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    Boron nitride and boron nitride nanotube materials for radiation shielding
    1.
    发明申请
    Boron nitride and boron nitride nanotube materials for radiation shielding 审中-公开
    氮化硼和氮化硼纳米管材料用于辐射屏蔽

    公开(公告)号：US20130119316A1

    公开(公告)日：2013-05-16

    申请号：US13068329

    申请日：2011-05-09

    申请人： Godfrey Sauti ,  Cheol Park ,  Jin Ho Kang ,  Jae-Woo Kim ,  Joycelyn S. Harrison ,  Michael W. Smith ,  Kevin Jordan ,  Sharon E. Lowther ,  Peter T. Lillehei ,  Sheila A. Thibeault

    发明人： Godfrey Sauti ,  Cheol Park ,  Jin Ho Kang ,  Jae-Woo Kim ,  Joycelyn S. Harrison ,  Michael W. Smith ,  Kevin Jordan ,  Sharon E. Lowther ,  Peter T. Lillehei ,  Sheila A. Thibeault

    IPC分类号： G21F1/10

    CPC分类号： G21F1/103 ,  G21F1/00

    摘要： Effective radiation shielding is required to protect crew and equipment in various fields including aerospace, defense, medicine and power generation. Light elements and in particular hydrogen are most effective at shielding against high-energy particles including galactic cosmic rays, solar energetic particles and fast neutrons. However, pure hydrogen is highly flammable, has a low neutron absorption cross-section, and cannot be made into structural components. Nanocomposites containing the light elements Boron, Nitrogen, Carbon and Hydrogen as well dispersed boron nano-particles, boron nitride nanotubes (BNNTs) and boron nitride nano-platelets, in a matrix, provide effective radiation shielding materials in various functional forms. Boron and nitrogen have large neutron absorption cross-sections and wide absorption spectra. The incorporation of boron and nitrogen containing nanomaterials into hydrogen containing matrices provides composites that can effectively shield against neutrons and a wide range of radiation species of all energies without fragmentation and the generation of harmful secondary particles.

    摘要翻译： 需要有效的辐射屏蔽来保护航空航天，国防，医药和发电等各个领域的船员和设备。 轻元素，特别是氢是最有效的屏蔽高能粒子，包括星系宇宙射线，太阳能能粒子和快中子。 然而，纯氢是高度易燃的，具有低的中子吸收横截面，并且不能制成结构部件。 含有轻质元素的纳米复合材料可以提供各种功能形式的有效的辐射屏蔽材料，硼，氮，碳和氢以及分散的硼纳米颗粒，氮化硼纳米管（BNNTs）和氮化硼纳米血小板。 硼和氮具有大的中子吸收截面和宽的吸收光谱。 将含硼和氮的纳米材料掺入含氢基质提供了复合材料，可以有效地屏蔽所有能量的中子和宽范围的辐射种类，而不会产生碎片和产生有害的二次粒子。

    Metallized nanotube polymer composite (MNPC) and methods for making same
    2.
    发明授权
    Metallized nanotube polymer composite (MNPC) and methods for making same 有权
    金属化纳米管聚合物复合材料（MNPC）及其制备方法

    公开(公告)号：US09550870B2

    公开(公告)日：2017-01-24

    申请号：US12313945

    申请日：2008-11-26

    申请人： Cheol Park ,  Joycelyn S. Harrison ,  Negin Nazem ,  Larry Taylor ,  Jin Ho Kang ,  Jae-Woo Kim ,  Godfrey Sauti ,  Peter T. Lillehei ,  Sharon E. Lowther

    发明人： Cheol Park ,  Joycelyn S. Harrison ,  Negin Nazem ,  Larry Taylor ,  Jin Ho Kang ,  Jae-Woo Kim ,  Godfrey Sauti ,  Peter T. Lillehei ,  Sharon E. Lowther

    IPC分类号： C08J7/02 ,  B29C70/88 ,  C08J3/20 ,  C08J7/06 ,  B29K105/16 ,  B82Y30/00

    CPC分类号： C08J7/02 ,  B29C70/882 ,  B29K2105/167 ,  B82Y30/00 ,  C08J3/203 ,  C08J7/06 ,  C08J2379/08 ,  Y02P20/544

    摘要： A novel method to develop highly conductive functional materials which can effectively shield various electromagnetic effects (EMEs) and harmful radiations. Metallized nanotube polymer composites (MNPC) are composed of a lightweight polymer matrix, superstrong nanotubes (NT), and functional nanoparticle inclusions. MNPC is prepared by supercritical fluid infusion of various metal precursors (Au, Pt, Fe, and Ni salts), incorporated simultaneously or sequentially, into a solid NT-polymer composite followed by thermal reduction. The infused metal precursor tends to diffuse toward the nanotube surface preferentially as well as the surfaces of the NT-polymer matrix, and is reduced to form nanometer-scale metal particles or metal coatings. The conductivity of the MNPC increases with the metallization, which provides better shielding capabilities against various EMEs and radiations by reflecting and absorbing EM waves more efficiently. Furthermore, the supercritical fluid infusion process aids to improve the toughness of the composite films significantly regardless of the existence of metal.

