4 resultados para Multiyear Plan (PPA)

em Chinese Academy of Sciences Institutional Repositories Grid Portal


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An internal target experiment at HIRFL-CSRm is planned for hadron physics, which focuses on hadron spectroscopy, polarized strangeness production and medium effect. A conceptual design of Hadron Physics Lanzhou Spectrometer (HPLUS) is discussed. Related computing framework involves event generation, simulation, reconstruction and final analysis. The R&D works on internal target facilities and sub-detectors are presented briefly.

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本工作以LLDPE/LDPE为基料,添加氟弹性体加工改性剂DynamarPPA,采用LDPE挤出机加工农膜。结果表明,挤出机加工LLDPE的能力大幅度地提高,使共混物中LLDPE含量从原来的40%增加到80%,薄膜的物理机械性质亦有明显改善,而主机电流和挤出量未见变化。在添加无滴剂母料条件下,可加工LLDPE总含量达95%的无滴膜,且该膜的力学性质和光学性质均住。

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以LLDPE/LDPE共混树脂为基料,添加加工改性剂氟弹性体PPA,采用挤出吹塑成型加工薄膜制品。以LLDPE/LDPE质量比为1/2作空白样。按每克试样总量中含500μg PPA的比例添加PPA,当共混物中LLDPE含量为1/3时,挤出机电流下降,薄膜的透光率增加,雾度降低;LLDPE含量为60%时,挤出机电流未变而产量提高,薄膜的透光率和雾度变化不大;继续增加LLDPE比例时,挤出机电流和雾度增加。薄膜的拉伸性能随LLDPE比例增大显著提高,且纵横向的取向度变小。