公开(公告)号：US11859315B1

公开(公告)日：2024-01-02

申请号：US17582329

申请日：2022-01-24

申请人： United States of America as represented by the Administrator of NASA

发明人： Maricela Lizcano ,  Diana Santiago-Dejesus

IPC分类号： B29C41/04 ,  B29C71/04 ,  C04B35/583 ,  D01D1/02 ,  D01D1/04 ,  D01D5/40 ,  D01D10/02 ,  D01D5/18 ,  D01F9/10 ,  C04B35/622 ,  C04B41/00

CPC分类号： D01D5/18 ,  B29C41/042 ,  C04B35/6229 ,  C04B41/0045 ,  D01F9/10 ,  C04B2235/658 ,  C04B2235/661

摘要： A method of preparing hexagonal boron nitride (h-BN) fibers includes mixing polyvinylpyrrolidone (PVP) and boron oxide (B2O3) to form a polymer precursor or mixing PVP and ammonia borane (BH3NH3) to form the polymer precursor. The method includes forcespinning the polymer precursor to form fibers of the polymer precursor, curing the fibers to form polymer fibers, and pyrolyzing the polymer fibers to form the h-BN fibers.

公开(公告)号：US20150329360A1

公开(公告)日：2015-11-19

申请号：US14712523

申请日：2015-05-14

申请人： University of Dayton

发明人： Lingchuan Li

IPC分类号： C01B21/064 ,  C23C16/46 ,  C23C16/24 ,  C01B33/029 ,  C23C16/22

CPC分类号： C01B21/064 ,  C01B33/029 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2004/04 ,  C01P2004/13 ,  C04B35/6229 ,  C04B35/62675 ,  C04B35/62889 ,  C04B35/806 ,  C04B41/009 ,  C04B41/4584 ,  C04B2235/3208 ,  C04B2235/3272 ,  C04B2235/3289 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/44 ,  C04B2235/443 ,  C04B2235/444 ,  C04B2235/46 ,  C04B2235/5216 ,  C04B2235/5248 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5284 ,  C04B2235/614 ,  C04B2235/616 ,  C04B2235/652 ,  C04B2235/6562 ,  C04B2235/6581 ,  C23C16/02 ,  C23C16/22 ,  C23C16/24 ,  C23C16/342 ,  C23C16/46 ,  C23C16/463 ,  C04B14/386 ,  C04B41/4531 ,  C04B41/4549 ,  C04B41/4596 ,  C04B41/5064 ,  C04B41/5096

摘要： Methods of growing boron nitride nanotubes and silicon nanowires on carbon substrates formed from carbon fibers. The methods include applying a catalyst solution to the carbon substrate and heating the catalyst coated carbon substrate in a furnace in the presence of chemical vapor deposition reactive species to form the boron nitride nanotubes and silicon nanowires. A mixture of a first vapor deposition precursor formed from boric acid and urea and a second vapor deposition precursor formed from iron nitrate, magnesium nitrate, and D-sorbitol are provided to the furnace to form boron nitride nanotubes. A silicon source including SiH4 is provided to the furnace at atmospheric pressure to form silicon nanowires.

摘要翻译： 在由碳纤维形成的碳衬底上生长氮化硼纳米管和硅纳米线的方法。 所述方法包括在化学气相沉积反应物质存在下将催化剂溶液施加到碳基底上并加热催化剂涂覆的碳基底，以形成氮化硼纳米管和硅纳米线。 将由硼酸和尿素形成的第一气相沉积前体和由硝酸铁，硝酸镁和D-山梨糖醇形成的第二气相沉积前体的混合物提供给炉以形成氮化硼纳米管。 在大气压下向炉提供包括SiH 4的硅源，以形成硅纳米线。

