-
公开(公告)号：US5047292A
公开(公告)日：1991-09-10
申请号：US281245
申请日：1988-12-07
Applicant: Jiro Sadanobu , Akihiro Ohba , Tsutomu Nakamura
Inventor： Jiro Sadanobu , Akihiro Ohba , Tsutomu Nakamura
CPC classification number: D01F9/145 , Y10T428/2913 , Y10T428/2918 , Y10T428/2973 , Y10T428/2976
Abstract: A pitch-based carbon fiber having a microstructure consisting of strip-like structural units extended in the longitudinal direction of the fiber, wherein the fractal dimension D of the arrangement of the strip-like structural units in the cross-section of the fiber has a fractal structure satisfying the requirement of the following formula (2) relatively to the observation scale r satisfying the requirement of the following formula (1) with respect to the cross-section of the fiber:E/2.5>r>E/25 (1)2.0>D>1.05 (2)wherein E in the formula (1) stands for a smallest principal radius of gyration of cross-sectional area of the cross-section of the fiber.
-
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.
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
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
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：US4820905A
公开(公告)日：1989-04-11
申请号：US71448
申请日：1987-07-09
Applicant: Yoshikazu Iwata , Makoto Sugiyama , Motohisa Miyauchi
Inventor： Yoshikazu Iwata , Makoto Sugiyama , Motohisa Miyauchi
CPC classification number: D01F9/32
Abstract: A carbonizing furnace includes a heating chamber with a wall having channels therein, a carbon heater in the channels, a heat insulator composed of carbon fiber felt and a ceramic fiber felt which covers the heating chamber such that the carbon fiber felt is in contacting with the heating chamber and the ceramic fiber felt is separated by a space from the carbon fiber felt, and a housing enclosing the heating chamber and the heat insulator, and an inlet for filling the insulator with an inert gas. The carbonizing furnace can be run stably and continuously.
Abstract translation: 碳化炉包括具有通道的壁的加热室，通道中的碳加热器，由碳纤维毡组成的绝热体和覆盖加热室的陶瓷纤维毡，使得碳纤维毡与 加热室和陶瓷纤维毡与碳纤维毡隔开一个空间，封闭加热室和绝热器的壳体以及用惰性气体填充绝缘体的入口。 碳化炉可以稳定运行。
-
Patent Agency Ranking
公开(公告)号：US4814145A
公开(公告)日：1989-03-21
申请号：US868655
申请日：1986-05-29
Applicant: Akihiko Yoshida , Atsushi Nishino , Ichiro Tanahashi , Yasuhiro Takeuchi
Inventor： Akihiko Yoshida , Atsushi Nishino , Ichiro Tanahashi , Yasuhiro Takeuchi
CPC classification number: D01F9/32
Abstract: A vertical apparatus for continuously carbonizing and activating various types of fiber materials. The apparatus comprising a chamber having openings at upper and lower portions thereof, at least one port through which an activating gas is passed for activation of the fiber material and a heater for keeping the temperature in the chamber, a means for vertically passing the fiber material in a continuous manner for the carbonization and activation, and a means for supplying the activating gas into the chamber. A method for continuously carbonizing and activating fiber materials in an efficient manner is also described.
Abstract translation: 用于连续碳化和活化各种纤维材料的垂直装置。 该装置包括在其上部和下部具有开口的腔室，活化气体通过的至少一个端口用于纤维材料的活化，以及用于保持室内的温度的加热器，用于使纤维材料垂直通过的装置 以连续方式进行碳化和活化，以及用于将活化气体供应到室中的装置。 还描述了一种以有效的方式连续碳化和活化纤维材料的方法。
-
37.发明授权Membrane separation of uncoverted carbon fiber precursors from flux solvent and/or anti-solvent 失效从助焊剂溶剂和/或反溶剂中分离未转化的碳纤维前体
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
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
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：US4523321A
公开(公告)日：1985-06-11
申请号：US498526
申请日：1983-05-26
Applicant: Yukihiro Murakami , Shigeomi Murakami , Katsunosuke Maeda
Inventor： Yukihiro Murakami , Shigeomi Murakami , Katsunosuke Maeda
Abstract: A vertical carbonizing furnace for use in the production of carbon fibers is provided with a vertically extending conduit of hollow rectangular parallelepiped. The lower end of the conduit is immersed in water thereby making a water seal from environmental air. The conduit is also provided with a gas withdrawal outlet which communicates with the upper portion of the conduit through a gas feeding duct for reuse. The mixture of a vapor evaporated from the water seal and an inert gas is withdrawn from the gas withdrawal outlet and fed to the upper portion of the conduit as gas for sealing thereby preventing fibers and the conduit made of carbon or graphite from being deteriorated by said vapor evaporated from the water seal and providing a gas for sealing the upper end of the conduit.
Abstract translation: 用于生产碳纤维的立式碳化炉具有中空长方体的垂直延伸导管。 将导管的下端浸入水中，从而从环境空气中形成水封。 导管还设置有气体提取出口，其通过供气管道与导管的上部连通以便重新使用。 从水密封件蒸发的蒸气和惰性气体的混合物从气体排出口排出并作为密封气体供给到导管的上部，从而防止纤维和由碳或石墨制成的管道被所述 蒸气从水封中蒸发并提供气体，用于密封导管的上端。
-
公开(公告)号：US4501037A
公开(公告)日：1985-02-26
申请号：US483922
申请日：1983-04-11
Applicant: Khin M. Lay , Stephen E. Palguta , Ramon B. Fernandez , Santiago C. Cabalquinto
Inventor： Khin M. Lay , Stephen E. Palguta , Ramon B. Fernandez , Santiago C. Cabalquinto
CPC classification number: D01F9/32 , Y10T29/49959
Abstract: In a process for continuously pulling a web of tows of carbonizable material under tension through an oxidizing oven, the web is introduced into the oxidizing oven by initially feeding a leader in the form of a web of heat-resistant cloth through the oven and then heating the oven if the oven is not already hot. The trailing edge of the leader which remains outside of the oven is then spliced to the leading edge of the web of carbonizable tows, and the leader is used to pull the web of carbonizable tows into and through the hot oven. Use of the heat-resistant leader greatly minimizes wastage within the web of carbonizable tows. Splicing of the trailing edge of the lead to the leading edge of the web of carbonizable tows is accomplished by taping, stitching and folding the two edges to form loops therein into which elongated rods are inserted. The two edges are then secured within a splice bar, the opposite halves of which define slots for receiving the two edges and the included rods. The splice bar may be removed to uncouple the leading edge of the web of carbonizable tows from the leader after the leading edge has passed through the oxidizing oven.
Abstract translation: 在通过氧化炉在张力下连续牵拉可碳化材料纤维网的方法中，通过首先通过烘箱将具有耐热布的纤维网形式的引导件送入烘箱，然后加热，将幅材引入氧化炉中 烤箱如果烤箱还没有热。 然后将保持在烘箱外部的引导件的后缘接合到可碳化丝束网的前缘，并且引导件用于将可碳化丝束的网拉入并通过热烘箱。 耐热引线的使用极大地最大程度地减少了可碳化丝束网内的浪费。 将引线的后缘与可碳化丝束网的前缘接合是通过胶带，缝合和折叠两个边缘来形成其中插入细长杆的环。 然后将两个边缘固定在拼接条中，其相对的一半限定用于接收两个边缘的槽和所包括的杆。 可以去除接头棒，以在前缘已经通过氧化炉之后从引导件脱离可碳化丝束网的前缘。
-
-
-
-
-
-
-
-
-
Search Results
310
records
(took 0.017 seconds)
