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    Carbon Fibers Having Improved Strength And Modulus And An Associated Method And Apparatus For Preparing Same
    21.
    发明申请
    Carbon Fibers Having Improved Strength And Modulus And An Associated Method And Apparatus For Preparing Same 有权
    具有改善强度和模量的碳纤维及其制备方法和装置

    公开(公告)号：US20140220339A1

    公开(公告)日：2014-08-07

    申请号：US14250491

    申请日：2014-04-11

    Applicant: Hexcel Corporation

    Inventor： Carlos A. León y León

    IPC: D01F9/12

    CPC classification number: D01F9/22 ,  C01B31/00 ,  C01B32/00 ,  C01B32/05 ,  D01F9/12 ,  D01F9/225 ,  D01F9/32 ,  D02J1/228 ,  D02J13/00 ,  D10B2101/12 ,  D10B2505/02 ,  F27B9/28 ,  Y10T428/2918

    Abstract: The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.

    Abstract translation: 本发明涉及具有高拉伸强度和弹性模量的碳纤维。 本发明还提供了一种制造碳纤维的方法和装置。 该方法包括使前体纤维前进通过氧化炉，其中纤维在氧化气氛中进行受控拉伸，其中拉伸载荷分布在通过氧化炉的多次通过中，这允许实现更高的累积延伸。 该方法还包括使纤维经受两次或更多次通过中的受控拉伸，其足以使纤维在两次或更多次通过中的每一次中经历一个或多个转变。 本发明还涉及一种氧化炉，其具有多个能够彼此独立驱动的协作驱动辊，使得可以独立地控制在多个通道中的每一个中施加到烘箱的拉伸量。

    CARBOXYLATE SALTS OF AMINE COMPOUNDS AS CURING AGENTS
    23.
    发明公开
    CARBOXYLATE SALTS OF AMINE COMPOUNDS AS CURING AGENTS 审中-公开

    公开(公告)号：US20240150958A1

    公开(公告)日：2024-05-09

    申请号：US18334081

    申请日：2023-06-13

    Applicant: Hexcel Corporation

    Inventor： Michael Yurchenko ,  Brooks Lively ,  Dale Schmidt ,  Winston Clark Herren

    IPC: D06M15/55

    CPC classification number: D06M15/55 ,  D06M2200/40 ,  D10B2101/12

    Abstract: Provided are sizing compositions, and more particularly, sizing compositions comprising an epoxy and a carboxylate salt of an amine compound for the treatment of carbon fiber. The structure of the amine used to make the carboxylate salts is RnXmQ, wherein Q is an amine-containing group, X is a polyether group, and R is an aryl or alkyl group, either linear or branched, saturated or unsaturated, or a combination thereof. m and n are integers greater than or equal to 0. The compositions reduce or eliminate sheen and luster on carbon fibers in finished goods. Carbon fiber-reinforced composite materials and carbon fibers incorporating said sizing compositions are also provided.

    FINISH COMPOSITION
    27.
    发明申请
    FINISH COMPOSITION 审中-公开

    公开(公告)号：US20190382950A1

    公开(公告)日：2019-12-19

    申请号：US16407365

    申请日：2019-05-09

    Applicant: Hexcel Corporation

    Inventor： Michael E. Yurchenko

    IPC: D06M15/643 ,  D06M13/192 ,  D06M13/207 ,  D06M13/188 ,  D06M13/342 ,  D06M13/355 ,  D06M13/402 ,  D06M13/203 ,  D06M13/17 ,  D01F9/22

    Abstract: Provided is a composition for the treatment of fibers, such as PAN precursor fibers. The finish composition includes a polysiloxane; an emulsifier; water; and a dicarboxylic acid having a pKa from 1 to 4, and boiling point from 200 to 400° C. The dicarboxylic acid may have the following formula: where R1 is absent or a saturated or unsaturated, linear or branched, aromatic substituted or unsubstituted, hydrocarbon group; Y1 and Y2 are independently hydrogen, nitrogen, oxygen, sulfur, phosphorus, C1-C6 alkyl group, or an alkoxy group; and X1 and X2 are independently one or more hydrogen atoms, a metal, a quaternary amine, or a hydrocarbon group having up to 6 carbon atoms, the hydrocarbon group being an alkyl group, an alkylene group, or an aromatic group, which may be branched or linear, and may optionally have one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus.

    MATRIX RESINS TOUGHENED WITH HYBRID POLYAMIDE PARTICLES
    28.
    发明申请
    MATRIX RESINS TOUGHENED WITH HYBRID POLYAMIDE PARTICLES 审中-公开

    公开(公告)号：US20190322825A1

    公开(公告)日：2019-10-24

    申请号：US16502277

    申请日：2019-07-03

    Applicant: Hexcel Corporation

    Inventor： Yen-Seine WANG

    IPC: C08J5/24 ,  C08J5/04

    Abstract: Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts. The prepreg includes carbon reinforcing fibers and an uncured resin matrix. The resin matrix includes an epoxy component, polyethersulfone as a toughening agent, and a curing agent. The resin matrix is also composed of a thermoplastic particle component that includes hybrid polyamide particles wherein each hybrid particle contains a mixture of amorphous and semi-crystalline polyamide.

    Polymer Powder and Method of Preparing the Same
    30.
    发明申请
    Polymer Powder and Method of Preparing the Same 审中-公开

    公开(公告)号：US20180201783A1

    公开(公告)日：2018-07-19

    申请号：US15872598

    申请日：2018-01-16

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: C08L71/12 ,  B29C64/153 ,  C08J3/12 ,  C08G65/40 ,  C08J5/04

    Abstract: A powder composition suitable for use in laser sintering for printing a three-dimensional object. The powder composition includes a polyaryletherketone (PAEK) powder having a plurality of particles. The plurality of particles having a mean diameter of D50. The composition includes a plurality of carbon fibers having a mean length L50. L50 is greater than D50. The particles are substantially non-spherical. A portion of the carbon fiber is embedded into the particle via high intensity mixing.

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