公开(公告)号：US10894868B2

公开(公告)日：2021-01-19

申请号：US15850790

申请日：2017-12-21

Applicant: Hexcel Corporation

Inventor： Michael E. Yurchenko

IPC: C08J5/04 ,  C08J5/06 ,  C25D9/02 ,  D01F11/14 ,  D01F11/16 ,  D06M10/10 ,  D06M14/36 ,  D06M15/53 ,  D06M15/59 ,  D06M15/61 ,  D06M15/63 ,  D06M15/693 ,  D06M101/40

Abstract: Provided is composite carbon fibers in which polymers having an amino containing group are covalently bonded to the surface of the carbon fiber. Aspects are also directed to processes for preparing the composite carbon fibers. Additional aspects are directed to reinforced composites comprising a resin matrix and the composite carbon fibers, and to processes of making such reinforced composites.

公开(公告)号：US20200376750A1

公开(公告)日：2020-12-03

申请号：US16604934

申请日：2018-04-25

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/153 ,  B29C64/393 ,  B29C64/268 ,  B29C64/295 ,  B33Y30/00 ,  B33Y50/02

Abstract: A system for producing an object from a powder by selective laser sintering. The system includes a chamber and a support platform in the chamber. A spreader applies a layer of powder to a bed surface. An irradiation source irradiates select points in the powdered layer prepared on the support platform. A radiant heater heats at least a portion of the bed surface. A temperature sensor monitors the temperature of select points on the bed surface. A controller adjusts the radiant heater in response to temperature data provided by the temperature sensor.

公开(公告)号：US10787997B1

公开(公告)日：2020-09-29

申请号：US16592589

申请日：2019-10-03

Applicant: HEXCEL CORPORATION

Inventor： Kathlyn Lizette Baron ,  Gordon Emmerson ,  Yen-Seine Wang

IPC: F02K9/34 ,  B29C70/50 ,  B29B15/12 ,  C08L63/04 ,  C08L77/06 ,  C08L79/08

Abstract: A semipreg that can be cured/molded to form aerospace composite parts including rocket booster casings. The semipreg includes a fibrous layer and a resin layer located on one side of the fibrous layer. The resin layer includes an epoxy component that is a combination of a hydrocarbon epoxy novolac resin and a trifunctional epoxy resin and optionally a tetrafunctional epoxy resin. The resin matrix includes polyethersulfone as a toughening agent and a thermoplastic particle component.

公开(公告)号：US10766197B2

公开(公告)日：2020-09-08

申请号：US15470328

申请日：2017-03-27

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/393 ,  B33Y30/00 ,  B29C64/153 ,  B33Y50/00 ,  B29C35/02 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y70/00 ,  B29K71/00

Abstract: A method of producing an object from a polymer powder using a laser sintering system, whereby the laser sintering system introduces heat energy to solidify select points of a layer of polymer powder according to build data of the object and adjusts the heat energy according to solidification of select points of other layers.

公开(公告)号：US20200255254A1

公开(公告)日：2020-08-13

申请号：US16756074

申请日：2018-10-18

Applicant: HEXCEL COMPOSITES LIMITED ,  HEXCEL CORPORATION

Inventor： John ELLIS ,  Anthony LOCCISANO

IPC: B65H49/26 ,  B65H57/18

Abstract: There is provide a process for unwinding material from a spool (2) wherein the angle (Θ) of take off at the first contact point (4) for the unwind is always in the range 0±20°, and wherein the first contact point (4) for the unwind is no more than 600 mm from the axis (3) of rotation of the spool (2). There is also provided an apparatus for the unwinding of material from a spool (2) comprising an axis (3) upon which a spool (2) may be rotatably mounted and a static first contact point (4) for the unwound material positioned no more than 600 mm from the centre of the axis (3), wherein the angle (Θ) of take off at the first contact point (4) for the unwind is always in the range 0±20°.

