公开(公告)号：US09598795B2

公开(公告)日：2017-03-21

申请号：US14257383

申请日：2014-04-21

Applicant: Despatch Industries Limited Partnership

Inventor： Hans L. Melgaard

IPC: F27D7/00 ,  F27D7/02 ,  F27D7/04 ,  D02J13/00 ,  D01F9/32 ,  F27B17/00 ,  F27D99/00 ,  F27B3/04 ,  F27B3/20 ,  F27B3/22 ,  F27B3/28 ,  F27D17/00 ,  F27D19/00

CPC classification number: D01F9/322 ,  D01F9/32 ,  D01F9/324 ,  D01F9/328 ,  D02J13/001 ,  F27B3/04 ,  F27B3/045 ,  F27B3/20 ,  F27B3/22 ,  F27B3/28 ,  F27B17/00 ,  F27B17/0025 ,  F27B17/0075 ,  F27D7/02 ,  F27D11/00 ,  F27D17/004 ,  F27D19/00 ,  F27D99/0001 ,  F27D2019/0006 ,  F27D2099/0065

Abstract: One embodiment is directed to an oven for heating fibers. The oven comprises a plurality of walls forming a chamber and a supply structure disposed within the chamber between first and second ends of the chamber. The supply structure is in communication with a first heating system and is configured to direct heated gas from the first heating system into a first portion of the chamber. The supply structure is in communication with a second heating system and is configured to direct heated gas from the second heating system into a second portion of the chamber.

公开(公告)号：US20150376816A1

公开(公告)日：2015-12-31

申请号：US14736721

申请日：2015-06-11

Applicant: OCI COMPANY LTD.

Inventor： Kwang-Eui YOON ,  Hyun-Chul LEE ,  Hag-Cheon KIM

IPC: D01D5/26 ,  D01F9/12 ,  D01D5/08

CPC classification number: D01F9/322 ,  D10B2101/12

Abstract: The present invention relates to an apparatus for producing a pitch-based chopped carbon fiber and a producing method for the chopped fiber and, more specifically, to an apparatus and a method for drawing an ejected pitch using melt spinning and producing carbon fibers as chopped fibers in a continuous manner.

Abstract translation: 本发明涉及一种基于沥青的短切纤维的制造装置和短切纤维的制造方法，更具体地说，涉及使用熔融纺丝和生产碳纤维作为短切纤维来制造喷射沥青的装置和方法 以连续的方式。

公开(公告)号：US20030189965A1

公开(公告)日：2003-10-09

申请号：US10115694

申请日：2002-04-04

Inventor： Douglas J. Miller ,  Werner H. Ruoff ,  Allan Webster Intermill ,  Thomas R. Thoman ,  Richard L. Shao ,  Stephen L. Strong

IPC: F27D007/06

CPC classification number: F27B14/061 ,  D01F9/322 ,  F27D2009/0018 ,  F27D2099/002

Abstract: An induction furnace capable of operation at temperatures of over 3100null C. has a cooling assembly (60), which is selectively mounted to an upper end of the furnace wall (76). The cooling assembly includes a dome (62), which is actively cooled by cooling water coils (68). During the cool-down portion of a furnace run, cooling initially proceeds naturally, by conduction of heat away from the hot zone through a furnace insulation layer (58). Once the temperature within the furnace hot zone (20) reaches about 1500null C., a lifting mechanism (80), mounted to the dome, raises a cap (16) of the furnace slightly, allowing hot gases from the hot zone to mix with cooler gas in the dome. This speeds up cooling of the hot zone, reducing cool-down times significantly, without the need for encumbering the furnace itself with valves or other complex cooling mechanisms which have to be replaced periodically. The life of a graphite furnace susceptor (10) at the high operating temperature is increased by surrounding the susceptor with a barrier layer (40) of flexible graphite, which inhibits evaporation of the graphite. Additionally, witness disks (154), placed within the susceptor, provide an accurate temperature profile of the hot zone.

