Heterogeneous foam materials
    7.
    发明授权
    Heterogeneous foam materials 失效
    不均匀泡沫材料

    公开(公告)号:US5869171A

    公开(公告)日:1999-02-09

    申请号:US87169

    申请日:1998-05-29

    Abstract: The present invention relates to a HIPE-derived heterogeneous polymeric foam structure of interconnected open-cells, wherein the foam structure has at least two distinct regions. Such heterogeneous foams have various applications, such as energy and fluid absorption, insulation, and filtration.The invention further relates to a heterogeneous absorbent polymeric foam that, upon contact with aqueous fluids (in particular body fluids such as urine and blood), can acquire, distribute, and store these fluids.The foams of the invention have at least two distinct regions having different density, polymer composition, surface properties, and/or microcellular morphology.The invention further relates to a process for obtaining the heterogeneous foams by polymerizing a high internal phase water-in-oil emulsion, or HIPE. In one aspect, the process utilizes at least two distinct HIPEs, with each emulsion having a relatively small amount of an oil phase and a relatively greater amount of a water phase.

    Abstract translation: 本发明涉及相互连接的开孔的HIPE衍生的多相聚合物泡沫结构,其中泡沫结构具有至少两个不同的区域。 这种不均匀的泡沫具有各种应用,例如能量和流体吸收,绝缘和过滤。 本发明还涉及一种非均相吸收聚合物泡沫,其在与含水流体(特别是体液如尿液和血液)接触时可以获得,分配和储存这些流体。 本发明的泡沫体具有至少两个具有不同密度,聚合物组成,表面性质和/或微孔形态的不同区域。 本发明还涉及通过聚合高内相油包水乳液或HIPE获得异质泡沫的方法。 在一个方面,该方法利用至少两种不同的HIPE,每种乳液具有相对少量的油相和相对较大量的水相。

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