    摘要翻译： 一种开发高导电功能材料的新方法，可有效屏蔽各种电磁效应（EME）和有害辐射。 金属化纳米管聚合物复合材料（MNPC）由轻质聚合物基体，超细纳米管（NT）和功能性纳米粒子夹杂物组成。 MNPC通过将各种金属前体（Au，Pt，Fe和Ni盐）的超临界流体输注同时或依次并入固体NT-聚合物复合材料中，然后热还原制备。 注入的金属前体倾向于优先扩散到纳米管表面以及NT-聚合物基体的表面，并且被还原以形成纳米级金属颗粒或金属涂层。 MNPC的电导率随着金属化而增加，通过更有效地反射和吸收EM波，可以提供更好的屏蔽能力，抵抗各种EME和辐射。 此外，超临界流体浸渍工艺有助于显着地提高复合膜的韧性，而不管金属的存在。

    Metallized nanotube polymer composite (MNPC) and methods for making same
    3.
    发明申请
    Metallized nanotube polymer composite (MNPC) and methods for making same 有权
    金属化纳米管聚合物复合材料（MNPC）及其制备方法

    公开(公告)号：US20110068291A1

    公开(公告)日：2011-03-24

    申请号：US12313945

    申请日：2008-11-26

    申请人： Cheol Park ,  Joycelyn S. Harrison ,  Negin Nazem ,  Larry T. Taylor ,  Jin Ho Kang ,  Jae-Woo Kim ,  Godfrey Sauti ,  Peter T. Lillehei ,  Sharon E. Lowther

    发明人： Cheol Park ,  Joycelyn S. Harrison ,  Negin Nazem ,  Larry T. Taylor ,  Jin Ho Kang ,  Jae-Woo Kim ,  Godfrey Sauti ,  Peter T. Lillehei ,  Sharon E. Lowther

    IPC分类号： H01F1/26 ,  B05D1/24 ,  B05D3/10 ,  B82Y30/00

    CPC分类号： C08J7/02 ,  B29C70/882 ,  B29K2105/167 ,  B82Y30/00 ,  C08J3/203 ,  C08J7/06 ,  C08J2379/08 ,  Y02P20/544

    摘要： A novel method to develop highly conductive functional materials which can effectively shield various electromagnetic effects (EMEs) and harmful radiations. Metallized nanotube polymer composites (MNPC) are composed of a lightweight polymer matrix, superstrong nanotubes (NT), and functional nanoparticle inclusions. MNPC is prepared by supercritical fluid infusion of various metal precursors (Au, Pt, Fe, and Ni salts), incorporated simultaneously or sequentially, into a solid NT-polymer composite followed by thermal reduction. The infused metal precursor tends to diffuse toward the nanotube surface preferentially as well as the surfaces of the NT-polymer matrix, and is reduced to form nanometer-scale metal particles or metal coatings. The conductivity of the MNPC increases with the metallization, which provides better shielding capabilities against various EMEs and radiations by reflecting and absorbing EM waves more efficiently. Furthermore, the supercritical fluid infusion process aids to improve the toughness of the composite films significantly regardless of the existence of metal.

    摘要翻译： 一种开发高导电功能材料的新方法，可有效屏蔽各种电磁效应（EME）和有害辐射。 金属化纳米管聚合物复合材料（MNPC）由轻质聚合物基体，超细纳米管（NT）和功能性纳米粒子夹杂物组成。 MNPC通过将各种金属前体（Au，Pt，Fe和Ni盐）的超临界流体输注同时或依次并入固体NT-聚合物复合材料中，然后热还原制备。 注入的金属前体倾向于优先扩散到纳米管表面以及NT-聚合物基体的表面，并且被还原以形成纳米级金属颗粒或金属涂层。 MNPC的电导率随着金属化而增加，通过更有效地反射和吸收EM波，可以提供更好的屏蔽能力，抵抗各种EME和辐射。 此外，超临界流体浸渍工艺有助于显着地提高复合膜的韧性，而不管金属的存在。

    Carbon Nanotube Electrodes and Method for Fabricating Same for Use in Biofuel Cell and Fuel Cell Applications
    10.
    发明申请
    Carbon Nanotube Electrodes and Method for Fabricating Same for Use in Biofuel Cell and Fuel Cell Applications 审中-公开
    碳纳米管电极及其制造方法，用于生物燃料电池和燃料电池应用

    公开(公告)号：US20090136828A1

    公开(公告)日：2009-05-28

    申请号：US12272830

    申请日：2008-11-18

    申请人： Jae-Woo Kim ,  Peter T. Lillehei ,  Cheol Park ,  Sang H. Choi

    发明人： Jae-Woo Kim ,  Peter T. Lillehei ,  Cheol Park ,  Sang H. Choi

    IPC分类号： H01M4/02 ,  H01M4/88

    CPC分类号： H01M4/8828 ,  H01M4/8807 ,  H01M4/9008 ,  H01M4/9083 ,  H01M8/16 ,  Y02E60/527

    摘要： Carbon nanotubes (CNTs) are mixed in an aqueous buffer solution that includes a buffer material having a molecular structure defined by a first end, a second end, and a middle disposed between the first and second ends. The first end is a cyclic ring with nitrogen and oxygen heteroatomes, the middle is a hydrophobic alkyl chain, and the second end is a charged group. The resulting solution includes the CNTs dispersed therein. Metal-core ferritins are then mixed into the resulting solution where at least a portion of the ferritins are coupled to the CNTs.

    摘要翻译： 碳纳米管（CNT）在含有缓冲材料的缓冲水溶液中混合，所述缓冲材料具有由第一末端，第二末端以及设置在第一和第二末端之间的中间部分所限定的分子结构。 第一端是具有氮和氧的杂原子的环状环，中间是疏水性烷基链，第二端是带电基团。 所得溶液包括分散在其中的CNT。 然后将金属铁心蛋白混合到所得溶液中，其中至少一部分铁素体与CNT相连。