Abstract translation: 能够在超过3100℃的温度下操作的感应炉具有冷却组件（60），其被选择性地安装到炉壁（76）的上端。 冷却组件包括由冷却水盘管（68）主动冷却的圆顶（62）。 在炉膛的冷却部分期间，冷却最初自然地通过来自热区的热传导通过炉绝缘层（58）。 一旦炉热区（20）内的温度达到约1500℃，安装在穹顶上的提升机构（80）稍微升高炉膛（16），允许来自热区的热气混合 在圆顶中有较冷的气体。 这加快了热区的冷却，显着降低了冷却时间，而不需要用阀或其他必须定期更换的复杂冷却机构来堵住炉本身。 通过用柔性石墨的阻挡层（40）围绕基座来增加石墨炉基座（10）在高工作温度下的寿命，这抑制了石墨的蒸发。 此外，放置在基座内的见证盘（154）提供热区域的精确温度分布。

公开(公告)号：US5149517A

公开(公告)日：1992-09-22

申请号：US820734

申请日：1986-01-21

Applicant: Charles C. Fain ,  Danny D. Edie

Inventor： Charles C. Fain ,  Danny D. Edie

IPC: D01D5/253 ,  D01F9/14 ,  D01F9/145 ,  D01F9/155 ,  D01F9/22 ,  D01F9/32

CPC classification number: D01F9/14 ,  D01D5/253 ,  D01F9/155 ,  D01F9/22 ,  D01F9/32 ,  D01F9/322 ,  Y10T428/2918 ,  Y10T428/2973 ,  Y10T428/2975

Abstract: Hollow carbon fibers and carbon fibers having a generally C-shaped transverse cross-sectional area are produced by extruding a carbonaceous anisotropic liquid precursor through a spinneret having a capillary with a generally C-shaped cross-sectional area, into a fiber filament, controlling the viscosity of the molten precursor, the pressure of the molten precursor and the linear take-up speed of the filament to yield a fiber filament having a cross-sectional area shaped substantially like the shape of the cross-sectional area of the capillary and further having a line-origin microstructure, rendering the filament infusible, heating the filament in an inert pre-carbonizing environment at a temperature in the range of 600.degree. C. to 1000.degree. C. for 1 to 5 minutes, and heating the filament in an inert carbonizing environment at a temperature in the range of 1550.degree. C. to 1600.degree. C. for 5 to 10 minutes, to substantially increase the tensile strength of the filament. The carbon fiber filament so produced has a line-origin microstructure in which the origin line is located and shaped substantially as a line which constitutes the line formed by uniformly collapsing the perimeter of the transverse cross-sectional area of the fiber filament upon itself. The carbon fiber filament has a tensile strength greater than 200 ksi and as high as the 700 to 800 ksi range, yet a modulus of elasticity on the order of 25-35 msi. The top to bottom outside diameter of the fiber's transverse cross-sectional area is on the order of 30 to 50 microns, and the wall thicknesses are on the order of 8 to 15 microns.

Abstract translation: 通过将碳质各向异性液体前体通过具有大致C形横截面积的毛细管的喷丝头挤出到纤维丝中来制造具有大致C形横截面积的中空碳纤维和碳纤维，从而控制 熔融前体的粘度，熔融前体的压力和丝的线性吸收速度，以产生纤维长丝，该纤维长丝的截面积基本上类似于毛细管的横截面积的形状，并且还具有 线源微结构，使细丝不熔，在惰性预碳化环境中在600℃至1000℃的温度范围内加热丝，持续1至5分钟，并将惰性物质加热至惰性 碳化环境在1550℃至1600℃的温度下进行5至10分钟，以显着提高长丝的拉伸强度。 如此制造的碳纤维丝具有线状微结构，其中原点线基本上定位成线，该线构成通过将纤维丝的横截面积的周长均匀地折叠在其自身上而形成的线。 碳纤维长丝的拉伸强度大于200ksi，高达700至800ksi的范围，弹性模量为25-35毫秒。 纤维横向横截面积的顶部到底部的外径约为30至50微米，壁厚约为8至15微米。

公开(公告)号：US4927620A

公开(公告)日：1990-05-22

申请号：US789590

申请日：1985-10-21

Applicant: Clifford Ward ,  Eugene Chao ,  Roy E. Booth ,  Frank H. Turrill ,  Robert H. Wombles ,  John W. Newman ,  William P. Hettinger, Jr.

Inventor： Clifford Ward ,  Eugene Chao ,  Roy E. Booth ,  Frank H. Turrill ,  Robert H. Wombles ,  John W. Newman ,  William P. Hettinger, Jr.

