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    • 47. 发明申请
    • LEAD ACID BATTERY SEPARATOR WITH IMPROVED ELECTRICAL AND MECHANICAL PROPERTIES
    • 具有改进的电气和机械性能的铅酸电池分离器
    • WO2002095846A1
    • 2002-11-28
    • PCT/US2002/016729
    • 2002-05-23
    • ENTEK INTERNATIONAL LLCPEKALA, Richard, W.
    • PEKALA, Richard, W.
    • H01M2/16
    • H01M2/166C08K3/36H01M2/1653H01M2/1686H01M10/12Y10T428/249953Y10T428/249956Y10T428/249986Y10T428/249991Y10T428/259C08L23/02
    • An oxidation resistant, microporous polyolefin web exhibiting high-strength mechanical and low electrical resistance properties is a solid matrix that includes an ultrahigh molecular weight polyolefin component and a friable precipitated silica component. The ultrahigh molecular weight polyolefin component provides high-strength mechanical properties to the web. The friable precipitated silica component is broken down into predominately discrete silica aggregates dispersed throughout the microporous web to maintain a low electrical resistance in the presence of an electrolyte. In an alternative embodiment, a polyethylene web includes an antioxidant coating that is applied to the separator web following extraction of the majority of the process oils and drying of the extraction fluid from the separator pores. The resultant "sheath" of antioxidant protects the mechanical integrity of the polyethylene separator by suppressing polyethylene degradation.
    • 表现出高强度机械和低电阻性能的抗氧化微孔聚烯烃纤维网是包含超高分子量聚烯烃组分和易碎沉淀二氧化硅组分的固体基质。 超高分子量聚烯烃组分为纤维网提供高强度机械性能。 易碎的沉淀二氧化硅组分被分解成分散在整个微孔纤维网中的主要离散的二氧化硅聚集体,以在电解质存在下保持低电阻。 在替代实施例中,聚乙烯网包括抗氧化剂涂层,其在萃取大部分工艺油并从分离器孔中干燥萃取流体之后施加到隔板网。 所得的抗氧化剂“护套”通过抑制聚乙烯降解来保护聚乙烯隔板的机械完整性。