公开(公告)号：US11840776B2

公开(公告)日：2023-12-12

申请号：US16975667

申请日：2019-02-26

Applicant: The Texas A&M University System

Inventor： Joshua Shuhua Yuan ,  Qiang Li

IPC: D01F9/17 ,  C07G1/00 ,  D01D5/00

CPC classification number: D01F9/17 ,  C07G1/00 ,  D01D5/003

Abstract: A method of producing carbon fibers includes (a) treating lignin to produce a precursor lignin having an increased uniformity. The increased uniformity is defined by (i) an increased linear structure as evidenced by an increased percentage of linkages selected from uncondensed β-O-4′ interunitery linkages or condensed β-5′ linkages, (ii) a reduced polydispersity index (PDI), or (iii) an increased amount of multiple intermolecular hydrogen bonding relative to the lignin prior to treating. In addition, the method includes (b) forming precursor fibers from the precursor lignin. Further, the method includes (c) subjecting the precursor fibers to thermostabilization or carbonization to produce the carbon fibers.

公开(公告)号：US20230272559A1

公开(公告)日：2023-08-31

申请号：US18003554

申请日：2021-06-23

Applicant: RISE RESEARCH INSTITUTES OF SWEDEN AB

Inventor： Andreas BENGTSSON ,  Maria SEDIN ,  Elisabet BRÄNNVALL ,  Alice LANDMÉR ,  Fernando ALVARADO

IPC: D01F9/17 ,  D01F2/00 ,  D01D5/06 ,  C08L1/02 ,  C08K3/22

CPC classification number: D01F9/17 ,  D01F2/00 ,  D01D5/06 ,  C08L1/02 ,  C08K3/22 ,  D10B2201/22 ,  D10B2401/063 ,  C08K2003/2296 ,  C08L2203/12

Abstract: The present disclosure relates to a method for the production of precursor fiber for the production of carbon fiber, comprising the steps: a) a) forming a spinning dope comprising a dissolving pulp, a lignin and an alkali metal hydroxide dissolved in water (s201); 5 b) extruding the spinning dope through a spinning nozzle to provide a fibrous extrudate (s203); and c) passing the fibrous extrudate through a coagulation liquid to provide the precursor fiber (s205); wherein the coagulation liquid is arranged to effect precipitation of the precursor fiber by regulation of pH and/or ionicity. The disclosure further relates to precursor fibers and carbon fibers produced by the method above, as well as spinning dopes used in the method.

公开(公告)号：US20190271101A1

公开(公告)日：2019-09-05

申请号：US16344956

申请日：2017-10-26

Applicant: Arkema France

Inventor： Alexander KORZHENKO ,  Tatiana KOLOMIETS

IPC: D01F9/17 ,  C01B32/05 ,  C08K7/06 ,  C08K3/04 ,  C08K9/06

Abstract: A process for producing a highly carbonaceous fibre or set of fibres including combining a structured precursor comprising a hydrocellulose fibre or a set of fibres, and an unstructured precursor, including lignin or a lignin derivative in the form of a solution having a viscosity less than 15,000 mPa·s−1 at the temperature at which the combination step takes place, in order to obtain a hydrocellulose fibre or set of fibres coated with the lignin or lignin derivative, wherein the process further includes a step of thermal and dimensional stabilization of the hydrocellulose fibre or set of fibres covered with the lignin in order to obtain a hydrocellulose fibre or set of fibres covered with a deposit of lignin or lignin derivative, and a carbonization step of the hydrocellulose fibre or set of fibres coated with a lignin deposit in order to obtain a highly carbonaceous fibre or set of fibres.

