公开(公告)号：US20240141559A1

公开(公告)日：2024-05-02

申请号：US17769279

申请日：2020-10-19

Applicant: TANGOLD INC.

Inventor： Weixing CHEN

IPC: D01F9/155 ,  D01D5/084 ,  D01D7/00

CPC classification number: D01F9/155 ,  D01D5/084 ,  D01D7/00 ,  D10B2101/12

Abstract: A method of fabricating carbon fibers includes the steps of: (a) melting asphaltene solids in a sealed vessel; (b) spinning melted asphaltenes to fabricate green fibers; (c) stabilizing the green fibers; (d) carbonizing the stabilized green fibers; and (e) optionally graphitizing carbonized fibers.

公开(公告)号：US20170175001A1

公开(公告)日：2017-06-22

申请号：US15300703

申请日：2016-04-22

Applicant: YUSUNG TELECOM CO., LTD.

Inventor： Sung Ho YOON ,  Seong Hwa HONG ,  Suk Jun YU

IPC: C10C3/02 ,  D01F6/76 ,  C08G61/10 ,  C10C3/00 ,  D01F9/15 ,  D01F9/155

CPC classification number: C10C3/026 ,  C08G61/10 ,  C08G2261/314 ,  C10C3/00 ,  C10C3/002 ,  D01F6/76 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155 ,  H01M4/587 ,  H01M4/625

Abstract: Provided are a method of preparing a high softening point pitch and the high softening point pitch prepared thereby, in which a polyene radical intermediate is formed, and an alkylaromatic radial material is linearly linked to the polyene radical intermediate in a benzyl or methylene form to be polymerized. The method includes performing heat treatment by adding a compound, which is able to a polyene radical intermediate, to 1- to 4-ring alkylaromatic condensates to produce a basic pitch, and performing vacuum heat treatment for the basic pitch.

公开(公告)号：US07018526B1

公开(公告)日：2006-03-28

申请号：US09998938

申请日：2001-11-30

Applicant: Avraam I. Isayev ,  Kyungwoo Choi

Inventor： Avraam I. Isayev ,  Kyungwoo Choi

IPC: C10C3/00

CPC classification number: C10C3/002 ,  D01F9/155

Abstract: The present invention provides carbonized pitch articles and methods for producing the same. Synthetic mesophase pitch is mixed with partially anisotropic pitch, which may be selected from heat-soaked isotropic pitch and heat-soaked mixtures of isotropic pitch and mesophase pitch. In producing carbon moldings, the mesophase pitch is first stabilized to make it at least partially infusible, prior to mixing. In producing carbon fibers, the mesophase pitch will not typically be stabilized before mixing, rather, the resultant pitch fiber, produced from the mixture, will be stabilized by oxidation and air. The resultant fibers and moldings are carbonized according to conventional methods.

Abstract translation: 本发明提供碳化沥青制品及其制造方法。 合成中间相沥青与部分各向异性沥青混合，其可以选自热浸各向同性沥青和各向同性沥青和中间相沥青的热浸混合物。 在生产碳模制品时，首先将中间相沥青稳定，使其至少部分不熔化，然后再混合。 在生产碳纤维时，中间相沥青在混合前通常不会稳定，而是由混合物产生的沥青纤维将通过氧化和空气而稳定。 根据常规方法将所得纤维和模制品碳化。

公开(公告)号：US06730731B2

公开(公告)日：2004-05-04

申请号：US09943006

申请日：2001-08-31

Applicant: Masayuki Tobita ,  Natsuko Ishihara ,  Naoyuki Shimoyama ,  Shinya Tateda

Inventor： Masayuki Tobita ,  Natsuko Ishihara ,  Naoyuki Shimoyama ,  Shinya Tateda

IPC: C08J300

CPC classification number: D01F9/145 ,  C08K7/06 ,  C08K9/02 ,  D01F9/15 ,  D01F9/155 ,  H01L23/3737 ,  H01L23/433 ,  H01L24/48 ,  H01L2224/05599 ,  H01L2224/16 ,  H01L2224/16225 ,  H01L2224/16227 ,  H01L2224/32245 ,  H01L2224/45099 ,  H01L2224/48247 ,  H01L2224/73253 ,  H01L2224/85399 ,  H01L2924/00014 ,  H01L2924/01012 ,  H01L2924/01019 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/12042 ,  H01L2924/181 ,  H01L2924/00 ,  H01L2924/00012 ,  H01L2224/45015 ,  H01L2924/207

Abstract: A thermally conductive polymer composition includes polymer matrix such as thermoplastic resin or thermoplastic elastomer and a graphitized carbon fiber which serves as a thermally conductive filler. The graphitized carbon fiber is made from a mesophase pitch. The mesophase pitch is spun, infusibilized, carbonized, pulverized, and graphitized to form powdery graphitized carbon fibers. Preferably, the graphitized carbon fibers have a diameter of 5-20 &mgr;m, an average particle size of 10-500 &mgr;m, and a density of 2.20-2.26 g/cm3. The composition may be molded to form a thermally conductive molded article such as a thermally conductive sheet. The thermally conductive polymer composition and thermally conductive molded article have high thermal conductivity and transfer large amounts of heat from electric or electronic parts.

