Apparatus for forming thermoplastic composite materials
    1.
    发明授权
    Apparatus for forming thermoplastic composite materials 失效
    用于形成热塑性复合材料的装置

    公开(公告)号:US06604927B2

    公开(公告)日:2003-08-12

    申请号:US09813594

    申请日:2001-03-21

    IPC分类号: B29C5314

    摘要: A composite with a thermoplastic matrix and fiber reinforcement is made by rotation of an exit die about a roving of continuous fiber in the presence of a thermoplastic melt. The rotation causes opposing inner and outer helical flow conditions which reduce the melt viscosity of the polymer by shear thinning while dragging and directing the polymer into the fiber roving thereby wetting and dispersing the fiber. A composite structure is formed with a polymer rich skin and a core region of unidirectionally aligned polymer and fiber. The polymeric skin is composed of helically aligned polymer chains which are coiled by the rotation around the core to compress the core region and enhance fiber wet out.

    摘要翻译: 具有热塑性基质和纤维增强材料的复合材料通过在热塑性熔体的存在下围绕连续纤维粗纱的出口模具旋转而制成。 旋转引起相反的内部和外部螺旋流动条件,其通过剪切变稀而降低聚合物的熔体粘度,同时将聚合物拖曳并引导到纤维粗纱中,从而润湿和分散纤维。 复合结构形成有富含聚合物的皮肤和单向排列的聚合物和纤维的核心区域。 聚合物皮肤由螺旋排列的聚合物链组成,其通过围绕芯的旋转而卷绕以压缩芯部区域并增强纤维的润湿。

    Conductive long fiber polyvinyl chloride composites
    2.
    发明授权
    Conductive long fiber polyvinyl chloride composites 失效
    导电长纤维聚氯乙烯复合材料

    公开(公告)号:US6162536A

    公开(公告)日:2000-12-19

    申请号:US248530

    申请日:1999-02-10

    摘要: Disclosed is a process for manufacturing a conductive fiber-PVC composite which exhibits less than 10.sup.12 hms/sq. resistivity. The process entails incorporating into rigid PVC under heat and shear, a composite of parallel, conductive long fibers embedded in a PVC-dispersible matrix. The process is conducted under the same melt process conditions encountered in the compound processing of rigid PVC, and the long conductive fibers are incorporated a long fiber composite of substantially parallel fibers embedded in a PVC dispersible matrix. The pellets comprise from about 20% to 80% by weight of conductive fiber and 80% to 20% PVC-dispersible thermoplastic.

    摘要翻译: 公开了一种制造导电纤维 - PVC复合材料的方法,其表现出小于1012hms / sq。 电阻率。 该过程需要在热和剪切下并入刚性PVC,这是嵌入PVC可分散基质中的平行导电长纤维的复合材料。 该方法在刚性PVC的复合加工中遇到的相同的熔融工艺条件下进行,并且长的导电纤维包含嵌入PVC可分散基质中的基本上平行的纤维的长纤维复合材料。 颗粒包含约20%至80%重量的导电纤维和80%至20%的可分散PVC的热塑性塑料。

    Apparatus and method for forming fiber filled thermoplastic composite
materials
    3.
    发明授权
    Apparatus and method for forming fiber filled thermoplastic composite materials 失效
    用于形成纤维填充的热塑性复合材料的装置和方法

    公开(公告)号:US5176775A

    公开(公告)日:1993-01-05

    申请号:US809221

    申请日:1991-12-16

    摘要: This invention relates to composite materials formed by thermoplastic materials reinforced by fibers, and to methods and apparatus for forming such materials, where the thermoplastic and fiber components are such as to impart to the composite materials enhanced strength as compared with materials made previously to this invention. An important distinguishing characteristic of the disclosure is that advancing heated fiber is directed to move in one direction and while a flow of heated thermoplastic material is directed to move in a direction opposite to and in intimate impregnating enclosure of the advancing heated fiber, so that shear forces arising between the advancing heated fiber and the directed flow of thermoplastic material promote wetting and impregnation of the fiber by the thermoplastic material.

    摘要翻译: 本发明涉及由纤维增强的热塑性材料形成的复合材料,以及用于形成这种材料的方法和装置,其中热塑性和纤维组分与赋予本发明的材料相比具有增强的强度 。 本公开的一个重要的区别特征在于,将加热的纤维推向一个方向移动,同时加热的热塑性材料的流动被引导以在前进加热的纤维的相反和紧密的浸渍外壳的方向上移动,使得剪切 在推进的加热纤维和热塑性材料的定向流之间产生的力促进纤维被热塑性材料润湿和浸渍。

    Thermoplastic composite materials made by rotational shear
    4.
    发明授权
    Thermoplastic composite materials made by rotational shear 失效
    通过旋转剪切制成的热塑性复合材料

    公开(公告)号:US06258453B1

    公开(公告)日:2001-07-10

    申请号:US08933454

    申请日:1997-09-18

    IPC分类号: B32B2712

    摘要: A composite with a thermoplastic matrix and fiber reinforcement is made by rotation of an exit die about a roving of continuous fiber in the presence of a thermoplastic melt. The rotation causes opposing inner and outer helical flow conditions which reduce the melt viscosity of the polymer by shear thinning while dragging and directing the polymer into the fiber roving thereby wetting and dispersing the fiber. A composite structure is formed with a polymer rich skin and a core region of unidirectionally aligned polymer and fiber. The polymeric skin is composed of helically aligned polymer chains which are coiled by the rotation around the core to compress the core region and enhance fiber wet out.

