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公开(公告)号：US07964698B2
公开(公告)日：2011-06-21
申请号：US11935036
申请日：2007-11-05
IPC分类号： C08G73/10
CPC分类号： C08G73/1071 , C08J5/24 , C08J2379/08 , C08L79/08 , C09K19/3814 , C09K19/3823
摘要： The benefits of liquid crystal polymers and polyetherimides are combined in an all-aromatic thermoplastic liquid crystalline polyetherimide. Because of the unique molecular structure, all-aromatic thermotropic liquid crystal polymers exhibit outstanding processing properties, excellent barrier properties, low solubilities and low coefficients of thermal expansion in the processing direction. These characteristics are combined with the strength, thermal, and radiation stability of polyetherimides.
摘要翻译： 液晶聚合物和聚醚酰亚胺的优点在全芳族热塑性液晶聚醚酰亚胺中组合。 由于独特的分子结构，全芳族热致液晶聚合物具有出色的加工性能，优异的阻隔性能，低溶解度和低加工方向的热膨胀系数。 这些特性与聚醚酰亚胺的强度，热和辐射稳定性相结合。
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公开(公告)号：US20090118461A1
公开(公告)日：2009-05-07
申请号：US11935036
申请日：2007-11-05
IPC分类号： C08G73/10
CPC分类号： C08G73/1071 , C08J5/24 , C08J2379/08 , C08L79/08 , C09K19/3814 , C09K19/3823
摘要： The benefits of liquid crystal polymers and polyetherimides are combined in an all-aromatic thermoplastic liquid crystalline polyetherimide. Because of the unique molecular structure, all-aromatic thermotropic liquid crystal polymers exhibit outstanding processing properties, excellent barrier properties, low solubilities and low coefficients of thermal expansion in the processing direction. These characteristics are combined with the strength, thermal, and radiation stability of polyetherimides.
摘要翻译： 液晶聚合物和聚醚酰亚胺的优点在全芳族热塑性液晶聚醚酰亚胺中组合。 由于独特的分子结构，全芳族热致液晶聚合物具有出色的加工性能，优异的阻隔性能，低溶解度和低加工方向的热膨胀系数。 这些特性与聚醚酰亚胺的强度，热和辐射稳定性相结合。
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公开(公告)号：US5694807A
公开(公告)日：1997-12-09
申请号：US316708
申请日：1994-09-29
摘要： A method and apparatus for determining the mass density of a moving filament is provided. The method includes the steps of providing a filament across two supports, tensioning the filament, inducing a vibration into the filament segment between the supports, reinforcing the vibration using an amplified feedback signal, detecting the vibrational frequency data, processing the data using a fast-fourier transform analysis, and then displaying the frequency. The use of the feedback signal results in a self-tuning resonant loop. Open loop versions may also be used. The apparatus includes a base supporting a fixed support and a transducer which in turn supports a moveable support. The transducer vibrates the moveable support transversely to the direction of travel of the filament, thereby inducing a transverse vibrational mode. The output of the transducer is amplified and used to drive a second amplifier to produce a self-tuning resonant loop. In the open loop version a signal generator is used to drive the transducer through a frequency range, during which the amplitude peak is identified.
摘要翻译： 提供了一种用于确定移动细丝的质量密度的方法和装置。 该方法包括以下步骤：在两个支撑件之间提供细丝，拉紧细丝，引起振动到支撑件之间的细丝部分，使用放大的反馈信号加强振动，检测振动频率数据， 傅立叶变换分析，然后显示频率。 使用反馈信号导致自谐振谐振回路。 也可以使用开环版本。 该装置包括支撑固定支撑件的基座和继而支撑可移动支撑件的换能器。 传感器横向振动细长度方向的移动支架，从而引起横向振动模式。 换能器的输出被放大并用于驱动第二放大器以产生自调谐谐振回路。 在开环版本中，信号发生器用于驱动换能器通过频率范围，在该频率范围内识别振幅峰值。
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