Method of producing uniform polymer beads of various sizes
    4.
    发明授权
    Method of producing uniform polymer beads of various sizes 有权
    制备各种尺寸的均匀聚合物珠粒的方法

    公开(公告)号:US09415530B2

    公开(公告)日:2016-08-16

    申请号:US13345244

    申请日:2012-01-06

    摘要: Speriodal polymer beads having a uniform size are prepared by polymerizing uniformly sized monomer droplets formed by dispersing a polymerizable monomer phase over a cross-flow membrane into an aqueous phase. A shear force is provided at a point of egression of the polymerizable monomer phase into the aqueous phase, the direction of shear substantially perpendicular to the direction of egression of the monomer phase. The polymer beads can be employed in applications where beads having uniform diameters of 10 to 180 μm are useful.

    摘要翻译: 通过聚合通过将交联流膜上的可聚合单体相分散到水相中形成的均匀尺寸的单体液滴来制备具有均匀尺寸的非周期聚合物珠粒。 在可聚合单体相进入水相的过程中提供剪切力,剪切方向基本上垂直于单体相的出现方向。 聚合物珠可用于具有10至180μm均匀直径的珠粒的应用中。

    METHOD FOR PRODUCING SUPERFICIALLY CRYSTALLINE SPHERICAL GRANULES BY MEANS OF AIR-COOLED HOT DIE FACE PELLETIZING AND APPARATUS FOR CARRYING OUT THE METHOD
    5.
    发明申请
    METHOD FOR PRODUCING SUPERFICIALLY CRYSTALLINE SPHERICAL GRANULES BY MEANS OF AIR-COOLED HOT DIE FACE PELLETIZING AND APPARATUS FOR CARRYING OUT THE METHOD 审中-公开
    通过空气冷却的热面加热制造超细晶体球形颗粒的方法和实施方法的装置

    公开(公告)号:US20160193771A1

    公开(公告)日:2016-07-07

    申请号:US15068285

    申请日:2016-03-11

    摘要: A method and a device for producing superficially crystalline spherical granules by means of air-cooled hot die face pelletizing in a cutting chamber. A crystallizable plastic material can be melted and then extruded through a perforated plate. During the air-cooled hot die face pelletizing, at least one cutting blade can be moved relative to the perforated plate. The perforated plate can be temperature-controlled while maintaining a viscosity of the plastic material within nozzle openings. A superficial cooling to a crystal nucleation temperature of the dry-cut granules is performed by means of a centripetally inflowing process gas. The crystal nucleation temperature is below an optimum crystal growth temperature and above a glass transition temperature. By controlling the quantity of process gas at an adiabatic temperature, an average granule temperature is maintained in a range of an optimum crystal growth temperature.

    摘要翻译: 一种用于通过在切割室中的空气冷却热模面造粒制备表面结晶球形颗粒的方法和装置。 可结晶的塑料材料可以熔化,然后通过多孔板挤出。 在风冷的热模面造粒期间,至少一个切割刀片可以相对于多孔板移动。 多孔板可以进行温度控制,同时保持塑料材料在喷嘴开口内的粘度。 通过向心流入的工艺气体对干馏颗粒的晶体成核温度进行表面冷却。 晶体成核温度低于最佳晶体生长温度并高于玻璃化转变温度。 通过控制处理气体在绝热温度下的数量,将平均颗粒温度保持在最佳晶体生长温度的范围内。

    Process For Preparing Polymeric Fibers Comprising Thermotropic Liquid Crystalline Polymer And Carbon Nanotubes
    8.
    发明申请
    Process For Preparing Polymeric Fibers Comprising Thermotropic Liquid Crystalline Polymer And Carbon Nanotubes 审中-公开
    制备包含热致液晶聚合物和碳纳米管的聚合物纤维的方法

    公开(公告)号:US20140080993A1

    公开(公告)日:2014-03-20

    申请号:US13623410

    申请日:2012-09-20

    申请人: FIBRASTIC LIMITED

    IPC分类号: B29B9/06 C08G63/06 B82Y30/00

    摘要: The invention relates to polymeric fibers and a process of preparing polymeric fibers. The process comprises the steps of synthesizing a composite of thermotropic liquid crystalline polymer (TLCP) comprising multi-walled carbon nanotubes (MWNTs), and spinning the composite to form composite fibers. Specifically, the MWNTs are incorporated at a very low concentration. It is demonstrated that the as-spun TLCP/MWNTs composite fibers demonstrated significantly enhanced mechanical properties as compared with the control TLCP fibers without MWNTs. Fibers having 0.3 wt % MWNTs (C-3) demonstrated an increase of tensile modulus and strength by 38% and 32%, respectively, when compared with the control TLCP fiber without MWNTs.

    摘要翻译: 本发明涉及聚合物纤维和制备聚合物纤维的方法。 该方法包括合成包含多壁碳纳米管(MWNT)的热致液晶聚合物(TLCP)的复合材料的步骤,以及纺丝复合材料以形成复合纤维。 具体地说,MWNT以非常低的浓度掺入。 证明与没有MWNT的对照TLCP纤维相比,初纺TLCP / MWNT复合纤维显示出显着增强的机械性能。 与不含MWNT的对照TLCP纤维相比,具有0.3重量%MWNT(C-3)的纤维的拉伸模量和强度分别增加了38%和32%。

    POLYMER PELLETIZATION VIA MELT FRACTURE
    10.
    发明申请
    POLYMER PELLETIZATION VIA MELT FRACTURE 有权
    聚合物通过熔体破碎

    公开(公告)号:US20130234357A1

    公开(公告)日:2013-09-12

    申请号:US13787490

    申请日:2013-03-06

    IPC分类号: B29C47/00

    摘要: Polymer pellets are formed using air to influence the separation of polymer from a polymer melt. In accordance with one or more embodiments, a polymer material is extruded through a nozzle to form a polymer melt extending from the nozzle. A non-uniform thickness is generated in the polymer melt using a gas or gasses to apply a drag force to the polymer melt. This drag force reduces a thickness of a portion of the polymer melt adjacent the nozzle, and the polymer melt is fractured into discrete droplets at the reduced thickness. The discrete droplets are then solidified to form pellets.

    摘要翻译: 使用空气形成聚合物颗粒以影响聚合物与聚合物熔体的分离。 根据一个或多个实施例,聚合物材料通过喷嘴挤出以形成从喷嘴延伸的聚合物熔体。 使用气体或气体在聚合物熔体中产生不均匀的厚度,以向聚合物熔体施加拖曳力。 该牵引力减小了邻近喷嘴的聚合物熔体的一部分的厚度,并且聚合物熔体在减小的厚度处被分裂成离散的液滴。 然后将离散的液滴固化以形成颗粒。