公开(公告)号：US20190032250A1

公开(公告)日：2019-01-31

申请号：US16072514

申请日：2016-01-26

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

Inventor： Johannes GANSTER ,  André LEHMANN ,  Robert PROTZ ,  Jens ERDMANN

IPC: D01F9/17 ,  D01F2/24

Abstract: The invention relates to a method for producing a precursor fiber which is suitable for further processing into carbon and activated carbon fibers. The method is a wet spinning method in which a spinning solution consisting of lignin or lignin derivatives, cellulose carbamate, and alkali lye are pressed through the holes of a nozzle and introduced directly into a coagulation bath. The precursor fibers falling into the bath can undergo different additional method steps: they can be stretched, post-treated, dried at an increased temperature, and wound. Because the precursor fibers constitute an inexpensive starting material, the precursor fibers can be used in connection with the production of carbon and activated carbon fibers.

公开(公告)号：US09732445B2

公开(公告)日：2017-08-15

申请号：US14640788

申请日：2015-03-06

Applicant: UT-Battelle, LLC

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

IPC: 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 classification number: 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

Abstract: 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：US20170073495A1

公开(公告)日：2017-03-16

申请号：US15310525

申请日：2015-05-12

Applicant: Stora Enso OYJ

Inventor： Niklas Garoff ,  Stephan Walter

IPC: C08K3/04 ,  H05K9/00 ,  D01F9/17

CPC classification number: C08K3/04 ,  C08K2201/001 ,  C09J9/02 ,  C09J11/04 ,  D01F9/17 ,  H05K9/0083

Abstract: The present invention relates to abase polymer material composition comprising a conductive carbon powder, a method for the manufacturing thereof and use thereof.

Abstract translation: 本发明涉及含有导电性碳粉末的低分子材料组合物，其制造方法及其用途。

公开(公告)号：US20170073494A1

公开(公告)日：2017-03-16

申请号：US15310518

申请日：2015-05-12

Applicant: Stora Enso OYJ

Inventor： Niklas Garoff ,  Stephan Walter

IPC: C08K3/04 ,  C08J9/04 ,  C08J9/00 ,  H05K9/00 ,  D01F9/17

CPC classification number: C08K3/04 ,  C01B32/336 ,  C01P2004/61 ,  C01P2006/40 ,  C08J9/0066 ,  C08J9/04 ,  C08J2300/22 ,  C08J2300/26 ,  C08J2323/06 ,  C08J2323/12 ,  C08J2325/06 ,  C08J2327/06 ,  C08J2353/02 ,  C08J2375/04 ,  C08K2201/001 ,  C09C1/48 ,  D01F9/17 ,  H05K9/0083

Abstract: The present invention relates to a composition comprising a conductive carbon powder and a foamable polymer, a method for the manufacturing thereof and use thereof. Also a method for making a foam is disclosed, together with a foam obtainable from said method and use thereof.

Abstract translation: 本发明涉及包含导电碳粉末和可发泡聚合物的组合物，其制造方法及其用途。 还公开了一种制造泡沫的方法，以及可从所述方法获得的泡沫及其用途。

公开(公告)号：US09190222B1

公开(公告)日：2015-11-17

申请号：US13830043

申请日：2013-03-14

Applicant: North Carolina Agricultural and Technical State University ,  South Dakota School of Mines and Technology

Inventor： Lifeng Zhang ,  Ajit Kelkar ,  Hao Fong ,  Chuilin Lai

IPC: D01F9/17 ,  H01G11/34 ,  D01D5/00 ,  D01F9/14 ,  H01G11/24 ,  H01G11/36

CPC classification number: H01G11/36 ,  D01D5/0007 ,  D01D5/0023 ,  D01D5/003 ,  D01F6/50 ,  D01F9/14 ,  D01F9/17 ,  H01G11/24 ,  H01G11/34 ,  H01G11/86 ,  Y02E60/13

Abstract: The present application discloses carbonaceous nano-fibrous materials developed by electrospinning mixtures of alkali lignin with a polymer at varied mass ratios. The present application also discloses processing of the lignin/polymer fibers via progressive heat treatments for stabilization, pre-carbonization and carbonization. The resulting carbon nanofibers maintain a uniform shape and have high specific surface area.

