公开(公告)号：US20240309562A1

公开(公告)日：2024-09-19

申请号：US18574862

申请日：2022-07-08

申请人： Deakin University

发明人： Srinivas NUNNA ,  Russell VARLEY ,  Jens HOFER ,  Claudia CREIGHTON ,  Minoo NAEBE

IPC分类号： D01F9/22 ,  C08F20/44

CPC分类号： D01F9/225 ,  C08F20/44

摘要： Method of identifying stabilisation conditions for producing a thermally stabilised polyacrylonitrile (PAN) based carbon fibre precursor from any batch of precursor for use in carbon fibre manufacturing process are useful for reducing cost of carbon fibre manufacture. Method of manufacturing carbon fibres, comprising the steps of: providing a batch of isothermally stabilised polyacrylonitrile (PAN) based precursor fibres which presents as absent of evidence of tow burning or tow breakage, and having a structural conversion index selected from the range of from 0.5 to 0.7; subjecting the provided batch of isothermally treated precursor fibres to a carbonisation process to produce carbon fibre.

公开(公告)号：US20240117529A1

公开(公告)日：2024-04-11

申请号：US18549052

申请日：2022-01-27

申请人： Cytec Industries, Inc.

发明人： Jeremy Moskowitz ,  Amy Tucker ,  Matthew Jackson ,  Thomas Taylor ,  Suzanne Crawford ,  Janos Olah ,  John Desmond Cook

IPC分类号： D01D10/00 ,  D01D5/06 ,  D01F6/54 ,  D01F9/22

CPC分类号： D01D10/00 ,  D01D5/06 ,  D01F6/54 ,  D01F9/225 ,  D10B2321/10 ,  D10B2401/063

摘要： The present disclosure relates generally to a process for producing polymer fibers, typically polyacrylonitrile-based fibers, the properties of which are controlled by certain parameters of the process, such as the amount of jet stretch, the amount of wet stretch, and the amount of hot stretch employed. The present disclosure also relates to a process for producing carbon fiber from such polymer fibers.

公开(公告)号：US09938643B2

公开(公告)日：2018-04-10

申请号：US15587627

申请日：2017-05-05

申请人： Hexcel Corporation

发明人： Carlos A. León y León

IPC分类号： D01F9/12 ,  D01F9/22 ,  C01B31/00

CPC分类号： D01F9/22 ,  C01B31/00 ,  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：US09920456B2

公开(公告)日：2018-03-20

申请号：US13879278

申请日：2011-10-13

申请人： Yuusuke Shinmen ,  Norifumi Hirota ,  Takeshi Nii

发明人： Yuusuke Shinmen ,  Norifumi Hirota ,  Takeshi Nii

IPC分类号： D01F9/12 ,  B32B37/14 ,  F27D7/00 ,  D01D5/253 ,  D01F6/38 ,  D01F9/22 ,  C08J5/04 ,  D01D5/096 ,  C08J5/24 ,  B29C70/44

CPC分类号： D01F9/12 ,  B29C70/44 ,  B32B37/14 ,  C08J5/042 ,  C08J5/24 ,  C08J2363/00 ,  D01D5/096 ,  D01D5/253 ,  D01F6/38 ,  D01F9/225 ,  F27D7/00 ,  Y10T428/26 ,  Y10T428/298 ,  Y10T442/3089

摘要： A carbon-fiber-precursor acryl fiber bundle, including a polyacrylonitrile-based copolymer that contains from 95 to 99 mol % of an acrylonitrile unit and from 1 to 5 mol % of a hydroxyalkyl (meth)acrylate unit, where the fiber bundle has a single-fiber fineness of from 1.5 dtex to 5.0 dtex and a roundness of from 0.75 to 0.9 in a cross-section shape perpendicular to a fiber axis of the single fiber; the roundness being determined with equation (1): roundness=4πS/L2, where S is a cross-sectional area of the single fiber and L is a circumferential length of the single fiber, and S and L are obtained by observing, under an SEM, the cross-section of the single fiber perpendicular to the fiber axis of the single fiber and analyzing the obtained image.

