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    MASS PRODUCTION OF NANO-SCALED PLATELETS AND PRODUCTS
    77.
    发明申请
    MASS PRODUCTION OF NANO-SCALED PLATELETS AND PRODUCTS 有权
    大规模生产纳米鳞片和产品

    公开(公告)号：US20100222482A1

    公开(公告)日：2010-09-02

    申请号：US11526489

    申请日：2006-09-26

    申请人： Bor Z. Jang ,  Aruna Zhamu ,  Jiusheng Guo

    发明人： Bor Z. Jang ,  Aruna Zhamu ,  Jiusheng Guo

    IPC分类号： C08K3/20 ,  C08K3/34 ,  C01B31/04 ,  C01B19/04 ,  C01B33/26

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/19 ,  C01B32/22 ,  C01B32/23 ,  C01B33/40 ,  C01B2204/02 ,  C01B2204/04

    摘要： Disclosed is a process for exfoliating a layered material to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The process comprises: (a) charging a layered material to an intercalation chamber comprising a gaseous environment at a first temperature and a first pressure sufficient to cause gas species to penetrate into the interstitial space between layers of the layered material, forming a gas-intercalated layered material; and (b) operating a discharge valve to rapidly eject the gas-intercalated layered material through a nozzle into an exfoliation zone at a second pressure and a second temperature, allowing gas species residing in the interstitial space to exfoliate the layered material to produce the platelets. The gaseous environment preferably contains only environmentally benign gases that are reactive (e.g., oxygen) or non-reactive (e.g., noble gases) with the layered material. The process can additionally include dispersing the platelets in a matrix material to form a nanocomposite. The process also can include an additional process of re-compressing the nana-scaled platelets into a product such as a flexible graphite sheet.

    摘要翻译： 公开了一种剥离层状材料以产生厚度小于100nm，通常小于10nm，通常在0.34nm和1.02nm之间的纳米级片晶的方法。 该方法包括：（a）在第一温度和足以使气体物质渗入层状材料层之间的间隙空间的第一温度和第一压力下将分层材料装入包含气态环境的嵌入室，形成气体插入 分层材料; 和（b）操作排出阀，以便在第二压力和第二温度下通过喷嘴将气体插入的层状材料快速喷射到剥离区域中，允许驻留在间隙空间中的气体物质剥离层状材料以产生血小板 。 气态环境优选地仅含有与层状材料具有反应性（例如氧）或非反应性（例如惰性气体）的环境友好气体。 该方法还可以包括将血小板分散在基质材料中以形成纳米复合物。 该方法还可以包括将纳米级血小板重新压缩到诸如柔性石墨片的产品中的另外的过程。

    Low-temperature method of producing nano-scaled graphene platelets and their nanocomposites
    79.
    发明申请
    Low-temperature method of producing nano-scaled graphene platelets and their nanocomposites 有权
    生产纳米级石墨烯血小板及其纳米复合材料的低温方法

    公开(公告)号：US20080258359A1

    公开(公告)日：2008-10-23

    申请号：US11787442

    申请日：2007-04-17

    申请人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

    发明人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

    IPC分类号： B28B5/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/15 ,  C01B32/184 ,  C01B32/22 ,  C01B32/225 ,  C01B32/23

    摘要： A method of exfoliating a layered material to produce separated nano-scaled platelets having a thickness smaller than 100 nm. The method comprises: (a) providing a graphite intercalation compound comprising a layered graphite containing expandable species residing in an interlayer space of the layered graphite; (b) exposing the graphite intercalation compound to an exfoliation temperature lower than 650° C. for a duration of time sufficient to at least partially exfoliate the layered graphite without incurring a significant level of oxidation; and (c) subjecting the at least partially exfoliated graphite to a mechanical shearing treatment to produce separated platelets. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

    摘要翻译： 剥离层状材料以产生厚度小于100nm的分离的纳米尺寸血小板的方法。 该方法包括：（a）提供石墨插层化合物，其包含层状石墨，该层状石墨包含位于层状石墨的层间空间中的可膨胀物质; （b）将石墨插层化合物暴露于低于650℃的剥离温度持续足够的时间以足以至少部分地剥离层状石墨而不引起显着水平的氧化; 和（c）使至少部分脱落的石墨经受机械剪切处理以产生分离的血小板。 该方法还可以包括将血小板分散在聚合物或单体溶液或悬浮液中作为前体步骤的纳米复合制备的步骤。