Abstract translation: 本申请公开了通过将不同质量比的碱性木质素与聚合物的混合物纺丝而开发的碳质纳米纤维材料。 本申请还公开了通过逐步热处理以稳定，预碳化和碳化处理木质素/聚合物纤维。 所得碳纳米纤维保持均匀的形状并具有高比表面积。

公开(公告)号：US20150284880A1

公开(公告)日：2015-10-08

申请号：US14440411

申请日：2013-11-05

Applicant: GRAFTECH INTERNATIONAL HOLDINGS INC.

Inventor： Bassam Alnasleh ,  Ching-Feng Chang ,  Omer Gul ,  Andrew Hausner ,  Robert Miller ,  Orest Adrianowycz

IPC: D01F9/17 ,  D01F9/145

CPC classification number: D01F9/17 ,  C07G1/00 ,  C08H6/00 ,  C08L95/00 ,  C08L97/005 ,  D01F9/145

Abstract: A method of making a carbon fiber comprising esterification of a lignin precursor with an acid, acid anhydride, or acyl halide, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue selected from the group of coal based raw material, petroleum based raw material and combinations thereof, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising esterification of a lignin with an acid derivative, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a pitch, thereby forming a fiber precursor mixture; and spinning the fiber precursor mixture into a fiber. A method of making a carbon fiber comprising lowering the Tg of a lignin material, thereby forming a reduced Tg lignin. Mixing the reduced Tg lignin with a carbon residue, thereby forming a fiber precursor mixture and spinning the fiber precursor mixture into a fiber.

Abstract translation: 一种制备碳纤维的方法，其包括用酸，酸酐或酰基卤酯化木质素前体，从而形成降低的Tg木质素。 将还原的Tg木质素与选自煤基原料，石油基原料及其组合的碳残渣混合，从而形成纤维前体混合物; 并将纤维前体混合物纺丝成纤维。 一种制备碳纤维的方法，其包括用酸衍生物酯化木质素，从而形成降低的Tg木质素。 将降低的Tg木质素与沥青混合，从而形成纤维前体混合物; 并将纤维前体混合物纺丝成纤维。 一种制造碳纤维的方法，包括降低木质素材料的Tg，从而形成降低的Tg木质素。 将还原的Tg木质素与碳残余物混合，从而形成纤维前体混合物并将纤维前体混合物纺丝成纤维。

公开(公告)号：US20150233023A1

公开(公告)日：2015-08-20

申请号：US14429828

申请日：2013-08-20

Applicant: GRAFTECH INTERNATIONAL HOLDINGS INC.

Inventor： Ching-Feng Chang ,  Bassam Kamal Alnasleh ,  Omer Gul ,  Robert E Miller ,  Andrew Adam Hausner ,  Orest L Adrianowycz ,  Chong Chen ,  Brian Paul Askey

IPC: D01F9/17 ,  D01D5/06 ,  C07G1/00

CPC classification number: D01F9/17 ,  C07G1/00 ,  D01D5/06

Abstract: A method of making a carbon fiber includes heat treating a lignin precursor absent an active ingredient in an inert atmosphere to raise the glass transition temperature (Tg) of the precursor by at least five (5%) percent, forming a lignin precursor having an increased Tg (High Tg Lignin). The High Tg Lignin can be spun into a fiber. The fiber may then be stabilized to form a thermoset fiber. The time period for stabilizing the fiber is less than one hundred (100) hours.

Abstract translation: 制备碳纤维的方法包括在惰性气氛中热处理没有活性成分的木质素前体，以将前体的玻璃化转变温度（Tg）提高至少五（5％）％，形成具有增加的木质素前体 Tg（高Tg木质素）。 高Tg木质素可以纺成纤维。 然后可以将纤维稳定以形成热固性纤维。 纤维稳定的时间不到一百（100）小时。