公开(公告)号：US20050119106A1

公开(公告)日：2005-06-02

申请号：US10380605

申请日：2001-09-14

申请人： Martin Jansen ,  Utz Muller ,  Jurgen Clade ,  Dieter Sporn

发明人： Martin Jansen ,  Utz Muller ,  Jurgen Clade ,  Dieter Sporn

IPC分类号： C04B35/56 ,  C01B21/082 ,  C07F7/10 ,  C07F7/12 ,  D01F9/08 ,  D03D15/12 ,  C04B35/589 ,  C04B35/571

CPC分类号： C07F7/10 ,  C04B35/571 ,  C04B35/583 ,  C04B35/589 ,  C04B35/62281 ,  C04B35/6229 ,  C04B35/62295 ,  C04B2235/3826 ,  C04B2235/386 ,  C04B2235/3873 ,  C04B2235/483 ,  C04B2235/486 ,  C04B2235/6022 ,  C07F7/12

摘要： The invention relates to a method for controlling the alertness of a human subject and a light source for use in this method and use of a light source for this method. The method comprises exposure of a human subject during an exposure period to suitable light radiation without substantially influencing the phase of a melatonin cycle. Melatonin is a sleep-hormone that can be used to control the alertness of a human subject The suitable light radiation being specified by an output fraction of melatonin suppressive radiation (Melatonin Watt/Watt) and light output (lumen/Watt), the output fraction and light output being adjusted to obtain the desired effect on the phase of said cycle.

公开(公告)号：US20030180206A1

公开(公告)日：2003-09-25

申请号：US10346121

申请日：2003-01-17

申请人： EADS LAUNCH VEHICLES

发明人： Philippe Miele ,  Berangere Toury ,  David Cornu ,  Samuel Bernard ,  Marie-Paule Berthet ,  Loic Rousseau ,  Guy Beauhaire

IPC分类号： C01B021/064

CPC分类号： C04B35/52 ,  C04B35/583 ,  C04B35/62272 ,  C04B35/6229 ,  C04B35/806 ,  C04B2235/465 ,  C04B2235/486 ,  C04B2235/524 ,  C04B2235/5264 ,  C04B2235/72 ,  C04B2235/96 ,  C08G79/08 ,  C08L85/04 ,  D01F9/08 ,  D01F11/00 ,  H01L23/15 ,  H01L2924/0002 ,  H01L2924/00

摘要： The present invention concerns high performance boron nitride fibres and a process for manufacturing said fibres. The present invention uses a borylborazine precursor of the following formula (I):null(NHR)2B(NR)null3B3N3H3nullnull(I)in which R represents a hydrogen atom or an alkyl, cycloalkyl or aryl group, said group comprising from 1 to 30 carbon atoms.

摘要翻译： 本发明涉及高性能氮化硼纤维和制造所述纤维的方法。 本发明使用下式（I）的硼烷基硼氢化物前体：[（NHR）2B（NR）] 3B3N3H3（Ⅰ），其中R表示氢原子或烷基，环烷基或芳基，所述基团包括1〜 30个碳原子。

公开(公告)号：US3399979A

公开(公告)日：1968-09-03

申请号：US60257266

申请日：1966-12-19

申请人： UNION CARBIDE CORP

发明人： HAMLING BERNARD H

IPC分类号： B01J35/06 ,  B01J37/00 ,  C01B21/064 ,  C01B31/30 ,  C04B35/46 ,  C04B35/48 ,  C04B35/50 ,  C04B35/56 ,  C04B35/583 ,  C04B35/591 ,  C04B35/622 ,  C22C1/08 ,  D01F9/00 ,  D01F9/08 ,  D01F9/10 ,  D01F9/127 ,  D01F9/16 ,  D01F9/18 ,  D01F9/22 ,  D01F9/24 ,  D01F9/26 ,  D01F11/12

CPC分类号： C04B35/62286 ,  B01J35/06 ,  B01J37/0018 ,  B82Y30/00 ,  C01B21/064 ,  C01B32/90 ,  C01P2004/10 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/80 ,  C01P2006/60 ,  C04B35/46 ,  C04B35/48 ,  C04B35/50 ,  C04B35/583 ,  C04B35/591 ,  C04B35/6229 ,  C04B35/62295 ,  C22C1/08 ,  D01F9/16 ,  Y10S264/19

