Porous Membrane
    1.
    发明申请
    Porous Membrane 审中-公开
    多孔膜

    公开(公告)号:US20140232033A1

    公开(公告)日:2014-08-21

    申请号:US14181002

    申请日:2014-02-14

    申请人: BHA Altair, LLC

    IPC分类号: B01D67/00

    摘要: A membrane comprises a sheet of expanded polytetrafluoroethylene. The sheet includes a first extrudate made from a first PTFE fine powder resin mixed with processing lubricant at a first lube rate. A second extrudate is made from the first PTFE fine powder resin mixed with processing lubricant at the first lube rate. The first and second extrudates combined into an integrated tape structure that is stretched in first and second directions. The sheet is porous and has a gas permeability of at least 0.1 CFM according to ASTM D737. The sheet has an average Mullen Hydrostatic Burst pressure in the range of 135 psi to 175 psi according to ASTM D751.

    摘要翻译: 膜包括膨胀聚四氟乙烯片。 该片材包括由以第一润滑剂速率与处理润滑剂混合的第一PTFE细粉末树脂制成的第一挤出物。 第二挤出物由以第一润滑剂速率与处理润滑剂混合的第一PTFE细粉末树脂制成。 第一和第二挤出物组合成在第一和第二方向上拉伸的一体化带结构。 该片材是多孔的,并且根据ASTM D737具有至少0.1CFM的气体渗透性。 根据ASTM D751,该片材具有在135psi至175psi范围内的平均Mullen水压突破压力。