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首页> 外文会议>Annual technical conference >Effects of Moisture Content, CEC, and Processing Conditions on Mechanical Properties and Long-Term Reliability of PBT Fiber-optic Buffer Tubes
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Effects of Moisture Content, CEC, and Processing Conditions on Mechanical Properties and Long-Term Reliability of PBT Fiber-optic Buffer Tubes

机译：水分含量，CEC和加工条件对PBT光纤缓冲管的力学性能和长期可靠性的影响

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摘要

Poly-butyleneterephthalate (PBT) Fiber optic buffer tubes were manufactured while varying initial material Carboxyl Endgroup Concentrtion (CEC), initial moisture content, as well as extrusion linespeed and cooling profile. Mechanical tests on aged and unaged tubes were correlated to the state of material degradation through capillary rheometer experiments and Melt Flow Index (MFI) measurements. Incomplete dryign and use of PBT with a high initial CEC are shown to lead to more rapid reduction of molecular weight during extrusion as well as poorer long-term hydrolytic stability. By proper selection of material and processing conditions, material lifetimes can be at least doubled.
机译：制造聚丁二醇酯（PBT）光学缓冲管，同时改变初始材料羧基末端浓缩（CEC），初始水分含量以及挤出线路和冷却曲线。通过毛细管流变仪实验和熔融流动指数（MFI）测量，对老化和一个单位管的机械测试与材料降解状态相关。具有高初始CEC的不完全性质和使用PBT，挤出过程中的分子量和长期水解稳定性较差的较差。 By proper selection of material and processing conditions, material lifetimes can be at least doubled.

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