POLYETHYLENE FOR SUPERIOR SHEET EXTRUSION THERMOFORMING PERFORMANCE
    11.
    发明申请
    POLYETHYLENE FOR SUPERIOR SHEET EXTRUSION THERMOFORMING PERFORMANCE 审中-公开
    高分子挤出成型性能的聚乙烯

    公开(公告)号:US20160325486A1

    公开(公告)日:2016-11-10

    申请号:US15149985

    申请日:2016-05-09

    Abstract: A method of forming a thermoformed article may include melt extruding polyethylene to form an extruded sheet. The rheological breadth parameter of the polyethylene may change by no more than about 5% after extrusion relative to the rheological breadth parameter of the polyethylene prior to extrusion. The extruded sheet may be thermoformed within a mold to form the thermoformed article. During thermoforming, the extruded sheet may be subjected to solid-state stretching in one or more directions. The thermoformed article may be retrieved from the mold. The polyethylene may have a rheological breadth parameter of from 0.20 to 0.40, a multimodal molecular weight distribution, a polydispersity (Mw/Mn) of from 5 to 18, a density ranging from 0.940 to 0.970 g/cc, may exhibit tensile strain-hardening, or combinations thereof.

    Abstract translation: 形成热成型制品的方法可以包括熔融挤出聚乙烯以形成挤出片材。 在挤出之前,聚乙烯的流变宽度参数相对于聚乙烯的流变宽度参数在挤出后可以改变不超过约5%。 挤出的片材可以在模具内热成型以形成热成型制品。 在热成型期间,挤压片材可以在一个或多个方向上进行固态拉伸。 可以从模具中取出热成型制品。 聚乙烯可以具有0.20至0.40的流变宽度参数,多峰分子量分布,多分散性(Mw / Mn)为5至18,密度范围为0.940至0.970g / cc,可以表现出拉伸应变硬化 ,或其组合。

    Depolymerization of Plastic Materials
    13.
    发明申请
    Depolymerization of Plastic Materials 审中-公开
    塑料材料的解聚

    公开(公告)号:US20150210611A1

    公开(公告)日:2015-07-30

    申请号:US14586521

    申请日:2014-12-30

    Abstract: A styrene monomer reclamation process and system is described. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream.

    Abstract translation: 描述了苯乙烯单体回收过程和系统。 苯乙烯单体回收方法包括提供废塑料。 废塑料包括苯乙烯聚合物。 废塑料形成聚合物颗粒。 将至少一部分聚合物颗粒溶解在溶剂中以形成聚合物流。 溶解的聚合物颗粒被解聚以形成苯乙烯单体流。

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