公开(公告)号：US09890481B2

公开(公告)日：2018-02-13

申请号：US14646962

申请日：2013-11-22

申请人： Mitsubishi Chemical Corporation

发明人： Mitsuhiro Hamada ,  Hiroyuki Nakao ,  Hiromi Aso ,  Yoshitaka Kageyama

IPC分类号： C01B31/02 ,  D01F9/22 ,  D02J13/00 ,  D06M10/02 ,  D01F9/21 ,  D06M10/00 ,  D01D10/00 ,  D01F11/06 ,  D01F6/16

CPC分类号： D01F9/21 ,  D01D10/00 ,  D01F6/16 ,  D01F9/225 ,  D01F11/06 ,  D06M10/001 ,  D06M10/025

摘要： The purpose of the present invention is to provide a method whereby deposits which have occurred on the surfaces of a fiber bundle during flameproofing treatment of a carbon fiber-precursor acrylic fiber bundle can be efficiently removed prior to carbonization treatment at high temperature. The method for production of carbon fiber bundle includes a step in which, after a carbon fiber-precursor acrylic fiber bundle has been heated and undergone flameproofing treatment, the fiber bundle is subjected to a plasma treatment involving contact with a plasma gas in gas phase, or to an ultraviolet treatment involving irradiation with ultraviolet in gas phase; and a step in which the fiber bundle having undergone the plasma treatment or the ultraviolet treatment is subjected to a carbonization treatment.

公开(公告)号：US20170298539A1

公开(公告)日：2017-10-19

申请号：US15513454

申请日：2015-09-10

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： Mathias HAHN ,  Antje LIESKE ,  Mats KNOOP

IPC分类号： D01F9/127 ,  D01D10/02 ,  D01D5/08

CPC分类号： D01F9/1277 ,  D01D5/08 ,  D01D10/02 ,  D01F6/18 ,  D01F6/38 ,  D01F9/225 ,  D01F11/06

摘要： The invention relates to a method for the production of thermally stabilised melt spun fibres, in which polyacrylonitrile (PAN) fibres or PAN fibre precursors produced by melt spinning are treated in an aqueous alkaline solution which comprises in addition a solvent for PAN. Likewise, the invention relates to fibres which are producible according to this method.

公开(公告)号：US09738994B2

公开(公告)日：2017-08-22

申请号：US14391802

申请日：2013-04-12

申请人： Mitsubishi Chemical Corporation

发明人： Tadanobu Ikeda ,  Tadao Samejima ,  Youji Hatanaka ,  Tetsu Yasunami

IPC分类号： D01F9/21 ,  D01F9/22 ,  F27D7/04 ,  F27D7/06 ,  D01F9/32 ,  D01F6/18 ,  B65H69/06 ,  D04H3/007 ,  D04H3/04 ,  F27B17/00

CPC分类号： D01F9/21 ,  B65H69/063 ,  D01F6/18 ,  D01F9/22 ,  D01F9/225 ,  D01F9/328 ,  D04H3/007 ,  D04H3/04 ,  D10B2101/12 ,  F27B17/0016 ,  F27D7/04 ,  F27D7/06 ,  F27D2007/063

摘要： A carbon-fiber-precursor acrylic fiber bundle which can smoothly pass through a flame-resistance impartation step and a carbonization step. The carbon-fiber-precursor acrylic fiber bundle has a high-density part as a portion thereof, wherein the high-density part satisfies the following requirements (A) and (B). Requirement A: The high-density part has a maximum fiber density ρmax of 1.33 g/cm3 or higher. Requirement B: The portion extending between an intermediate-density point and a maximum-density-region arrival point has an increase in fiber density of 1.3×10−2 g/cm3 or less per 10 mm of the fiber bundle length.

