PROCESS OF FORMING NANO-COMPOSITES AND NANO-POROUS NON-WOVENS
    4.
    发明申请
    PROCESS OF FORMING NANO-COMPOSITES AND NANO-POROUS NON-WOVENS 审中-公开
    形成纳米复合材料和纳米多孔非织造布的工艺

    公开(公告)号:WO2012044382A1

    公开(公告)日:2012-04-05

    申请号:PCT/US2011/041432

    申请日:2011-06-22

    CPC classification number: D04H1/4382 B82Y30/00

    Abstract: A process for forming a nano-composite including mixing a first and second thermoplastic polymer in a molten state forming a molten polymer blend. The second polymer is soluble in a first solvent and the first polymer is insoluble in the first solvent. The first polymer forms discontinuous regions in the second polymer. Next, the polymer blend is subjected to extensional flow, shear stress, and heat forming nanofibers where less than about 30% by volume of the nanofibers are bonded to other nanofibers. Next the polymer blend with nanofibers is cooled and the first intermediate is formed into a pre-consolidation formation. The pre-consolidation formation is then consolidated causing nanofiber movement, randomization, and at least 70% by volume of the nanofibers to fuse to other nanofibers. According to one aspect, the second intermediate is then subjected to the first solvent to the dissolving away at least a portion of the second polymer.

    Abstract translation: 一种形成纳米复合材料的方法,包括在形成熔融聚合物共混物的熔融状态下混合第一和第二热塑性聚合物。 第二聚合物可溶于第一溶剂,第一聚合物不溶于第一溶剂。 第一聚合物在第二聚合物中形成不连续区域。 接下来,聚合物共混物经受拉伸流动,剪切应力和热成型纳米纤维,其中少于约30体积%的纳米纤维结合到其他纳米纤维。 接下来,将具有纳米纤维的聚合物共混物冷却,并将第一中间体形成预固化地层。 然后固化预固化形成,导致纳米纤维运动,随机化,以及至少70体积%的纳米纤维与其他纳米纤维融合。 根据一个方面,然后使第二中间体经受第一溶剂以溶解至少部分第二聚合物。

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