IPC: C10C3/00 ,  D01F9/155 ,  D01F9/32

CPC classification number: C10C3/002 ,  D01F9/155 ,  D01F9/322

Abstract: Disclosed herein is an improved pitch for making readily stabilizable, substantially nonmesophasic carbon fibers. The pitch has a softening point of about 250.degree. C. (480.degree. F.) or above and is produced from an unoxidized thermal petroleum pitch by selectively reducing or eliminating a portion of the low molecular weight materials in a very short period of time so that the tendency to produce mesophase pitch is eliminated or reduced and so that the chemical integrity of the components of the higher molecular weight fractions is preserved as much as possible. Also disclosed is a method of producing carbon fibers therefrom and rovings or mats from such fibers.

Abstract translation: 本文公开了用于制备容易稳定的，基本上非中性的碳纤维的改进沥青。 沥青具有约250℃（480°F）或更高的软化点，并通过在非常短的时间内选择性还原或除去一部分低分子量材料而由未氧化的热石油沥青生产，因此 消除或减少产生中间相沥青的趋势，并且尽可能地保持较高分子量级分的组分的化学完整性。 还公开了从这种纤维生产碳纤维的方法和粗纱或垫子。

公开(公告)号：US4923648A

公开(公告)日：1990-05-08

申请号：US245564

申请日：1988-09-19

Applicant: Ryuichi Hara ,  Masami Kagizaki ,  Tsuyoshi Takakura ,  Shigeki Tomono

Inventor： Ryuichi Hara ,  Masami Kagizaki ,  Tsuyoshi Takakura ,  Shigeki Tomono

IPC: D01D4/00 ,  D01F9/00 ,  D01F9/145 ,  D01F9/32

CPC classification number: D01F9/00 ,  D01D4/00 ,  D01F9/145 ,  D01F9/322 ,  Y10T428/2918 ,  Y10T428/2973

Abstract: A carbon fiber having a cross-sectional structure of regular mesh form orientation as observed by a polarizing microscope is produced by a method comprising melt spinning pitch material through spinning nozzles, followed by infusible treatment and carbonization, wherein a mesh filter layer is provided at an upstream portion of each nozzle, and the pitch material is passed first through the mesh filter layer and then through the nozzle for spinning.

公开(公告)号：US4913889A

公开(公告)日：1990-04-03

申请号：US119602

申请日：1987-11-12

Applicant: Yasuyuki Takai ,  Minoru Takabatake ,  Hideyuki Nakajima ,  Katsumi Takano ,  Masami Watanabe

Inventor： Yasuyuki Takai ,  Minoru Takabatake ,  Hideyuki Nakajima ,  Katsumi Takano ,  Masami Watanabe

IPC: D01D4/00 ,  D01D4/02 ,  D01F9/00 ,  D01F9/145 ,  D01F9/155 ,  D01F9/32

CPC classification number: D01D4/02 ,  D01D4/00 ,  D01F9/00 ,  D01F9/145 ,  D01F9/155 ,  D01F9/322

Abstract: High strength, high modulus carbon fibers derived from high mesophase content pitch, having a plurality of sheets formed of planes of hexagonal carbon networks oriented, in the direction of the fiber axis and having a cross-sectional arrangement which does not carbonize to a graphitic structure are characterized by electron and X-ray diffraction pattern wherein the (10) band is not resolved into (100) and (101) lines, by an interlayer spacing greater than 3.38 angstrom and by negative magnetic resistivity when composed to graphitized fibers.

Abstract translation: 由高中间相含量沥青得到的高强度，高模量碳纤维，具有沿着纤维轴线的方向由六方碳网络的平面形成的多个片材，并且具有不碳化到石墨结构的横截面布置 其特征在于电子和X射线衍射图，其中（10）带没有被分解成（100）和（101）线，层间距大于3.38埃，当由石墨化纤维构成时，具有负的磁阻。

公开(公告)号：US4606903A

公开(公告)日：1986-08-19

申请号：US603029

申请日：1984-04-27

Applicant: Mahmoud M. Hafez ,  Laura E. Black

Inventor： Mahmoud M. Hafez ,  Laura E. Black

IPC: B01D61/02 ,  B01D61/08 ,  C10C3/00 ,  D01F9/145 ,  D01F9/32 ,  D01F9/12

CPC classification number: D01F9/322 ,  B01D61/025 ,  B01D71/64 ,  C10C3/00 ,  D01F9/145

Abstract: Flux solvents and/or pitch neomesophase anti-solvents used in the generation of carbon fiber precursors from pitch are separated from mixtures of such solvent and uncoverted carbon fiber precursors by contacting said mixtures with asymmetric hydrophobic membranes under conditions of reverse osmosis. The membranes used in this separation are asymmetric polyimide membranes and asymmetric polyvinylidene fluoride membranes. Separation conditions include a contacting pressure sufficient to overcome the osmotic pressure of the solvent. The pressure is typically about 300 to 1000 psi. Contacting temperature is about 0.degree. to 100.degree. C., preferably about 20.degree. to 80.degree. C. The membrane of choice is an asymmetric polyimide membrane.