Abstract translation: 导热聚合物组合物包括聚合物基质，例如热塑性树脂或热塑性弹性体，以及用作导热填料的石墨化碳纤维。 石墨化碳纤维由中间相沥青制成。 将中间相沥青纺丝，不熔化，碳化，粉碎和石墨化，形成粉状石墨化碳纤维。 优选石墨化碳纤维的直径为5-20μm，平均粒径为10-500μm，密度为2.20-2.26g / cm 3。 组合物可以被模制以形成导热模制品，例如导热片。 导热聚合物组合物和热导成型制品具有高导热性并且从电子或电子部件传递大量的热量。

公开(公告)号：US5446005A

公开(公告)日：1995-08-29

申请号：US79819

申请日：1993-06-22

Applicant: Morinobu Endo

Inventor： Morinobu Endo

IPC: B01J20/20 ,  B82Y30/00 ,  B82Y99/00 ,  C10C3/02 ,  D01F9/14 ,  D01F9/145 ,  D01F9/155 ,  D06M23/00 ,  D06M101/00 ,  D06M101/40 ,  H01G11/22 ,  H01G11/24 ,  H01G11/40 ,  H01G11/44

CPC classification number: D01F9/155 ,  D01F9/145

Abstract: There is disclosed an optically isotropic pitch-based activated carbon fiber which has a proportion of the number of ultramicropores with a pore diameter of 0.5 nm or smaller to the total number of pores with a pore diameter of 4 nm or smaller being at least 70%; a specific surface area of 500 to 3000 m.sup.2 /g; and the pores consisting substantially only of the pores with a pore diameter of 4 nm or smaller, which are allowed to three-dimentionally communicate with at least a part of the surrounding pores and are distributed with an almost uniform density throughout the fiber including the surface layer part and the inner part of the fiber. The above activated carbon fiber has a high adsorption efficiency without decrease in mechanical strength and is effectively utilized as adsorbents for low molecular organic compounds and inorganic compounds, adsorbents for trace amounts of radioactive substances, catalyst carriers, electrodes for secondary batteries, etc.

Abstract translation: 公开了一种光学各向同性沥青基活性炭纤维，其具有孔径为0.5nm以下的孔径比为孔径为4nm以下的孔的总数的比例为至少70％以上的超微孔数， ; 比表面积为500〜3000m2 / g; 并且所述孔基本上仅由具有4nm或更小孔径的孔组成，其允许与周围孔的至少一部分三维连通，并且在包括表面的整个纤维中以几乎均匀的密度分布 层部分和纤维的内部。 上述活性炭纤维吸附效率高，机械强度不降低，有效地用作低分子有机化合物和无机化合物的吸附剂，微量放射性物质的吸附剂，催化剂载体，二次电池用电极等。

公开(公告)号：US5061413A

公开(公告)日：1991-10-29

申请号：US516105

申请日：1990-04-27

Applicant: Seiichi Uemura ,  Hiroaki Takashima ,  Osamu Kato

Inventor： Seiichi Uemura ,  Hiroaki Takashima ,  Osamu Kato

IPC: D01F9/155

CPC classification number: D01F9/155

Abstract: A pitch-based carbon fiber having a high strength is produced by (a) treating a heavy oil at a temperature of 370.degree. to 480.degree. C. and a pressure of 2 to 50 kg/cm.sup.2 ; (b) separating and removing insoluble solids from the heat-treated oil so that the insoluble solids content is not higher than 50 ppm; (c) subjecting the oil to thin film distillation at a temperature of 250.degree. to 450.degree. C., a pressure of not higher than 100 mm Hg and a film thickness of not larger than 5 mm; (d) heat-treating the resulting pitch at a temperature of 340.degree. to 450.degree. C. while passing an inert gas at atmospheric or reduced pressure to obtain an optically anisotropic pitch having a softening point of 260.degree. to 300.degree. C., a quinoline insolubles content of not higher than 40 wt % and an optically anisotropic phase content of 60 to 100 vol %; (e) melt-spinning said optically anesotropic pitch in a melt-spinning apparatus having a nozzle with a vertically longer molded product disposed therein, at a temperature of 280.degree. to 360.degree. C. and a spinning viscosity of 300 to 3,000 poise; (f) rendering the resulting pitch fiber infusible and (g) calcining the infusibilized fiber in an inert gas atmosphere, initially at a temperature of 650.degree. to 850.degree. C. and subsequently conducting calcination at a temperature of 1,200.degree. to 3,000.degree. C.

