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    • 145. 发明申请
      US20110190435A1 METHOD OF PRODUCING NANO-SCALED GRAPHENE AND INORGANIC PLATELETS AND THEIR NANOCOMPOSITES 有权
    • METHOD OF PRODUCING NANO-SCALED GRAPHENE AND INORGANIC PLATELETS AND THEIR NANOCOMPOSITES
    • 生产纳米尺度石墨和无机薄板及其纳米复合材料的方法
    • US20110190435A1
    • 2011-08-04
    • US12983947
    • 2011-01-04
    • Bor Z. Jang , Aruna Zhamu
    • Bor Z. Jang , Aruna Zhamu
    • C08K3/20 , C09K3/00 , B82Y30/00
    • B82Y40/00 , B82Y30/00 , C01B32/15 , C01B32/22 , C01B32/225 , C01B32/23 , C01B33/40 , C01B2204/04 , C01P2004/24 , C09C1/44 , C09C1/46
    • Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) 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 method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. 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.
    • 公开了一种剥离层状材料（例如石墨和氧化石墨）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）在高于卤素的熔点或升华点的第一温度下以足够的蒸汽压将粉末形式的层状材料经受卤素蒸气，持续足以引起卤素分子 穿透层状材料的层间空间，形成稳定的卤素插层化合物; 和（b）在高于卤素沸点的第二温度下加热卤素插层的化合物，使得驻留在层间空间中的卤素原子或分子剥离层状材料以产生血小板。 或者，步骤（a）不是加热，而是将卤素插入化合物分散在液体介质中的步骤，该液体介质经过超声波处理以使卤素插层化合物剥离以产生分散在液体介质中的血小板 。 可以容易地捕获和重新使用卤素，从而显着降低卤素对环境的影响。 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。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 147. 发明授权
      US07892514B2 Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites 有权
    • Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites
    • 生产纳米级石墨烯和无机血小板及其纳米复合材料的方法
    • US07892514B2
    • 2011-02-22
    • US11709274
    • 2007-02-22
    • Bor Z. Jang , Aruna Zhamu
    • Bor Z. Jang , Aruna Zhamu
    • C01B31/00
    • B82Y40/00 , B82Y30/00 , C01B32/15 , C01B32/22 , C01B32/225 , C01B32/23 , C01B33/40 , C01B2204/04 , C01P2004/24 , C09C1/44 , C09C1/46
    • Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) 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 method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. 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.
    • 公开了一种剥离层状材料（例如石墨和氧化石墨）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）在高于卤素的熔点或升华点的第一温度下以足够的蒸汽压将粉末形式的层状材料经受卤素蒸气，持续足以引起卤素分子 穿透层状材料的层间空间，形成稳定的卤素插层化合物; 和（b）在高于卤素沸点的第二温度下加热卤素插层的化合物，使得驻留在层间空间中的卤素原子或分子剥离层状材料以产生血小板。 或者，步骤（a）不是加热，而是将卤素插入化合物分散在液体介质中的步骤，该液体介质经过超声波处理以使卤素插层化合物剥离以产生分散在液体介质中的血小板 。 可以容易地捕获和重新使用卤素，从而显着降低卤素对环境的影响。 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。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 148. 发明授权
      US07785492B1 Mass production of nano-scaled platelets and products 有权
    • Mass production of nano-scaled platelets and products
    • 大规模生产纳米级血小板和产品
    • US07785492B1
    • 2010-08-31
    • US11526489
    • 2006-09-26
    • Bor Z. Jang , Aruna Zhamu , Jiusheng Guo
    • Bor Z. Jang , Aruna Zhamu , Jiusheng Guo
    • C04B14/00 , C04B16/00 , C04B18/00 , C04B20/06 , C01B31/04
    • B82Y40/00 , B82Y30/00 , C01B32/19 , C01B32/22 , C01B32/23 , C01B33/40 , C01B2204/02 , C01B2204/04
    • 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.
    • 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材料。 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。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
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