Process for producing chopped strand of carbon fiber
    3.
    发明授权
    Process for producing chopped strand of carbon fiber 失效
    生产短纤维碳纤维的方法

    公开(公告)号:US5030435A

    公开(公告)日:1991-07-09

    申请号:US494952

    申请日:1990-03-15

    CPC分类号: D01F9/155 D01F9/15

    摘要: The present invention relates to a process for producing a carbon fiber chopped strand which comprises preparing a pitch fiber from petroleum pitch or coal pitch, cutting the pitch fiber to a predetermined desired length, heating the cut pitch fiber at a high density accumulation in the atmosphere of an oxidative gas to infusibilize the cut pitch fiber, and then carbonizing and graphitizing the infusibilized fiber in an inert atmosphere. According to the process of the invention, no fuzz are formed on the fiber and no uneven infusibilization takes place. Further, the pitch fiber chopped strand accumulation has a high bulk density and relieve exothermic excursion naturally, and therefore neither combustion nor sticking takes place even in an oxidative atmosphere. Accordingly, the production speed can be enhanced and the cost can be lowered to a great extent.

    摘要翻译: 碳纤维短切纤维的制造方法技术领域本发明涉及一种碳纤维短切纤维的制造方法,其特征在于,由石油沥青或煤沥青制备沥青纤维,将沥青纤维切割成预定的长度,在大气中以高密度积聚加热切断纤维 的氧化气体以使切割的沥青纤维发生渗透,然后在惰性气氛中对不熔化的纤维进行碳化和石墨化。 根据本发明的方法,在纤维上不形成绒毛,并且不发生不均匀的渗透。 此外,沥青纤维短切原料堆积具有高的堆积密度并且自然地减轻放热偏移,因此即使在氧化气氛中也不会发生燃烧或粘附。 因此,可以提高生产速度并且可以在很大程度上降低成本。

    Method for infusibilizing pitch fibers
    4.
    发明授权
    Method for infusibilizing pitch fibers 失效
    沥青纤维不熔化的方法

    公开(公告)号:US4988492A

    公开(公告)日:1991-01-29

    申请号:US497774

    申请日:1990-03-21

    CPC分类号: C10C3/14 D01F9/15 D01F9/322

    摘要: This invention provides a method for infusibilization of pitch fibers for production of carbon fibers which comprises putting pitch fibers prepared by melt spinning from a spinning pitch in containers, introducing in succession the containers containing the pitch fibers into an infusibilizing furnace divided into a plurality of sections and passing the containers therethrough from inlet to outlet wherein the containers containing the pitch fibers are intermittently moved through the infusiblizing furnace to retain each of the containers in respective sections for a given period of time, during which temperature of respective sections is independently raised from minimum controlled temperature to maximum controlled temperature and thereafter is lowered to the minimum controlled temperature and then the container is moved.

    摘要翻译: 本发明提供了用于生产碳纤维的沥青纤维不熔化的方法,其包括将通过熔融纺丝制备的沥青纤维从纺丝沥青混合在容器中,将含有沥青纤维的容器连续引入分为多个部分的熔化炉 并且使容器从入口到出口通过,其中容纳沥青纤维的容器被间歇地移动通过熔化炉,以将每个容器保持在相应的部分中一段给定的时间段,在此期间各部分的温度独立地从最小 控制温度到最大控制温度,然后降低到最低控制温度,然后移动容器。

    Method of manufacturing glass fiber strand
    6.
    发明授权
    Method of manufacturing glass fiber strand 失效
    制造玻璃纤维线的方法

    公开(公告)号:US4759784A

    公开(公告)日:1988-07-26

    申请号:US943821

    申请日:1986-12-29

    摘要: A flat glass fiber strand comprises a multiplicity of glass filaments having a non-circular cross-sectional shape with the ratio between its maximum and minimum dimensions being between 1.2:1 and 3:1, and which are gathered in such a manner that one dimension of the cross-section of each extends in parallel with the same dimension of the other filaments. This flat glass fiber strand is manufactured by discharging molten glass under high pressure from a multiplicity of nozzles which are shaped in the form of bores having non-circular cross-sectional shape with the ratio between its maximum and minimum dimensions being between 1.5:1 and 6:1 so as to form a multiplicity of filaments of non-circular cross-sectional shape which are then gathered and wound.

    摘要翻译: 扁平玻璃纤维束包括多个具有非圆形横截面形状的玻璃丝,其最大和最小尺寸之间的比率在1.2:1至3:1之间,并且以这样的方式聚集, 的横截面与其它长丝的相同尺寸平行延伸。 该扁平玻璃纤维股线是通过从多个喷嘴中排出熔融玻璃而制成的,所述多个喷嘴成形为具有非圆形横截面形状的孔的形状,其最大和最小尺寸之间的比率在1.5:1和 6:1,以形成多个非圆形横截面形状的细丝,然后将其聚集和缠绕。

    Bushing for apparatus for spinning glass fibers
    7.
    发明授权
    Bushing for apparatus for spinning glass fibers 失效
    玻璃纤维纺丝装置衬套

    公开(公告)号:US4178162A

    公开(公告)日:1979-12-11

    申请号:US963145

    申请日:1978-11-22

    IPC分类号: C03B37/083 C03B37/02

    CPC分类号: C03B37/083 Y02P40/57

    摘要: Disclosed is a bushing for spinning glass fibers having at its bottom an orifice plate provided with a great number of extremely densely disposed plain holes constituting orifices. In order to stiffen the orifice plate, beam members are provided in the bushing to extend substantially in parallel with and spaced from the orifice plate. Each beam member is fixed at its both ends to confronting walls of the bushing, and is connected to the orifice plate by means of rod members having a small diameter.