公开(公告)号：US11919771B2

公开(公告)日：2024-03-05

申请号：US17496513

申请日：2021-10-07

申请人： BNNT, LLC

发明人： Michael W. Smith ,  Kevin C. Jordan ,  Jonathan C. Stevens ,  R. Roy Whitney

IPC分类号： C01B21/064 ,  B01J10/00 ,  B01J19/00 ,  B82Y30/00 ,  C04B35/622

CPC分类号： C01B21/0641 ,  B01J10/005 ,  B01J19/0013 ,  C04B35/6229 ,  B01J2219/00132 ,  B82Y30/00 ,  C01P2004/01 ,  C01P2004/04 ,  C01P2004/13 ,  C04B2235/386 ,  C04B2235/404 ,  C04B2235/421

摘要： High quality, catalyst-free boron nitride nanotubes (BNNTs) that are long, flexible, have few wall molecules and few defects in the crystalline structure, can be efficiently produced by a process driven primarily by Direct Induction. Secondary Direct Induction coils, Direct Current heaters, lasers, and electric arcs can provide additional heating to tailor the processes and enhance the quality of the BNNTs while reducing impurities. Heating the initial boron feed stock to temperatures causing it to act as an electrical conductor can be achieved by including refractory metals in the initial boron feed stock, and providing additional heat via lasers or electric arcs. Direct Induction processes may be energy efficient and sustainable for indefinite period of time. Careful heat and gas flow profile management may be used to enhance production of high quality BNNT at significant production rates.

公开(公告)号：US11788213B2

公开(公告)日：2023-10-17

申请号：US17132205

申请日：2020-12-23

申请人： FREE FORM FIBERS, LLC

发明人： Shay L. Harrison ,  Joseph Pegna ,  Erik G. Vaaler ,  Ram K. Goduguchinta ,  Kirk L. Williams ,  John L. Schneiter

IPC分类号： C23C16/44 ,  D01F11/12 ,  D01F9/08 ,  C04B35/622 ,  D01D5/20 ,  C01B32/956 ,  D01F1/10 ,  C23C16/52 ,  C01B32/914 ,  C01B21/076 ,  C01B35/04 ,  C23C16/48 ,  H01S3/067

CPC分类号： D01F11/127 ,  C01B21/0761 ,  C01B32/914 ,  C01B32/956 ,  C01B35/04 ,  C04B35/6229 ,  C04B35/62272 ,  C04B35/62277 ,  C04B35/62281 ,  C04B35/62286 ,  C04B35/62295 ,  C23C16/4418 ,  C23C16/483 ,  C23C16/52 ,  D01D5/20 ,  D01F1/10 ,  D01F9/08 ,  H01S3/06737 ,  C04B2235/40 ,  C04B2235/404 ,  C04B2235/5264 ,  C04B2235/665 ,  C04B2235/85

摘要： A method of making a multi-composition fiber is provided, which includes providing a precursor laden environment, and forming a fiber in the precursor laden environment using laser heating. The precursor laden environment includes a primary precursor material and an elemental precursor material. The formed fiber includes a primary fiber material and an elemental additive material, where the elemental additive material has too large an atom size to fit within a single crystalline domain within a crystalline structure of the fiber, and is deposited on grain boundaries between adjacent crystalline domains of the primary fiber material to present an energy barrier to atomic diffusion through the grain boundaries, and to increase creep resistance by slowing down growth between the adjacent crystalline domains of the primary fiber material.

公开(公告)号：US20160317997A1

公开(公告)日：2016-11-03

申请号：US15206143

申请日：2016-07-08

申请人： The Regents of the University of California

发明人： Alexander K. Zettl

IPC分类号： B01J19/08 ,  C01B21/064

CPC分类号： B01J19/088 ,  B01J2219/0809 ,  B01J2219/0824 ,  B01J2219/0898 ,  B82Y40/00 ,  C01B21/0641 ,  C04B35/6229 ,  D01F9/08 ,  Y10S977/831 ,  Y10S977/896

摘要： Methods and apparatus for producing chemical nanostructures having multiple elements, such as boron and nitride, e.g. boron nitride nanotubes, are disclosed. The method comprises creating a plasma jet, or plume, such as by an arc discharge. The plasma plume is elongated and has a temperature gradient along its length. It extends along its length into a port connector area having ports for introduction of feed materials. The feed materials include the multiple elements, which are introduced separately as fluids or powders at multiple ports along the length of the plasma plume, said ports entering the plasma plume at different temperatures. The method further comprises modifying a temperature at a distal portion of or immediately downstream of said plasma plume; and collecting said chemical nanostructures after said modifying.