    摘要翻译: 具有热塑性基质和纤维增强材料的复合材料通过在热塑性熔体的存在下围绕连续纤维粗纱的出口模具旋转而制成。 旋转引起相反的内部和外部螺旋流动条件,其通过剪切变稀而降低聚合物的熔体粘度,同时将聚合物拖曳并引导到纤维粗纱中,从而润湿和分散纤维。 复合结构形成有富含聚合物的皮肤和单向排列的聚合物和纤维的核心区域。 聚合物皮肤由螺旋排列的聚合物链组成,其通过围绕芯的旋转而卷绕以压缩芯部区域并增强纤维的润湿。

    Fiber reinforced thermoplastic composite with helical fluted surface and
method of producing same
    5.
    发明授权
    Fiber reinforced thermoplastic composite with helical fluted surface and method of producing same 失效
    具有螺旋槽纹表面的纤维增强热塑复合材料及其制造方法

    公开(公告)号:US5725954A

    公开(公告)日:1998-03-10

    申请号:US528202

    申请日:1995-09-14

    摘要: There is provided an elongate fiber reinforced thermoplastic composite which comprises a multiplicity of filamentary fibers, each extending longitudinally of the composite and a thermoplastic resin matrix impregnating and surrounding the filamentary fibers. The composite has alternating lobes and valleys on its surface defining a fluted cross section. The lobes and valleys extend helically along the longitudinal axis of the composite. In a preferred form of the invention, the filamentary fibers also extend helically along the longitudinal axis of the composite, and desirably, the helical pitch of the filamentary fibers is substantially the same as that of the lobes and valleys. The helical pitch may suitably range from about 1.5 to about 8 inches and the elongate composite may have a diameter of from 0.125 to 8 inches. The fibers may comprise from about 20 to about 80 percent by weight of the composite. The number of fibers in the elongate composite may be within the range of 2,000 to 70,000,000 filaments.

    摘要翻译: 提供了一种细长纤维增强的热塑性复合材料,其包括多个丝状纤维,各自延伸到复合材料的纵向上,以及热塑性树脂基体浸渍并包围丝状纤维。 复合材料在其表面上具有交替的凸起和凹槽,其限定有槽纹的横截面。 裂片和谷沿着复合材料的纵向轴线螺旋延伸。 在本发明的优选形式中,丝状纤维也沿着复合材料的纵向轴线螺旋形延伸,并且理想地,丝状纤维的螺距基本上与叶和谷的螺距相同。 螺旋间距可以适当地在约1.5至约8英寸的范围内,并且细长复合材料可具有0.125至8英寸的直径。 纤维可以占复合材料的约20至约80重量%。 细长复合材料中的纤维数量可以在2,000至70000,000丝的范围内。

    Apparatus and method for forming fiber filled thermoplastic composite
materials
    6.
    发明授权
    Apparatus and method for forming fiber filled thermoplastic composite materials 失效
    用于形成纤维填充的热塑性复合材料的装置和方法

    公开(公告)号:US5447793A

    公开(公告)日:1995-09-05

    申请号:US4

    申请日:1993-01-04

    摘要: This invention relates to fiber reinforced composite materials, and to methods and apparatus for forming such materials. The apparatus includes an impregnation chamber having an elongate impregnation passageway with an entrance end and an exit end, means for supplying a polymer material to said impregnation chamber, and means for advancing continuous filament fibers into and through said impregnation chamber, entering through said entrance end and exiting through said exit end, so that the polymer material is immersed in said polymer material. Shear inducing means is mounted in said impregnation chamber and cooperates with said fibers for imparting shear to the polymer material as it contacts the advancing fibers to enhance the wetting and impregnation of the fibers by the polymer material.

    摘要翻译: 本发明涉及纤维增强复合材料,以及用于形成这种材料的方法和装置。 所述设备包括具有入口端和出口端的细长浸渍通道的浸渍室,用于向所述浸渍室供应聚合物材料的装置,以及将连续长丝纤维进入并穿过所述浸渍室的装置,通过所述入口端进入 并通过所述出口端离开,使得聚合物材料浸入所述聚合物材料中。 剪切诱导装置安装在所述浸渍室中并与所述纤维配合,以在与聚合物材料接触时对剪切进行剪切,以增强聚合物材料对纤维的润湿和浸渍。