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    • 21. 发明申请
    • Fiber pellets, method of making, and use in making fiber reinforced polypropylene composites
    • 纤维颗粒,制造方法和用于制造纤维增强聚丙烯复合材料
    • US20090130443A1
    • 2009-05-21
    • US12291897
    • 2008-11-14
    • Arnold Lustiger
    • Arnold Lustiger
    • B32B5/02C08L67/02C08L77/00C08L33/20B29B9/06C08K5/10C08L23/20C08L23/12
    • C08L23/02B29B9/06B29B9/14B29K2023/12C08J5/046C08J2323/12C08L23/04C08L23/10C08L23/16C08L23/20C08L33/20C08L67/02C08L77/00C08L91/06C08L2203/12Y10T428/2913Y10T428/2964Y10T428/2967Y10T428/298C08L2666/06C08L2666/02
    • The present disclosure is directed generally to synthetic organic fiber pellets, methods for making such pellets, and methods of using such pellets for making fiber reinforced polypropylene composite resins. The synthetic organic fiber pellets include at least 80 wt % of a synthetic organic fiber chosen from polyalkylene terephthalates, polyalkylene naphthalates, polyamides, polyolefins, polyacrylonitrile, and combinations thereof, and from 2 to 20 wt % of one or more waxes. The synthetic organic fiber pellets are produced using a pelleting press process. Also provided is a method for making fiber reinforced polypropylene composite pellets including feeding into a compounding extruder at least 25 wt % polypropylene based polymer, from 5 to 60 wt % of synthetic organic fiber in the form of the synthetic organic fiber pellets, and from 0 to 60 wt % inorganic filler; extruding the polypropylene based resin, the fiber pellets, and the inorganic filler through the compounding extruder to form a fiber reinforced polypropylene composite melt; cooling the fiber reinforced polypropylene composite melt to form a solid fiber reinforced polypropylene composite; and pelletizing the solid fiber reinforced polypropylene composite to form fiber reinforced polypropylene composite pellets; wherein an article molded from the composite pellets has a flexural modulus of at least 2.07 GPa and exhibits ductility during instrumented impact testing. Articles molded from the fiber reinforced polypropylene composite pellets find application as automotive parts, household appliance parts, or boat hulls.
    • 本公开一般涉及合成有机纤维颗粒,制备这种颗粒的方法,以及使用这种颗粒制造纤维增强聚丙烯复合树脂的方法。 合成有机纤维颗粒包括选自聚对苯二甲酸亚烷基酯,聚萘二甲酸亚烷基酯,聚酰胺,聚烯烃,聚丙烯腈及其组合的合成有机纤维的至少80重量%,以及2-20重量%的一种或多种蜡。 合成有机纤维颗粒使用造粒机制造。 还提供了一种制造纤维增强聚丙烯复合颗粒的方法,其包括将合成有机纤维颗粒形式的至少25重量%的聚丙烯基聚合物,5至60重量%的合成有机纤维和0 至60重量%的无机填料; 通过配混挤出机挤出聚丙烯基树脂,纤维颗粒和无机填料,以形成纤维增强聚丙烯复合材料; 冷却纤维增强聚丙烯复合材料,形成固体纤维增强聚丙烯复合材料; 并将固体纤维增强聚丙烯复合材料造粒,形成纤维增强聚丙烯复合颗粒; 其中由所述复合颗粒模制的制品具有至少2.07GPa的弯曲模量,并且在仪表式冲击试验期间具有延展性。 由纤维增强聚丙烯复合颗粒成型的制品可用作汽车零件,家用电器零件或船体。
    • 30. 发明申请
    • Methods for making fiber reinforced polystyrene composites
    • 制造纤维增强聚苯乙烯复合材料的方法
    • US20080081876A1
    • 2008-04-03
    • US11542519
    • 2006-10-03
    • Arnold LustigerWalter T. Matuszek
    • Arnold LustigerWalter T. Matuszek
    • C08F8/00
    • C08J5/046C08J2325/04C08K3/013
    • The present invention is directed generally processes for making fiber reinforced polystyrene compositions including from 5 to 50 wt % organic fiber, and from 0 to 60 wt % inorganic filler in a matrix of an atactic polystyrene based polymer. The process includes extrusion compounding the atactic polystyrene based polymer, the organic fiber, and the inorganic filler to form a fiber reinforced polystyrene resin, which is subsequently molded to form an article with a flexural modulus of at least 350,000 psi, and that exhibits ductility during instrumented impact testing. Extrusion compounding processes whereby the organic fiber is continuously fed to the extruder hopper by unwinding from one or more spools, and uniformly dispersing the fiber in the composites via twin screws having a combination of conveying and kneading elements are also disclosed. The extrusion compounding process and the molding process may also be fluidly coupled to provide an in-line compounding and molding process for producing the fiber reinforced polystyrene composites. Colored fiber may also be optionally incorporated into the process to yield articles with a cloth-like appearance. The processes for making fiber reinforced polystyrene compositions are suitable for making molded articles including, but not limited to, household appliances, automotive parts, and boat hulls.
    • 本发明一般涉及一种制备纤维增强聚苯乙烯组合物的方法,所述组合物包含5至50重量%的有机纤维和0至60重量%的无规聚苯乙烯基聚合物基质中的无机填料。 该方法包括挤出混合无规聚苯乙烯基聚合物,有机纤维和无机填料以形成纤维增强聚苯乙烯树脂,随后将其模塑成具有至少350,000psi的挠曲模量的制品,并且其在 仪表化冲击试验。 还公开了挤出复合方法,其中有机纤维通过从一个或多个卷轴展开而连续地供给到挤出机料斗,并且通过具有输送和捏合元件的组合的双螺杆将纤维均匀地分散在复合材料中。 挤出复合方法和模塑方法也可以流体耦合以提供用于生产纤维增强聚苯乙烯复合材料的在线复合和模塑方法。 有色纤维也可以任选地并入该方法中以产生具有布样外观的制品。 制造纤维增强聚苯乙烯组合物的方法适用于制造模制品,包括但不限于家用电器,汽车部件和船体。