公开(公告)号：US11970791B2

公开(公告)日：2024-04-30

申请号：US17098688

申请日：2020-11-16

申请人： Mitsubishi Chemical Corporation

发明人： Takayuki Kiriyama ,  Naoki Sugiura ,  Masahiro Hata

IPC分类号： D01F9/22 ,  C08K7/06 ,  D01F6/18 ,  D01F6/38

CPC分类号： D01F9/22 ,  C08K7/06 ,  D01F6/18 ,  D01F6/38 ,  D01F9/225 ,  D10B2101/12 ,  Y10T428/2918

摘要： Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.

公开(公告)号：US11643756B1

公开(公告)日：2023-05-09

申请号：US17809059

申请日：2022-06-27

申请人： Arvind Agarwal ,  Ambreen Nisar ,  Lihua Lou ,  Benjamin Peter Boesl

发明人： Arvind Agarwal ,  Ambreen Nisar ,  Lihua Lou ,  Benjamin Peter Boesl

IPC分类号： C08J3/21 ,  C08K3/11 ,  C08K3/14 ,  C08K3/28 ,  C08K3/38 ,  D01F1/02 ,  D01F9/20 ,  D01F9/21 ,  D01F9/24 ,  D01F9/26 ,  D01F9/28 ,  D01F9/30 ,  D01F9/22 ,  C09K5/14 ,  D01D1/02 ,  D01D5/00 ,  D04H3/007 ,  D04H3/03 ,  D06C7/04 ,  D01F1/10 ,  C08J3/20

CPC分类号： D01F9/22 ,  C08J3/203 ,  C08J3/212 ,  C09K5/14 ,  D01D1/02 ,  D01D5/003 ,  D01D5/0038 ,  D01F1/10 ,  D01F9/245 ,  D04H3/007 ,  D04H3/03 ,  D06C7/04 ,  D01F9/225 ,  D10B2101/12 ,  D10B2101/122 ,  D10B2503/00

摘要： Hybrid carbon nanofiber (Cnf) products (e.g., mats, yarns, webs, etc.) and methods of fabricating the same are provided. The hybrid Cnf products are flexible and lightweight and have high thermal conductivity. An electrospinning process can be used to fabricate the hybrid Cnf products and can include preparation of an electrospinning solution, electrospinning, and carbonization (e.g., under a vacuum condition).

公开(公告)号：US20190233978A1

公开(公告)日：2019-08-01

申请号：US15951346

申请日：2018-04-12

申请人： UHT UNITECH COMPANY LTD.

发明人： CHIH-YUNG WANG

IPC分类号： D01F11/16 ,  D01D10/02 ,  D01D10/04 ,  D02J1/00

CPC分类号： D01F11/16 ,  D01D10/02 ,  D01D10/0454 ,  D01F9/14 ,  D01F9/225 ,  D02J1/00 ,  D10B2101/12 ,  D10B2211/04 ,  D10B2321/10 ,  D10B2401/063

摘要： The present disclosure relates to an oxidation fiber structure having an oxidation fiber, and the oxidation fiber has an oxidation layer and a core portion, wherein the oxidation layer covers the outer side of the core portion. The microwave processing unit is used to focus the microwave to perform an ultra-fast pre-oxidization process on the passed fiber yarn bunch, thus processing the fiber yarn bunch to form an oxidation fiber yarn bunch. An oxidization time of an oxidation fiber is reduced, and the cross section area of the oxidation layer of the oxidation fiber in the oxidation fiber yarn bunch generated by the microwave focusing oxidization process occupies more than 50% of the cross section area of the oxidation fiber in the oxidation fiber yarn bunch. Thus, the shell-core structure of the oxidation fiber can be reduced efficiently. Even, the oxidation fiber has no obvious shell-core structure.

公开(公告)号：US20180171511A1

公开(公告)日：2018-06-21

申请号：US15898745

申请日：2018-02-19

申请人： Hexcel Corporation

发明人： Carlos A. León y León

IPC分类号： D01F9/22

CPC分类号： D01F9/22 ,  C01B32/00 ,  C01B32/05 ,  D01F9/12 ,  D01F9/225 ,  D01F9/32 ,  D02J1/228 ,  D02J13/00 ,  D10B2101/12 ,  D10B2505/02 ,  F27B9/28 ,  Y10T428/2918

摘要： The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.

公开(公告)号：US20180051399A1

公开(公告)日：2018-02-22

申请号：US15560634

申请日：2016-03-29

申请人： TOHO TENAX CO.,LTD.

发明人： Yoshinori SUZUKI ,  Toshimichi NAKAJIMA

IPC分类号： D01F9/32

CPC分类号： D01F9/32 ,  C01B32/05 ,  D01F9/22 ,  D01F9/225 ,  D06M15/41 ,  D06M15/51 ,  D06M15/55 ,  D06M15/564 ,  D06M2101/40 ,  D06M2200/40

摘要： Carbon fibers having a high tensile strength satisfy the relationship represented by formula (1) and one of the relationships represented by formulas (2) to (5): La≧1  (1), La≦−0.5+0.01×TM when 170≦TM≦230  (2), La≦−37.3+0.17×TM when 230

公开(公告)号：US20170362441A1

公开(公告)日：2017-12-21

申请号：US15537241

申请日：2015-12-18

申请人： STC.UNM

发明人： Richard Alan Kemp ,  Mahmoud Reda Taha

IPC分类号： C09C1/48 ,  D01F9/127 ,  D01F1/10 ,  D01F9/22 ,  C08F120/44

CPC分类号： C09C1/482 ,  C08F120/44 ,  C09C1/48 ,  D01F1/10 ,  D01F9/1275 ,  D01F9/21 ,  D01F9/225

摘要： A method and precursor for making carbon fibers and the like comprising carbon black modified with at least one cyclic compound promoter. A source of the carbon black may be recycled materials such as recycled tires or recycled plastics. The carbon black is modified by attaching at least one cyclic compound promoter to the outer periphery of the carbon black.