公开(公告)号：US20120237765A1

公开(公告)日：2012-09-20

申请号：US13401627

申请日：2012-02-21

申请人： Edward J.A. Pope ,  Christopher L. Hill

发明人： Edward J.A. Pope ,  Christopher L. Hill

IPC分类号： C01B31/36 ,  D02G3/16 ,  C08G77/54 ,  B29B11/10 ,  B29B13/02

CPC分类号： C01B31/36 ,  C01B21/0643 ,  C01B21/068 ,  C01B32/956 ,  C01B35/146 ,  C04B35/62281 ,  C04B35/6229 ,  C04B35/62295 ,  C04B35/6267 ,  C04B35/6268 ,  C04B35/6269 ,  C04B2235/483 ,  C04B2235/5252 ,  C04B2235/5264 ,  C04B2235/72 ,  C04B2235/722 ,  C04B2235/723 ,  C04B2235/96 ,  C08G77/62 ,  C08G79/08 ,  Y10T428/2918

摘要： A novel polycrystalline stoichiometric fine SiC fiber substantially free of impurities is produced using a novel pre-ceramic polymer. The pre-ceramic polymer is prepared by reacting a mixture of chlorodisilane, boron trichloride, and a vinyl chlorodisilane with an excess of hexamethyldisilazane to form the pre-ceramic polymer resin, which may then be melt-spun, cured, pyrolyzed and heat-treated to obtain the finished SiC fiber. The manufacturing process for the production of the fine SiC ceramic fiber allows for flexibility with respect to cross-linking, in that low-cost thermal treatments may replace more complex methods, while obtaining fibers with improved materials properties as compared to currently available SiC fibers.

摘要翻译： 使用新的预陶瓷聚合物制备基本上不含杂质的新颖的多晶化学计量精细SiC纤维。 通过使氯二硅烷，三氯化硼和乙烯基氯代硅烷的混合物与过量的六甲基二硅氮烷反应来制备预陶瓷聚合物，以形成预陶瓷聚合物树脂，然后将其熔融纺丝，固化，热解和热处理 以获得成品的SiC纤维。 用于生产精细SiC陶瓷纤维的制造方法允许相对于交联的柔性，因为与目前可获得的SiC纤维相比，获得具有改进的材料性质的纤维，低成本热处理可以代替更复杂的方法。

公开(公告)号：US20120175242A1

公开(公告)日：2012-07-12

申请号：US13200315

申请日：2011-09-22

申请人： Michael W. Smith ,  Kevin C. Jordan

发明人： Michael W. Smith ,  Kevin C. Jordan

IPC分类号： B01J19/08 ,  B82Y40/00

CPC分类号： B01J19/121 ,  B01J2219/0879 ,  B82Y30/00 ,  B82Y40/00 ,  C01B21/0641 ,  C01P2004/16 ,  C01P2004/17 ,  C04B35/6229 ,  C04B2235/46 ,  C04B2235/526 ,  C04B2235/5284

摘要： An integrated production apparatus for production of boron nitride nanotubes via the pressure vapor-condenser method. The apparatus comprises: a pressurized reaction chamber containing a continuously fed boron containing target having a boron target tip, a source of pressurized nitrogen and a moving belt condenser apparatus; a hutch chamber proximate the pressurized reaction chamber containing a target feed system and a laser beam and optics.

摘要翻译： 一种通过压力蒸气冷凝法生产氮化硼纳米管的集成制造装置。 该装置包括：加压反应室，其含有具有硼靶标的连续供给的含硼靶，加压氮源和移动带式冷凝器装置; 靠近加压反应室的离合器室包含目标进料系统以及激光束和光学器件。