公开(公告)号：US3840649A

公开(公告)日：1974-10-08

申请号：US19369671

申请日：1971-10-29

申请人： DOW CHEMICAL CO

发明人： FEAY D ,  LEDBETTER H

IPC分类号： C01B31/00 ,  D01F9/21 ,  C01B31/04 ,  C01B31/07

CPC分类号： D01F9/21 ,  C01B32/00

摘要： 1. A PROCESS FOR PREPARING A CARBONACEOUS FIBER FROM A VINYLIDENE CHLORIDE POLYMER FILAMENT COMPRISING THE SEQUENTIAL STEPS OF: (1) TREATING SAID VINYLIDENE CHLORIDE POLYMER FILAMENT WITH AN ORGANIC AMINE HAVING THE FORMULA R-NH2 WHEREIN R IS ALKYL CONTAINING FROM 1 TO 4 CARBON ATOMS AT A TEMPERATURE LESS THAN ABOUT 125*C. IN THE ESSENTIAL ABSENCE OF MOISTURE UNTIL SAID FILAMENT IS FROM ABOUT 25 TO 80 PERCENT DEHYDROHALOGENATED BYT WUTHO OUT SIGNIFICANT LOSS IN FILAMENT STRUCTURAL INTEGRITY, AND (2) CARBONIZING SAID FILAMENT BY SUBJECTING THE SAME TO A TEMPERATURE WHICH IS INCREASED FROM AN INITIAL VALUE OF AT LEAST ABOUT 90*C. TO A FINAL VALUE OF UP TO ABOUT 1500*C. OVER A PERIOD OF AT LEAST 5 MINUTES.

公开(公告)号：US3048467A

公开(公告)日：1962-08-07

申请号：US84049959

申请日：1959-09-15

申请人： UNION CARBIDE CORP

发明人： ROBERTS JOHN S ,  WALTER ANDREW T

IPC分类号： D01D5/08 ,  D01D5/12 ,  D01D10/04 ,  D01F6/04 ,  D01F9/21 ,  D02J1/22

CPC分类号： D02J1/228 ,  D01D5/08 ,  D01D5/14 ,  D01F6/04 ,  D02J1/22 ,  Y10S264/28

公开(公告)号：US20240271336A1

公开(公告)日：2024-08-15

申请号：US18433877

申请日：2024-02-06

申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

发明人： Takuya Morishita ,  Mitsumasa Matsushita

IPC分类号： D01F9/21

CPC分类号： D01F9/21

摘要： A means for resolution is a carbon fiber precursor containing a crosslinked diene-based polymer and having a gel fraction of 40% or more, and its application.

公开(公告)号：US11879205B2

公开(公告)日：2024-01-23

申请号：US17905118

申请日：2021-06-02

申请人： TAKEMOTO YUSHI KABUSHIKI KAISHA

发明人： Kohei Oda ,  Hiroki Honda

IPC分类号： D06M13/252 ,  D01F9/21 ,  D06M15/643 ,  D06M101/26

CPC分类号： D06M13/252 ,  D01F9/21 ,  D06M15/6436 ,  D06M2101/26 ,  D06M2200/40

摘要： The present invention addresses the problem of suitably improving a treatment agent for a carbon fiber precursor in terms of the heat resistance and the effect of suppressing fusion between fibers during the step of flame-resisting treatment. This treatment agent for a carbon fiber precursor is characterized by containing a lubricant, the lubricant comprising a specific sulfur-containing diester compound and a specific sulfur-containing monoester compound.

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：US20220251736A1

公开(公告)日：2022-08-11

申请号：US17291112

申请日：2019-11-07

申请人： Toray Industries, Inc.

发明人： Kohei Takamatsu ,  Yusuke Kuji ,  Naoto Hosotani ,  Taku Yamamoto ,  Kazuyuki Gondo

IPC分类号： D01F9/21 ,  D01F9/32 ,  C01B32/05

摘要： A method of producing an oxidized fiber bundle includes heat-treating an acrylic fiber bundle aligned in a heat treatment chamber in which hot air is circulated while causing the acrylic fiber bundle to run on direction-changing rollers disposed on both ends of an outside of the heat treatment chamber, wherein first hot air is supplied in a direction substantially parallel to a running direction of the acrylic fiber bundle, and second hot air is supplied from above the acrylic fiber bundle at an angle of 20 to 160° with respect to a wind direction of the first hot air, so that the second hot air passes at least a part of a running acrylic fiber bundle in a longitudinal direction.

