出刊日期 | 201707 |
利用熔融紡絲法製備了聚芳醚酮液晶(FPAEKLCP )改性的高性能聚醚醚酮/聚芳醚酮液晶纖 維。利用毛細管流變儀,PLM,WAXD,TGA,電子單纖維強力儀研究了紡絲原料的流變性能, 纖維的順向與結晶,雙折射,機械性能和熱性能。結果表明新型FPAEKLCP顯著地降低了 PEEK 樹脂的熔體黏度,提高了 PEEK的可紡性,改善了初生絲的品質。纖維的拉伸性能主要依賴於 液晶添加量、拉伸溫度、拉伸倍數和退火處理。所製得的PEEK纖維具有良好的熱穩定性,熱 失重5°%時的溫度為564 oC。
High-performance poly(ether ether ketone) (PEEK) fibers were prepared by melt-spinning in the presence of thermotropic liquid crystalline poly(aryl ether ketone) copolymer (FPAEKLCP). The rheological of resin, birefringence, orientation, mechanical properties and thermal properties of the resulting PEEK/FPAEKLCP fibers were characterized by using a melt flow indexer, capillary rheometer, single fiber electronic tensile strength tester, polarized light microscopy (PLM), and wide-angle X-ray diffraction (WAXD), respectively. The results indicate that the melt viscosity of PEEK significantly reduced by introducing FPAEKLCP, followed by the improvements in the spinnability and the quality of as-spun fibers. The tensile properties of PEEK/FPAEKLCP fibers mainly depend on the content of FPAEKLCP, drawing temperature, drawing ratio, and annealing processes. The thermal stability of PEEK/FPAEKLCP fiber was excellent, the weight loss of fibers was less than 5% up to 564oC.