Abstract translation: 通过在反渗透条件下使所述混合物与不对称疏水膜接触，将从沥青产生碳纤维前体所用的助熔溶剂和/或沥青新单体相溶剂与这些溶剂和未转化的碳纤维前体的混合物分离。 在这种分离中使用的膜是不对称聚酰亚胺膜和不对称聚偏二氟乙烯膜。 分离条件包括足以克服溶剂的渗透压的接触压力。 压力通常为约300至1000psi。 接触温度约为0℃至100℃，优选约20℃至80℃。所选择的膜为不对称聚酰亚胺膜。

公开(公告)号：US4529498A

公开(公告)日：1985-07-16

申请号：US507584

申请日：1983-06-24

Applicant: Masami Watanabe

Inventor： Masami Watanabe

IPC: C10C3/00 ,  D01F9/155 ,  D01F9/32

CPC classification number: C10C3/002 ,  D01F9/155 ,  D01F9/322

Abstract: A method for producing a 100% mesophase pitch composed only of Q.I. and Q.S. components is provided. This method comprises subjecting petroleum-origin pitch to heat treatment with stirring under a stream of a hydrocarbon gas of small carbon atom numbers at atmospheric or superatmospheric pressure, holding said heat-treated pitch in quiescent state to melt and coalesce only the mesophase therein and dividing and separating non-mesophase and mesophase layers. Resulting 100% mesophase enables us to produce high strength, high modulus carbon fibers.

Abstract translation: 一种生产仅由Q.I.组成的100％中间相沥青的方法。 和Q。 提供组件。 该方法包括在大气压或超大气压力下，在碳原子数小的碳氢化合物气流下在搅拌下对石油原料沥青进行热处理，将所述经热处理的沥青保持在静止状态，仅熔化和聚结其中的中间相， 并分离非中间相和中间相层。 产生的100％中间相使我们能够生产高强度，高模量的碳纤维。

公开(公告)号：US4460454A

公开(公告)日：1984-07-17

申请号：US456453

申请日：1983-01-07

Applicant: Hiroshi Iijima ,  Kunihiko Moriya ,  Kazuhito Tate ,  Goro Muroga ,  Kazuhiro Yanagida ,  Yoshikazu Nakamura ,  Akiyoshi Inoue ,  Masahiro Higashi

Inventor： Hiroshi Iijima ,  Kunihiko Moriya ,  Kazuhito Tate ,  Goro Muroga ,  Kazuhiro Yanagida ,  Yoshikazu Nakamura ,  Akiyoshi Inoue ,  Masahiro Higashi

IPC: C10C3/02 ,  C10C3/00 ,  C10C3/04 ,  C10C3/08 ,  C10C3/10 ,  D01F9/155 ,  D01F9/32 ,  C10C3/06

CPC classification number: D01F9/155 ,  C10C3/00 ,  D01F9/322

Abstract: A process for producing a pitch which is used as a raw material for producing carbon fibers is disclosed. The process comprises subjecting a petroleum heavy residual oil to hydrogenation treatment in the presence of catalysts, removing a low boiling point fraction of the oil by reduced pressure distillation, subjecting the resulting reduced pressure distillation residual oil to solvent extraction treatment, and carrying out thermal modification of the resulting extraction component.By utilizing the process for producing the pitch it is possible to use a wide variety of different types of oils in order to produce carbon fibers. The carbon fibers produced from the pitch produced according to the disclosed process have desirable characteristics.

Abstract translation: 公开了一种生产用作生产碳纤维原料的沥青的方法。 该方法包括在催化剂存在下对石油重残余油进行氢化处理，通过减压蒸馏除去油的低沸点馏分，对所得减压蒸馏残油进行溶剂萃取处理，进行热改性 的所得提取组分。 通过利用制造沥青的方法，可以使用多种不同类型的油来生产碳纤维。 由根据所公开的方法生产的沥青产生的碳纤维具有期望的特性。