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首页> 外文期刊>Journal of Applied Polymer Science >The Effect of Melt Spinning Process Parameters on the Spinnability of Polyetheretherketone
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The Effect of Melt Spinning Process Parameters on the Spinnability of Polyetheretherketone

机译：熔体纺丝工艺参数对聚醚醚酮可纺性的影响

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摘要

This study has been carried out to investigate the processing parameters affecting polyetheretherketone's (PEEK) spinnability in a melt spinning process. PEEK has excellent mechanical and thermal properties and fibers made from it could be used in extreme environments. Different PEEK grades were characterized thermally and rheologically to see which one is the most suitable for fiber spinning. The spinning tests made with the most suitable grade (Victrex 151G) show that increased processing temperature, increased capillary diameter or shorter spinning path length improves spinnability. The best fibers made in optimal processing conditions (400C temperature, 30/1 mm capillary, and 5 cm spinning path) were 18 m in average diameter. Because of the limitations of the system used, variations in fiber thickness were noticeable and worsened the spinning stability. Scanning electron microscope photos confirmed these variations, and they were also visible in an optical microscope. The selected low-viscosity PEEK grade provided good spinnability but gave filaments with only mediocre mechanical properties, the tensile strength being around 280 MPa.
机译：进行这项研究以研究在熔融纺丝过程中影响聚醚醚酮（PEEK）可纺性的加工参数。 PEEK具有出色的机械和热性能，并且由其制成的纤维可用于极端环境。对不同等级的PEEK进行了热学和流变学表征，以确定哪种最适合纤维纺丝。使用最合适的牌号（Victrex 151G）进行的纺丝测试表明，提高加工温度，增加毛细管直径或缩短纺丝路径长度都会改善可纺性。在最佳加工条件（400℃温度，30/1 mm毛细管和5 cm纺丝路径）下制成的最佳纤维的平均直径为18 m。由于所用系统的局限性，纤维厚度的变化很明显，使纺丝稳定性变差。扫描电子显微镜照片证实了这些变化，并且它们在光学显微镜中也可见。所选的低粘度PEEK等级可提供良好的可纺性，但使长丝的机械性能仅中等，拉伸强度约为280 MPa。

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