    摘要翻译: 公开了一种用于纺丝玻璃纤维的衬套,在其底部具有设置有大量非常密集布置的构成孔的平孔的孔板。 为了加强孔板,梁构件设置在衬套中,以与孔板基本上平行并与孔板间隔开。 每个梁构件的两端固定在衬套的相对的壁上,并且通过具有小直径的杆构件连接到孔板。

    Air nozzle apparatus for use in drawing glass fibers
    8.
    发明授权
    Air nozzle apparatus for use in drawing glass fibers 失效
    用于拉制玻璃纤维的空气喷嘴装置

    公开(公告)号:US4391619A

    公开(公告)日:1983-07-05

    申请号:US421908

    申请日:1982-09-23

    IPC分类号: C03B37/02 C03B37/025

    CPC分类号: C03B37/0213

    摘要: An air nozzle apparatus for directing air flow against the undersurface of an orifice plate of a glass fiber drawing forehearth, having an air introducing section having a manifold formed with at least one air supply port, and an air nozzle section formed with a plurality of nozzle channels communicating with the manifold. The air nozzle section has a plurality of nozzle ribs of substantially the same shape each having opposed side surfaces and opposed end edge portions. The plurality of nozzle ribs are arranged to have their side surfaces located in adjacent relationship to provide a nozzle block. Each nozzle rib is formed on at least one of the opposed side surfaces with a longitudinally extending recess which defines one of the plurality of nozzle channels between the adjacent nozzle ribs.

    摘要翻译: 一种空气喷嘴装置,用于将空气流动引导到玻璃纤维拉伸前炉的孔板的下表面,该空气喷嘴装置具有形成有至少一个供气口的歧管的空气引入部分和形成有多个喷嘴的空气喷嘴部分 通道与歧管连通。 空气喷嘴部分具有大致相同形状的多个喷嘴肋,每个具有相对的侧表面和相对的端部边缘部分。 多个喷嘴肋被布置成使其侧表面位于相邻的关系中以提供喷嘴块。 每个喷嘴肋形成在至少一个相对的侧表面上,具有纵向延伸的凹部,其限定相邻喷嘴肋之间的多个喷嘴通道中的一个。

    Molten glass separating device in glass fiber forming apparatus
    9.
    发明授权
    Molten glass separating device in glass fiber forming apparatus 失效
    玻璃纤维成型设备中熔融玻璃分离装置

    公开(公告)号:US4171212A

    公开(公告)日:1979-10-16

    申请号:US932284

    申请日:1978-08-09

    摘要: In a glass fiber forming apparatus comprising an orifice plate which has a large number of closely spaced orifices and has a flat undersurface and air is blown upwardly against said orifice plate during spinning operation, means is provided for mechanically separating into individual glass fibers a mass of molten glass adhering to the undersurface of the orifice plate in flooding condition before spinning is started or after all glass fibers are broken. The separating means is a clamping means so constructed and arranged as to clamp a mass of molten glass, means for moving said clamping means between a waiting position at which said clamping means will not interfere with the stream of filaments in the normal spinning operation and an operative position at which said clamping means can clamp a mass of molten glass, and means for causing said clamping means to open or close.

    摘要翻译: 在一种玻璃纤维成型设备中,包括具有大量紧密间隔的孔口的孔板,并具有平坦的下表面,并且在纺丝操作期间空气向上吹向所述孔板,用于机械地分离成单个玻璃纤维, 在开始旋转之前或在所有玻璃纤维断裂之后,在溢流状态下粘附在孔板的下表面的熔融玻璃。 分离装置是一种夹持装置,其被构造和布置成夹持一块熔融玻璃,用于在所述夹紧装置在正常纺丝操作期间所述夹紧装置不会干扰长丝流的等待位置移动所述夹紧装置的装置和 所述夹紧装置可夹持一块熔融玻璃的操作位置,以及用于使所述夹紧装置打开或关闭的装置。

    Orifice plate for use in glass-fiber spinning hearth
    10.
    发明授权
    Orifice plate for use in glass-fiber spinning hearth 失效
    用于玻璃纤维纺织炉床的孔板

    公开(公告)号:US4121918A

    公开(公告)日:1978-10-24

    申请号:US814436

    申请日:1977-07-11

    CPC分类号: C03B37/083 Y02P40/57

    摘要: Disclosed is an orifice plate for use in glass-fiber spinning having a number of densely arranged orifices. Each orifice has a larger diameter at the inlet side thereof facing the molten glass and a smaller diameter at the outlet side thereof facing the ambient air. The ratio of the larger diameter to the smaller diameter is so selected to fall within a range between 1 : 0.4 and 1 : 0.9. The reduced diameter of the orifices at their outlet side provides sufficiently large space between adjacent orifices at their outlet sides, in spite of the high density at which the orifices are arranged, so that the joining of glass cones suspended from respective orifices is conveniently avoided even after the brims of the orifices are ground by the viscous cooled molten glass.

    摘要翻译: 公开了一种用于玻璃纤维纺丝的孔板,其具有多个密集布置的孔口。 每个孔口在其面向熔融玻璃的入口侧具有较大的直径,并且其出口侧的面向环境空气的较小直径。 较大直径与较小直径的比例被选择在1:0.4和1:0.9之间的范围内。 孔口出口侧的直径减小在出口侧的相邻孔口之间提供了足够大的空间,尽管排气孔的密度很高,从而甚至可以方便地避免从各孔口悬挂的玻璃杯的接合 在孔的边缘被粘性冷却的熔融玻璃研磨之后。