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℃。
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 564℃.
