Members having a multiaxially oriented coating of thermotropic liquid
crystalline polymer and method and apparatus for producing such members
    3.
    发明授权
    Members having a multiaxially oriented coating of thermotropic liquid crystalline polymer and method and apparatus for producing such members 失效
    具有多轴取向的热致液晶聚合物涂层的部件及其制造方法和装置

    公开(公告)号:US5882741A

    公开(公告)日:1999-03-16

    申请号:US590565

    申请日:1996-01-26

    摘要: Coatings of multiaxially oriented Thermotropic Liquid Crystalline Polymer (TLCP) are provided to elongated members. Suitable members include glass rods, glass fibers, pipes, beams, and other oval or polygonal members having an essentially regular cross-section. Members of ceramic, plastic, or metal can also be coated. This extrusion is performed using a die having inner and outer mandrels capable of rotating in opposite directions. Concentricity between inner and outer mandrels of the die is maintained to assure uniform coating thickness. In order to produce a high level of multiaxial orientation at lower die rotational speeds, the die design may include spiraling feed zones on one or both facing surfaces of the inner and outer mandrels. The application of the multiaxially oriented coating provides superior impermeability to water vapor and oxygen, and increased strength to the elongated member in the axial direction.

    摘要翻译: 多轴取向热致液晶聚合物(TLCP)的涂层被提供给细长部件。 合适的构件包括玻璃棒,玻璃纤维,管,梁和具有基本上规则横截面的其它椭圆形或多边形构件。 陶瓷,塑料或金属的成员也可以涂覆。 使用具有能够沿相反方向旋转的内心轴和外心轴的模具进行该挤出。 维持模具的内心轴和外心轴之间的同心度,以确保均匀的涂层厚度。 为了在较低的模具转速下产生高水平的多轴取向,模具设计可以包括在内心轴和外心轴的一个或两个相对表面上的螺旋进给区。 多轴取向涂层的应用提供了对水蒸气和氧的优异的不渗透性,并且在轴向方向上提高了细长构件的强度。

    Coextrusion of liquid crystal polymers and thermoplastic polymers
    4.
    发明授权
    Coextrusion of liquid crystal polymers and thermoplastic polymers 有权
    液晶聚合物和热塑性聚合物的共挤出

    公开(公告)号:US6045737A

    公开(公告)日:2000-04-04

    申请号:US136491

    申请日:1998-08-19

    摘要: A flat and nearly mechanically isotropic polymer film or sheet, or a tube, can be formed by laminating two or more films, preferably by coextrusion of a liquid crystal polymer film and a thermoplastic polymer film. A liquid crystal polymer layer may be combined with one or more thermoplastic polymer layer in various arrangements. The liquid crystal, and possibly the thermoplastic as well, may have a controlled molecular orientation. The film may be formed by passing a polymer through a set of two or three tubular rotors which are concentric and have facing surfaces which define inner and outer annular polymer flow channels.

    摘要翻译: 可以通过层叠两个或更多个膜,优选通过共挤出液晶聚合物膜和热塑性聚合物膜来形成扁平且几乎机械各向同性的聚合物膜或片或管。 液晶聚合物层可以与一种或多种热塑性聚合物层以各种布置组合。 液晶以及可能的热塑性材料也可以具有受控的分子取向。 膜可以通过使聚合物通过一组两个或三个管状转子而形成,这两个或三个管状转子是同心的并且具有限定内部和外部环形聚合物流动通道的相对表面。

    Film-based composite structures for ultralightweight SDI systems
    6.
    发明授权
    Film-based composite structures for ultralightweight SDI systems 失效
    用于超轻量级SDI系统的薄膜复合结构

    公开(公告)号:US5443884A

    公开(公告)日:1995-08-22

    申请号:US834283

    申请日:1992-02-14

    摘要: Film-based composite structures meet the requirements of highly weight-efficient SDI space-based systems. These structures are rigid, lightweight, dimensionally stable, and possess a high degree of structural damping. Thin-walled structures (wall thickness less than 50 .mu.) made from self-reinforced ordered-polymer films overcome drawbacks of fiber-reinforced composites, and provide resistance to microcracking, ply delamination and impact. They have high temperature capability (over 300.degree. C.), low temperature (cryogenic) capability and the capability for hardening and survivability. The modulus and dimensional stability of film-based ultralightweight honeycomb sandwich structures is better than currently possible with aluminum or fiber-reinforced composite materials. Other thin-walled structures such as tension web beams and thin facesheets also show similar stiffness-to-weight advantages over current materials.

    摘要翻译: 基于薄膜的复合结构满足高度重量的SDI空间系统的要求。 这些结构是刚性的,重量轻的,尺寸稳定的,并且具有高度的结构阻尼。 由自增强有序聚合物膜制成的薄壁结构(壁厚小于50微米)克服了纤维增强复合材料的缺点,提供了抗裂纹,层压分层和冲击的能力。 它们具有高温能力(超过300℃),低温(低温)能力和硬化和生存能力。 薄膜超轻型蜂窝夹层结构的模量和尺寸稳定性优于铝或纤维增强复合材料。 其他薄壁结构,例如张力腹板梁和薄面板,也显示出与现有材料相似的刚度与重量的优点。

    Liquid crystalline polymer capacitors
    8.
    发明授权
    Liquid crystalline polymer capacitors 失效
    液晶聚合物电容器

    公开(公告)号:US5995361A

    公开(公告)日:1999-11-30

    申请号:US781393

    申请日:1997-01-10

    IPC分类号: H01G4/18 H01G4/32

    摘要: This invention relates in general to capacitors including one or more layers of dielectric material wherein at least one of the layers including a multiaxially oriented lyotropic liquid crystalline polymer (LCP) film. The present invention also provides lyotropic LCPs films having less than 0.5% residual ionic contaminants and a method of preparing such films and capacitors including such films. In preferred embodiments, the invention further provides a capacitor wherein the liquid crystalline polymer film has less than 0.5% residual ionic contaminants.

    摘要翻译: 本发明一般涉及包括一层或多层介电材料的电容器,其中至少一层包括多轴取向溶致液晶聚合物(LCP)膜。 本发明还提供了具有小于0.5%的残余离子污染物的溶致LCP膜,以及制备这种膜和电容器的方法,包括这种膜。 在优选实施例中,本发明还提供一种电容器,其中液晶聚合物膜具有小于0.5%的残留离子污染物。