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公开(公告)号：US10926432B2
公开(公告)日：2021-02-23
申请号：US15872478
申请日：2018-01-16
Applicant: Hexcel Corporation
Inventor： Scott DeFelice , Anthony DeCarmine
IPC: C08G65/46 , B29B9/16 , B33Y70/00 , B29C64/153 , B02C23/10 , B33Y10/00 , C08G65/40 , C08J3/12 , C08J5/04 , C08L71/12 , B29K71/00
Abstract: A method for preparing a PEKK powder for use in SLS includes the steps of: providing a raw, non-powder PEKK material; heat treating the raw PEKK to evaporate at least substantially all of a liquid solvent in the raw PEKK, causing at least substantially all of the raw PEKK to be in the form of irregularly-shaped particles; cooling the raw PEKK; and grinding the raw PEKK to form a PEKK powder.
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公开(公告)号：US20200165417A1
公开(公告)日：2020-05-28
申请号：US16778721
申请日：2020-01-31
Applicant: Hexcel Corporation
Inventor： Whitney Kline , Lawrence Varholak
Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction including a plurality of polyaryletherketone (PAEK) particles having a mean diameter less than 30 microns, a second fraction having a plurality of polyaryletherketone (PAEK) particles having a mean diameter greater than 30 microns, and a third fraction having a plurality of carbon fibers. The first fraction and the second fraction are formed by an air classification separation performed on a pulverized powder. After the separation, the first fraction, the second fraction, and the third fraction are blended in a high intensity mixer. The powder composition when used in selective laser sinter results in parts with increased tensile strength and reduced surface roughness, among other improvements, as compared to similar powders omitting the first fraction. The PAEK may include polyetherketoneketone (PEKK).
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公开(公告)号：US10604277B2
公开(公告)日：2020-03-31
申请号：US15583059
申请日：2017-05-01
Applicant: Hexcel Corporation
Inventor： Andres Baca , Clark Smith , Earl Ayle , Heather Botello
Abstract: An acoustic honeycomb panel is plugged with an acoustic honeycomb plug. The acoustic honeycomb plug is adhesively bonded in the panel using a honeycomb seam. The honeycomb seam is composed of a honeycomb support that is located within the seam channel and an adhesive. Using honeycomb seams to adhesively bond acoustic honeycomb plugs into acoustic honeycomb panels is useful in repairing damaged areas of acoustic honeycomb panels that are located in the acoustic treatments for jet engines.
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公开(公告)号：US10508810B2
公开(公告)日：2019-12-17
申请号：US15708558
申请日：2017-09-19
Applicant: Hexcel Corporation
Inventor： Merid Haile , Earl Ayle , Whitney Dailey
Abstract: A thermal panel having a high temperature side located nearest a source of heat and a low temperature side. The thermal panel includes a corrugated composite material core having hot side ridges and cold side ridges. A hot side skin is attached to the hot side ridges to form a plurality of first cells. A cold side skin is attached to the cold side ridges to form a plurality of second cells. The first cells and second cells are substantially filled with an insulating material that has a thermal conductivity which is lower than the thermal conductivity of the composite material.
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公开(公告)号：US10472479B2
公开(公告)日：2019-11-12
申请号：US15886008
申请日：2018-02-01
Applicant: Hexcel Corporation
Inventor： Yen-Seine Wang , Gordon Emmerson
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 tetrafunctional epoxy resin and a solid epoxy resin. The resin further includes polyethersulfone as a toughening agent and a curing agent.
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Patent Agency Ranking
76.发明申请公开(公告)号：US20190233602A1
公开(公告)日：2019-08-01
申请号：US16158151
申请日：2018-10-11
Applicant: Hexcel Corporation
Inventor： Yen-Seine Wang , Gordon Emmerson
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.
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公开(公告)号：US20190233601A1
公开(公告)日：2019-08-01
申请号：US15886008
申请日：2018-02-01
Applicant: Hexcel Corporation
Inventor： Yen-Seine Wang , Gordon Emmerson
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 tetrafunctional epoxy resin and a solid epoxy resin. The resin further includes polyethersulfone as a toughening agent and a curing agent.
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公开(公告)号：US20190086082A1
公开(公告)日：2019-03-21
申请号：US15708558
申请日：2017-09-19
Applicant: Hexcel Corporation
Inventor： Merid Haile , Earl Ayle , Whitney Dailey
Abstract: A thermal paid having a high temperature side located nearest a source of heat and a low temperature side. The thermal panel includes a corrugated composite material core having hot side ridges and cold side ridges. A hot side skin is attached to the hot side ridges to form a plurality of first cells. A cold side skin is attached to the cold side ridges to form a plurality of second cells. The first cells and second cells are substantially filled with an insulating material that has a thermal conductivity which is lower than the thermal conductivity of the composite material.
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公开(公告)号：US20180312278A1
公开(公告)日：2018-11-01
申请号：US15583059
申请日：2017-05-01
Applicant: Hexcel Corporation
Inventor： Andres Baca , Clark Smith , Earl Ayle , Heather Botello
CPC classification number: G10K11/172 , B29C73/06 , B29C2073/264
Abstract: An acoustic honeycomb panel is plugged with an acoustic honeycomb plug. The acoustic honeycomb plug is adhesively bonded in the panel using a honeycomb seam. The honeycomb seam is composed of a honeycomb support that is located within the seam channel and an adhesive. Using honeycomb seams to adhesively bond acoustic honeycomb plugs into acoustic honeycomb panels is useful in repairing damaged areas of acoustic honeycomb panels that are located in the acoustic treatments for jet engines.
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80.发明授权公开(公告)号：US09938643B2
公开(公告)日：2018-04-10
申请号：US15587627
申请日：2017-05-05
Applicant: Hexcel Corporation
Inventor： Carlos A. León y León
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.
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