公开(公告)号：US20170233900A1

公开(公告)日：2017-08-17

申请号：US15587627

申请日：2017-05-05

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 ,  C01B31/00 ,  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：US09732445B2

公开(公告)日：2017-08-15

申请号：US14640788

申请日：2015-03-06

申请人： UT-Battelle, LLC

发明人： Orlando Rios ,  Michael Alan McGuire ,  Karren Leslie More ,  Wyatt Evan Tenhaeff ,  Paul A. Menchhofer ,  Felix Leonard Paulauskas

IPC分类号： D01F9/20 ,  D01F9/14 ,  D01F1/10 ,  D01F9/145 ,  D01F9/15 ,  D01F9/16 ,  D01F9/22 ,  D01F9/21 ,  B29C44/46 ,  D01F9/12 ,  D01F9/155 ,  D01F9/17

CPC分类号： D01F9/14 ,  B29C44/464 ,  D01F1/10 ,  D01F9/12 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155 ,  D01F9/16 ,  D01F9/17 ,  D01F9/20 ,  D01F9/21 ,  D01F9/22 ,  D01F9/225

摘要： A method for producing a carbon fiber, the method comprising: (i) subjecting a continuous carbon fiber precursor having a polymeric matrix in which strength-enhancing particles are incorporated to a stabilization process during which the carbon fiber precursor is heated to within a temperature range ranging from the glass transition temperature to no less than 20° C. below the glass transition temperature of the polymeric matrix, wherein the maximum temperature employed in the stabilization process is below 400° C., for a processing time within said temperature range of at least 1 hour in the presence of oxygen and in the presence of a magnetic field of at least 1 Tesla, while said carbon fiber precursor is held under an applied axial tension; and (ii) subjecting the stabilized carbon fiber precursor, following step (i), to a carbonization process. The stabilized carbon fiber precursor, resulting carbon fiber, and articles made thereof are also described.

公开(公告)号：US09644290B2

公开(公告)日：2017-05-09

申请号：US14519057

申请日：2014-10-20

申请人： DONGHUA UNIVERSITY

发明人： Muhuo Yu ,  Huaiping Rong ,  Keqing Han ,  Zhaohua Wang ,  Yincai Tian ,  Hui Zhang

IPC分类号： B05D1/00 ,  D01F9/22 ,  D02J1/22 ,  D01D1/04 ,  D01D5/08 ,  D01D10/02 ,  D01F1/10 ,  D01F6/18 ,  D01D5/06 ,  D01D10/06 ,  D01F1/02 ,  B05D1/18

CPC分类号： D01F9/22 ,  B05D1/007 ,  B05D1/18 ,  D01D1/04 ,  D01D5/06 ,  D01D5/08 ,  D01D10/02 ,  D01D10/06 ,  D01F1/02 ,  D01F1/10 ,  D01F6/18 ,  D01F9/225 ,  D02J1/224 ,  D10B2101/12 ,  D10B2101/122 ,  D10B2321/10

摘要： Processes for producing carbon fiber, the filament thereof and pre-oxidized fiber are provided. In one embodiment, the gel spinning of polyacrylonitrile filament is achieved by using small-molecule gelling agent, and the carbon fiber obtained thereby is increased by 15% to 40% in tensile strength and by 20% to 35% in toughness. In another embodiment, the melt spinning process of polyacrylonitrile is conducted by using imidazole type ion liquid as plasticizer, the process reduces environment pollution, is suitable for industrial production and the fiber produced thereby is improved in its strength. In yet another embodiment, polyacrylonitrile pre-oxidized fiber is produced by melt spinning, so low cost and controllable pre-oxidization of polyacrylonitrile can be achieved. In a further embodiment, high strength carbon fiber is manufactured by using polymer thickening agent. In another further embodiment, low cost and controllable pre-oxidization of polyacrylonitrile is achieved by conducting pre-oxidization before spinning, minimizing skin-core structure, so as to produce high performance carbon fiber, and reduce the production cost of carbon fiber greatly.