公开(公告)号：US20170275786A1

公开(公告)日：2017-09-28

申请号：US15514300

申请日：2015-10-07

申请人： Georgia Tech Research Corporation

发明人： Satish Kumar ,  Han Gi Chae ,  Bradley A. Newcomb ,  Prabhakar V. Gulgunje ,  Yaodong Liu ,  Kishor K. Gupta ,  Manjeshwar G. Kamath

IPC分类号： D01F9/22 ,  D02G3/02

CPC分类号： D01F9/225 ,  C08L33/20 ,  D01F1/09 ,  D02G3/02 ,  D02G3/16 ,  D10B2101/12 ,  D10B2401/063

摘要： A carbon fiber has a fiber tensile strength in a range of 5.5 GPa to 5.83 GPa. The carbon fiber has a fiber tensile modulus in a range of 350 GPa to 375 GPa. The carbon fiber also has an effective diameter in a range of 5.1 μm to 5.2 μm. In a method of making a carbon fiber, PAN (poly(acrylonitrile-co methacrylic acid)) is dissolved into a solvent to form a PAN solution. The PAN solution is extruded through a spinneret, thereby generating at least one precursor fiber. The precursor fiber is passed through a cold gelation medium, thereby causing the precursor fiber to gel. The precursor fiber is drawn to a predetermined draw ratio. The precursor fiber is continuously stabilized to form a stabilized fiber. The stabilized fiber is continuously carbonized thereby generating the carbon fiber. The carbon fiber is wound onto a spool.

公开(公告)号：US09677196B2

公开(公告)日：2017-06-13

申请号：US14234261

申请日：2012-07-17

申请人： Marco Rovellini

发明人： Marco Rovellini

IPC分类号： C01B31/02 ,  D01D5/04 ,  D01D5/06 ,  D01D7/00 ,  D01F9/22 ,  D01D10/04 ,  D01F9/32 ,  D01D5/16 ,  D01D13/02

CPC分类号： D01F9/22 ,  D01D5/16 ,  D01D10/0454 ,  D01D10/0481 ,  D01D13/02 ,  D01F9/225 ,  D01F9/32 ,  D01F9/328

摘要： Process for manufacturing carbon fibers, includes a first spinning step of a fiber of PAN precursor and a second oxidation/carbonization step of the fiber and the plant thereof. The spinning and oxidation/carbonization steps are performed directly in line and continuously, and hence without any stocking buffer area of a PAN precursor between the two steps. The spinning step is performed at low speed, so that the output speed from the spinning step, downstream of the stretching operations, is a speed falling within the range of the suitable processing speeds in the subsequent oxidation/carbonization step. Moreover, the spinning step is performed in a modular way on a plurality of spinning modules aligned in one or more rows, each spinning module having a productivity not above 10% of the overall productivity of the spinning step. In any individual spinning module, the fibers downstream of the spinning area follow zig-zag, rectilinear paths.

公开(公告)号：US20170114478A1

公开(公告)日：2017-04-27

申请号：US15346134

申请日：2016-11-08

申请人： KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Jae Kap LEE ,  Won Kook CHOI

IPC分类号： D01F9/22 ,  D01F9/145 ,  C08K7/06

CPC分类号： D01F9/225 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/184 ,  C01B32/20 ,  C01P2004/17 ,  C08K3/04 ,  C08K3/043 ,  C08K5/20 ,  C08K7/06 ,  D01F9/145 ,  D01F9/16 ,  D01F9/22 ,  D10B2101/12 ,  Y10S977/734 ,  Y10S977/842

摘要： The present disclosure relates to a carbon fiber composition and a fabrication method for high-performance carbon fiber using the same. The method can fabricate high-performance carbon fiber (or graphite fiber) with lowering a graphitization temperature by using graphene carbon fiber composition including nano-sized graphene.

公开(公告)号：US20170057121A1

公开(公告)日：2017-03-02

申请号：US14836746

申请日：2015-08-26

申请人： GOODRICH CORPORATION

发明人： Gregory Hawkins ,  Diane Main

IPC分类号： B29B13/02 ,  D01D10/02

CPC分类号： B29B13/02 ,  B29K2033/20 ,  B29L2031/731 ,  C04B35/6267 ,  C04B35/83 ,  C04B2235/5252 ,  C04B2235/6581 ,  D01F9/22 ,  D01F9/225 ,  F16D69/023

摘要： A carbon/carbon part and processes for making carbon/carbon parts are provided. The process involves inserting a polyacrylonitrile preform (PAN preform) into a furnace, introducing an inert atmosphere into the furnace, and ramping up the furnace to a temperature greater than 1200° C. while maintaining the total pressure in the furnace greater 0.5 Atm. The method may convert the PAN preform into a carbon preform. The carbonization may be completed while maintaining the total pressure in the furnace greater than 0.5 Atm.

摘要翻译： 提供碳/碳部件以及制造碳/碳部件的方法。 该方法包括将聚丙烯腈预制件（PAN预制件）插入炉中，将惰性气体引入炉中，并将炉子升高至高于1200℃的温度，同时保持炉内的总压力大于0.5atm。 该方法可将PAN预型体转化为碳预成型体。 碳化可以在保持炉内的总压力大于0.5atm的情况下完成。