Recycled Polymeric Composite Crossties and Methods of Manufacture
    1.
    发明申请
    Recycled Polymeric Composite Crossties and Methods of Manufacture 审中-公开
    回收聚合物复合材料及其制造方法

    公开(公告)号:US20070212437A1

    公开(公告)日:2007-09-13

    申请号:US11747840

    申请日:2007-05-11

    IPC分类号: B29C47/08

    摘要: A polymeric composite useful for producing large shaped articles such as railroad crossties comprises a filler component having minimal reinforcing/structural characteristics; and a polymer blend including at least one polymeric stiffening component, at least one polymeric density component, and at least one polymeric flexibility component. The polymer blend can include post-consumer recycled thermoplastic polymers. To produce the composite, a multistage extruder brings a blend of polymer and filler materials to an extrudable threshold without completely liquefying the polymer blend. The extruded blend is cooled within a mold to form a shaped article such as a recycled composite crosstie. Exemplary recycled composite mixtures may include composite polymer materials, such as, polypropylene, High Density Polyethylene (HDPE), High Molecular Weight Polyethylene (HMW), Low Density Polyethylene (LDPE), ABS, Ethylene Vinyl Acetate (EVA), Linear Low Density Polyethylene (LLDPE), and combinations of these polymers. The filler may include talc, fly ash, potash, and combinations of these or other mineral powder products.

    摘要翻译: 用于生产大型成形制品如铁路十字架的聚合物复合材料包括具有最小增强/结构特性的填料组分; 以及包含至少一种聚合物硬化组分,至少一种聚合物密度组分和至少一种聚合物柔性组分的聚合物共混物。 聚合物共混物可以包括消费后回收的热塑性聚合物。 为了生产复合材料,多级挤出机将聚合物和填料材料的混合物带入可挤压的阈值,而不会完全液化聚合物共混物。 将挤出的共混物在模具内冷却以形成成型制品,例如再循环的复合材料。 示例性的再循环复合材料混合物可以包括复合聚合物材料,例如聚丙烯,高密度聚乙烯(HDPE),高分子量聚乙烯(HMW),低密度聚乙烯(LDPE),ABS,乙烯乙酸乙烯酯(EVA),线性低密度聚乙烯 (LLDPE),以及这些聚合物的组合。 填料可以包括滑石,飞灰,钾盐,以及这些或其它矿物粉末产品的组合。

    Recycled polymeric composite crossties and methods of manufacture
    3.
    发明申请
    Recycled polymeric composite crossties and methods of manufacture 审中-公开
    再生聚合物复合材料及其制造方法

    公开(公告)号:US20050031848A1

    公开(公告)日:2005-02-10

    申请号:US10914894

    申请日:2004-08-09

    摘要: A polymeric composite useful for producing large shaped articles such as railroad crossties comprisesa filler component having minimal reinforcing/structural characteristics; and a polymer blend including at least one polymeric stiffening component, at least one polymeric density component, and at least one polymeric flexibility component. The polymer blend can include post-consumer recycled thermoplastic polymers. To produce the composite, a multistage extruder brings a blend of polymer and filler materials to an extrudable threshold without completely liquefying the polymer blend. The extruded blend is cooled within a mold to form a shaped article such as a recycled composite crosstie. Exemplary recycled composite mixtures may include composite polymer materials, such as, polypropylene, High Density Polyethylene (HDPE), High Molecular Weight Polyethylene (HMW), Low Density Polyethylene (LDPE), ABS, Ethylene Vinyl Acetate (EVA), Linear Low Density Polyethylene (LLDPE), and combinations of these polymers. The filler may include talc, fly ash, potash, and combinations of these or other mineral powder products.

    摘要翻译: 用于生产大型成型制品例如铁路路口的聚合物复合材料包括具有最小增强/结构特性的填料组分; 以及包含至少一种聚合物硬化组分,至少一种聚合物密度组分和至少一种聚合物柔性组分的聚合物共混物。 聚合物共混物可以包括消费后回收的热塑性聚合物。 为了生产复合材料,多级挤出机将聚合物和填料材料的混合物带入可挤压的阈值,而不会完全液化聚合物共混物。 将挤出的共混物在模具内冷却以形成成型制品,例如再循环的复合材料。 示例性的再循环复合材料混合物可以包括复合聚合物材料,例如聚丙烯,高密度聚乙烯(HDPE),高分子量聚乙烯(HMW),低密度聚乙烯(LDPE),ABS,乙烯乙酸乙烯酯(EVA),线性低密度聚乙烯 (LLDPE),以及这些聚合物的组合。 填料可以包括滑石,飞灰,钾盐,以及这些或其它矿物粉末产品的组合。