公开(公告)号：US20200147871A1

公开(公告)日：2020-05-14

申请号：US16727474

申请日：2019-12-26

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/153 ,  B33Y10/00 ,  C08G65/40 ,  B29C67/04 ,  B29C64/357

Abstract: A process for manufacturing a three-dimensional object from a powder by selective sintering the powder using electromagnetic radiation. The powder includes recycled PAEK. In one embodiment, the powder includes recycled PEKK. In one embodiment, the powder includes first recycle PEKK and second recycle PEKK. In one embodiment, the powder consists essentially of recycled PEKK. The process may include the step of maintaining a bed of a selective laser sintering machine at approximately 300 degrees Celsius and applying a layer of the powder to the bed. The average in-plane tensile strength of the three-dimensional object is greater than that of a three-dimension object manufactured by selective sintering using a powder including an unused PEKK powder.

公开(公告)号：US10604870B2

公开(公告)日：2020-03-31

申请号：US15994849

申请日：2018-05-31

Applicant: Hexcel Corporation

Inventor： Adam Dust ,  Robert Loesch ,  Harini Dasarathy ,  Rebecca Forsgren

IPC: D02J1/18 ,  D01F8/18 ,  D02J1/08

Abstract: The filament count of a carbon fiber tow is increased by spreading and commingling the carbon filaments of a first tow with the carbon filaments of a second tow. The carbon filaments of the first and second tows are spread apart using a gas stream. The spread tows are aligned with each other and brought into contact as they pass over a grating in the presence of the same or a different gas stream to form an entangled tow. The entangled tow is then formed into a combined tow. The modulus and denier of the carbon filaments in the first and second tows may be the same or they can be varied to provide combined tows with a wide range of filament counts and filament combinations.

公开(公告)号：US10603891B2

公开(公告)日：2020-03-31

申请号：US15499425

申请日：2017-04-27

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C04B35/524 ,  C04B35/83 ,  B29C64/153 ,  C04B35/634 ,  C25D5/50 ,  C23C18/36 ,  C25D5/12 ,  C23C18/34 ,  C23C18/16 ,  B28B11/24 ,  C23C18/32 ,  B29K71/00 ,  B29K105/06 ,  B29K307/04

Abstract: Method for producing an object by additively manufacturing a preform of the object from a building material comprising a polymer. The preform is encapsulated with a metal or metal alloy encapsulant that is capable of withstanding temperatures greater than the preform. The encapsulated preform is heated at a predetermined temperature and for a period of time, such that the preform at least partially transmutes into the form of a carbonaceous solid.

公开(公告)号：US10577472B2

公开(公告)日：2020-03-03

申请号：US16158151

申请日：2018-10-11

Applicant: Hexcel Corporation

Inventor： Yen-Seine Wang ,  Gordon Emmerson

IPC: C08J5/24 ,  B32B27/38 ,  C08G59/32 ,  C08G59/38 ,  C08G59/50 ,  C08J5/04 ,  C08L81/06 ,  B32B27/08 ,  B64D29/00

Abstract: Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts that are designed to tolerate hot and wet conditions. The prepreg includes fibers and an uncured resin. The uncured resin includes an epoxy component that is a combination of a trifunctional epoxy resin, a tetra functional epoxy resin and a solid epoxy resin. The resin includes polyethersulfone and a thermoplastic particle component. The uncured resin also includes a curing agent.

公开(公告)号：US10577117B2

公开(公告)日：2020-03-03

申请号：US15669007

申请日：2017-08-04

Applicant: Hexcel Corporation

Inventor： Merid Haile ,  Andres Baca ,  Lisa D. Bowen ,  Whitney Dailey

IPC: B64D33/04 ,  F02C7/045 ,  G10K11/172 ,  B64D33/02 ,  F02K1/82 ,  B64C1/40 ,  G10K11/16 ,  E04C2/36 ,  F04D29/66

Abstract: Acoustic structures in which acoustic septa are located in the angled cells of a honeycomb for reducing the noise generated from a source. The honeycomb used to form the acoustic structure has cell walls that extend at an angle relative to the honeycomb edges such that the depth of the honeycomb cells is greater than the honeycomb core thickness The acoustic septa are formed by inserting planar acoustic inserts into the angled honeycomb cells to form septum caps which are friction-locked within the angled cells and then permanently bonded in place.