公开(公告)号：US20220213620A1

公开(公告)日：2022-07-07

申请号：US17608989

申请日：2020-11-13

申请人： ZHEJIANG UNIVERSITY

发明人： CHAO GAO ,  Jiaqing WANG

IPC分类号： D01F9/21 ,  D01D5/00

摘要： The present invention discloses a method for preparing graphene nanofibers and non-woven fabrics using a fluid with a ultra-high draw ratio by means of a high-voltage electrospinning method. Compared with other methods for preparing graphene fibers (such as wet spinning, air-assisted spinning, etc.), the graphene fibers obtained by the present method have smaller diameters (about 100 nm to 500 nm) and a higher yield. The fibers themselves have better mechanical and electrical properties. The invention discloses a method for preparing ultra-fine graphene nanofibers and non-woven fabrics by electrospinning a mixed spinning liquid system of polymer and graphene oxide (the polymer is sodium polyacrylate). This method is highly efficient and environmentally friendly, and the resulted graphene nanofibers are the thinnest graphene fibers as currently known.

公开(公告)号：US20220170182A1

公开(公告)日：2022-06-02

申请号：US17398191

申请日：2021-08-10

申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takuya MORISHITA ,  Mamiko NARITA ,  Mitsumasa MATSUSHITA ,  Hideyasu KAWAI ,  Nozomu SHIGEMITSU

IPC分类号： D01F9/21 ,  C01B32/318 ,  C08F20/56

摘要： A carbon fiber precursor fiber bundle includes: acrylamide-based polymer fibers, wherein the carbon fiber precursor fiber bundle contains single fibers having a circular cross section in a proportion of 30 to 100%, wherein the circular cross section has a ratio of a major axis to a minor axis of 1.0 to 1.3 in a cross section orthogonal to a longitudinal direction of the single fiber, and a fineness of the single fiber is 0.1 to 7 dtex.

公开(公告)号：US20210395531A1

公开(公告)日：2021-12-23

申请号：US17465645

申请日：2021-09-02

申请人： UNM Rainforest Innovations

发明人： Richard Alan Kemp ,  Mahmoud Reda Taha

IPC分类号： C09C1/48 ,  C08F120/44 ,  D01F1/10 ,  D01F9/22 ,  D01F9/21 ,  D01F9/127

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：US10988862B2

公开(公告)日：2021-04-27

申请号：US16074685

申请日：2017-01-31

申请人： TOHO TENAX CO., LTD.

发明人： Fumio Akiyama ,  Tadayuki Aoyama ,  Ichiro Kitano

IPC分类号： D01F9/21 ,  D02J1/08 ,  D01F9/22 ,  D01F9/32 ,  B65H69/06 ,  D01D10/02

摘要： A carbon fiber manufacturing method includes joining first and second target fiber bundles with a joining fiber bundle, and carbonizing the joined bundles by feeding them through one or more carbonization furnaces. The joining includes forming an overlap between a first end of the joining fiber bundle and a second end of the first target fiber bundle and jetting a fluid to the overlap to form a first entangled portion, and forming an overlap between a second end of the joining fiber bundle and a first end of the second target fiber bundle and jetting a fluid to the overlap to form a second entangled portion. When the first and second entangled portions each have two or more entangling points with a tensile strength not less than 400 N, the relationship defined by the inequality is satisfied: 40>{L2/(L2−A)}×(S+13), where L2 is a length (mm) of an elongation section inside a first carbonization furnace upstream in a feeding direction of the fiber bundles, A is a maximum distance (mm) between an entangling point in the first entangled portion and an entangling point in the second entangled portion, and S is an elongation (%) of the joined fiber bundles fed through the carbonization furnace.