Abstract translation: 通过（a）在370℃至480℃的温度和2至50kg / cm2的压力下处理重油来生产具有高强度的沥青类碳纤维; （b）从热处理油中分离除去不溶性固体，使不溶性固体含量不高于50ppm; （c）在250〜450℃的温度，不高于100mmHg的压力和不大于5mm的膜厚下对油进行薄膜蒸馏; （d）在340〜450℃的温度下对所得沥青进行热处理，同时在大气压或低压下通过惰性气体，得到软化点为260〜300℃的光学各向异性沥青， 喹啉不溶物含量不高于40重量％，光学各向异性相含量为60至100体积％; （e）在280℃至360℃的温度和300至3,000泊的纺丝粘度的熔融纺丝设备中熔融纺丝所述光学无意间沥青，其中所述熔融纺丝设备具有设置在其中的垂直较长成型体的喷嘴; （f）使所得的沥青纤维不熔融，（g）在惰性气体气氛中煅烧不熔化的纤维，最初在650℃至850℃的温度下进行煅烧，随后在1200℃至3000℃的温度下进行煅烧。

公开(公告)号：US5037589A

公开(公告)日：1991-08-06

申请号：US438736

申请日：1989-11-17

Applicant: Teruo Iwashita ,  Yutaka Arai ,  Hirofumi Sunago ,  Tadao Tomioka

Inventor： Teruo Iwashita ,  Yutaka Arai ,  Hirofumi Sunago ,  Tadao Tomioka

IPC: D01D4/02 ,  D01F9/00 ,  D01F9/155

CPC classification number: D01F9/155 ,  D01D4/02 ,  D01F9/00

Abstract: In a method of producing mesophase pitch based carbon fibers, including the steps of melt-spinning a mesophase pitch through a nozzle (1) having at least one pair of a counter-bore (2) and a circular capillary (3) to form a pitch fiber and subjecting the pitch fiber to an infusible treatment, a carbonization treatment, and if necessary, a graphitization treatment, to form a carbon fiber, the nozzle has a degree of asymmetry .phi. of from 0.1 to 0.9, .phi. being defined by the following equation .phi.=S.sub.A /S.sub.B, wherein S.sub.A is an area of an inscribed circle in a contour of the cross-section of the counter-bore, which circles is perpendicular to the nozzle axis and has a center on the axis of the capillary and inscribed and S.sub.B is a total area of the cross-section of the counter-bore.

Abstract translation: 在制备中间相沥青基碳纤维的方法中，包括通过具有至少一对反孔（2）和圆形毛细管（3）的喷嘴（1）熔融纺丝中间相沥青的步骤，以形成 沥青纤维，并对沥青纤维进行不可渗透处理，碳化处理，如果需要，进行石墨化处理，形成碳纤维，喷嘴的不对称phi为0.1〜0.9，phi由下述定义 方程phi = SA / SB，其中SA是反孔的横截面轮廓中的内接圆的面积，其圆与垂直于喷嘴轴线并且在毛细管的轴线上具有中心 SB是反孔的横截面的总面积。

公开(公告)号：US4818449A

公开(公告)日：1989-04-04

申请号：US818499

申请日：1986-01-13

Applicant: Yasuhiro Yamada ,  Takeshi Imamura ,  Hidemasa Honda ,  Masatoshi Tsuchitani ,  Ryoichi Nakajima

Inventor： Yasuhiro Yamada ,  Takeshi Imamura ,  Hidemasa Honda ,  Masatoshi Tsuchitani ,  Ryoichi Nakajima

IPC: D01F9/14 ,  C10C1/00 ,  D01D4/02 ,  D01D4/06 ,  D01F6/00 ,  D01F9/00 ,  D01F9/155 ,  D01F9/32 ,  D01F9/12

CPC classification number: D01F9/155 ,  C10C1/00 ,  D01D4/06 ,  D01F9/00 ,  D01F9/322

Abstract: When preparing carbon fibers from mesophase pitches, we usually encounter to the formation of cracks along the fiber axis. The crack formation is the most serious and troublesome problem. A simple process which can effectively prevent the crack formation comprises preparing the carbon fibers from mesophase pitches by melt spinning sufficient only to give a rotatory motion to the molten mesophase pitches just before extrusion substantially around the axis of a spinning nozzle hole. The process employs a usual nozzle plate having a pitch introducing tube and a spinning nozzle hole further containing a plug member having an outer spiral groove such as a drill point or a worm gear which is inserted within the pitch introducing tube.

Abstract translation: 当从中间相沥青制备碳纤维时，我们通常会遇到沿着纤维轴形成裂纹。 裂缝形成是最严重和最麻烦的问题。 可以有效地防止裂纹形成的简单方法包括通过熔融纺丝从中间相沥青制备碳纤维，其仅足以在基本上围绕纺丝喷嘴孔的轴线挤出之前对熔融的中间相沥青进行旋转运动。 该方法采用具有沥青引入管和纺丝喷嘴孔的通常喷嘴板，该喷嘴孔还包含插入在沥青引入管中的具有诸如钻头或蜗轮的外螺旋槽的塞构件。

公开(公告)号：US4775589A

公开(公告)日：1988-10-04

申请号：US880976

申请日：1986-07-01

Applicant: Takeshi Hamada ,  Tokuhiko Nishida ,  Yasunori Sajiki ,  Mitsuaki Matsumoto

Inventor： Takeshi Hamada ,  Tokuhiko Nishida ,  Yasunori Sajiki ,  Mitsuaki Matsumoto

IPC: D01F9/15 ,  D01F9/155 ,  B32B9/00 ,  D01F9/12 ,  D02G3/00

CPC classification number: D01F9/15 ,  D01F9/155 ,  Y10T428/2918 ,  Y10T428/2973

Abstract: This invention relates to a coaltar pitch based carbon fiber having a high Young's modulus produced by using coaltar pitch as a starting material, which has a microstructure with a preferred orientation parameter (HWHM) of 10.degree. or less, a crystallite size (Lc(002)) of not more than 25 nm and not less than 18 nm and an interlayer spacing (d002) of not more than 0.345 nm and not less than 0.338 nm as determined by X-ray diffraction, and has a magnetoresistance of less than -0.40% and not less than -2.00% as measured by applying a magnetic field of 10 KG perpendicular to the fiber axis at liquid nitrogen temperature, and a Young's modulus of 55 ton.multidot.mm.sup.-2 or more, preferably 75 ton.multidot.mm.sup.-2 or more. The carbon fiber of this invention has a high Young's modulus, is flexible, and does not split in the fiber axis direction, and therefore it is easy to handle, is good in workability, and contributed also to improvement of the production efficiency. Further, when the carbon fiber of this invention is used in composite material, the resulting composite material can be expected to have an improved impact strength and hence can be used for various purposes.

Abstract translation: 本发明涉及以直径为原料制造的具有高杨氏模量的直立沥青基碳纤维，其具有优选取向参数（HWHM）为10以下的微结构，微晶尺寸（Lc（002） ）），通过X射线衍射测定为不大于25nm且不小于18nm，层间距（d002）不大于0.345nm且不小于0.338nm，并且具有小于-0.40的磁电阻 通过在液氮温度下垂直于纤维轴施加10Kg的磁场，并且杨氏模量为55吨×2mm以上，优选为75吨×2mm以上的杨氏模量测定的百分比不小于-2.00％。 本发明的碳纤维具有高的杨氏模量，柔软性，并且在纤维轴线方向上不分裂，因此易于处理，加工性好，并且还有助于提高生产效率。 此外，当本发明的碳纤维用于复合材料时，可以预期所得的复合材料具有改进的冲击强度，因此可用于各种目的。

公开(公告)号：US4548704A

公开(公告)日：1985-10-22

申请号：US646498

申请日：1984-09-04

Applicant: Ghazi B. Dickakian

Inventor： Ghazi B. Dickakian

IPC: C10C3/00 ,  D01F9/155 ,  D01F9/14

CPC classification number: D01F9/155 ,  C10C3/00

Abstract: A pitch suitable for carbon fiber manufacture features a pitch having a weight content of between 80 and 100 percent toluene insolubles and greater than about 10 percent quinoline insolubles. The pitch is derived from a deasphaltenated middle fraction of a feedstock. The pitch is characterized as being relatively free of impurities and ash. The pitch can be spun directly into carbon fibers.

Abstract translation: 适用于碳纤维制造的沥青具有重量含量为80-100％甲苯不溶物和大于约10％喹啉不溶物的沥青。 沥青来自原料的脱沥青中间馏分。 沥青的特征是相对没有杂质和灰分。 沥青可以直接纺成碳纤维。