公开(公告)号：US10661479B2

公开(公告)日：2020-05-26

申请号：US15872598

申请日：2018-01-16

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29B9/16 ,  B33Y70/00 ,  B29C64/153 ,  B02C23/10 ,  C08G65/46 ,  B33Y10/00 ,  C08G65/40 ,  C08J3/12 ,  C08J5/04 ,  C08L71/12 ,  B29K71/00

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.

公开(公告)号：US10391735B2

公开(公告)日：2019-08-27

申请号：US15481516

申请日：2017-04-07

Applicant: Hexcel Corporation

Inventor： Elizabeth Olk ,  Olivia Niitsoo

IPC: B32B3/12 ,  B32B5/02 ,  B32B7/12 ,  B32B37/14 ,  B32B1/04 ,  B32B5/14 ,  B32B5/26 ,  B32B29/02 ,  B32B3/26 ,  B29C70/44 ,  B29D24/00 ,  B32B37/12 ,  B32B38/00

Abstract: Light weight fibrous veils are incorporated into the uncured composite face sheets of a honeycomb sandwich structure in order to reduce the lateral crushing of the honeycomb (core crush) that occurs during curing of the uncured structure in an autoclave or vacuum bag system. The light weight fibrous veils act as friction-promoting layers to reduce the relative movement of the uncured face sheets that leads to core crush during the curing process.

公开(公告)号：US20190039745A1

公开(公告)日：2019-02-07

申请号：US15669007

申请日：2017-08-04

Applicant: Hexcel Corporation

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

IPC: B64D33/02 ,  F02C7/045 ,  B64C1/40

CPC classification number: B64D33/02 ,  B64C1/40 ,  B64D2033/0206 ,  E04C2/365 ,  F02C7/045 ,  F02K1/827 ,  F04D29/663 ,  F05D2230/60 ,  F05D2250/283 ,  F05D2260/96 ,  F05D2260/963 ,  G10K11/172

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.

公开(公告)号：US20190024589A1

公开(公告)日：2019-01-24

申请号：US15653686

申请日：2017-07-19

Applicant: Hexcel Corporation

Inventor： Lisa D. Bowen ,  Jessica Miller

IPC: F02C7/24 ,  F02C7/045 ,  G10K11/172 ,  E04B1/84 ,  E04B1/86

Abstract: Acoustic structures in which acoustic septa are located in the cells of a honeycomb for reducing the noise generated from a source The honeycomb used to form the acoustic structure has walls that contain convex and concave contours which make the honeycomb flexible. The acoustic septa are formed by inserting planar acoustic inserts into the honeycomb cells to form a septum cap which is friction-locked within the cell and then permanently bonded in place. The planar acoustic septum is configured to match the unique shape of the cell contours to provide desired friction-locking when inserted into the cells and desired acoustic properties after being permanently bonded in place.

公开(公告)号：US10119001B2

公开(公告)日：2018-11-06

申请号：US15229067

申请日：2016-08-04

Applicant: Hexcel Corporation ,  Hexcel Composites Limited

Inventor： Yen-Seine Wang ,  Chris Mason ,  Martin Simmons

IPC: C08J5/24 ,  C08L77/02 ,  C08G59/50 ,  C08L63/00 ,  C08L81/06 ,  C08G59/32 ,  C08K5/18

Abstract: Uncured epoxy resin for use in making prepreg for aerospace applications. The resin includes an epoxy resin component comprising difunctional epoxy resin, trifunctional epoxy resin and/or tetrafunctional epoxy resin and a sufficient amount of [3-(4-aminobenzoyl) oxyphenyl]4-aminobenzoate (3-ABOAB), as a curing agent, such that the uncured resin can be stored at room temperature of at least 6 weeks and wherein the uncured resin can be fully cured in no more than 2 hours at a temperature of between 175° C. and 185° C.

公开(公告)号：US10112342B2

公开(公告)日：2018-10-30

申请号：US15908119

申请日：2018-02-28

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C64/00 ,  B29C64/393 ,  C08L71/00 ,  B29C64/153 ,  B29C64/386 ,  B29K105/00 ,  B29K71/00 ,  B33Y50/02

Abstract: A method for determining a bed temperature setpoint for use with a powder in a selective laser sintering machine is disclosed. The method includes the step of providing a powder comprising a polymer for use in a selective laser sintering machine. The method further includes the step of determining a ratio of a liquid portion of the powder to a solid portion of the powder as a function of temperature within a temperature range. A bed temperature setpoint is selected in the temperature range corresponding to a desired ratio of the liquid portion of the powder to the solid portion of the powder. A temperature of a bed of a selective laser sintering machine is set to the selected bed temperature setpoint, and a part is built from the powder using the selective laser sintering machine.

公开(公告)号：US10106661B2

公开(公告)日：2018-10-23

申请号：US15622585

申请日：2017-06-14

Applicant: Hexcel Corporation

Inventor： Yan Zhu ,  Gordon Emmerson ,  Yen-Seine Wang ,  Maureen Boyle ,  Jessica Leandro

IPC: B32B27/00 ,  C08J5/24 ,  C08J5/04 ,  B32B27/38

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 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：US10000022B2

公开(公告)日：2018-06-19

申请号：US13705332

申请日：2012-12-05

Applicant: Hexcel Corporation

Inventor： Scott F. DeFelice ,  Anthony DeCarmine

IPC: B29C64/153 ,  B29C67/00 ,  B29C67/04 ,  B33Y10/00 ,  C08G65/40 ,  B33Y70/00 ,  B33Y40/00 ,  B29K71/00 ,  B29K105/26 ,  B29C35/08

CPC classification number: B29C64/153 ,  B29C64/357 ,  B29C67/04 ,  B29C2035/0838 ,  B29K2071/00 ,  B29K2105/26 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C08G65/4012 ,  C08G2650/40

Abstract: A process for manufacturing a three-dimensional object from a powder by selective sintering the powder using electromagnetic radiation. The powder comprises recycled PAEK. In one embodiment, the powder comprises recycled PEKK. In one embodiment, the powder comprises 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 comprising an unused PEKK powder.

公开(公告)号：US20180100044A1

公开(公告)日：2018-04-12

申请号：US15839467

申请日：2017-12-12

Applicant: Hexcel Corporation

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

IPC: C08J5/04 ,  C08L63/04 ,  C08L79/08 ,  C08G59/32

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：US09937667B2

公开(公告)日：2018-04-10

申请号：US14472817

申请日：2014-08-29

Applicant: Hexcel Corporation

Inventor： Scott DeFelice ,  Anthony DeCarmine

IPC: B29C67/00 ,  C08L71/00 ,  B29C64/153 ,  B29C64/386 ,  B29K105/00 ,  B29K71/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/153 ,  B29C64/386 ,  B29K2071/00 ,  B29K2105/251 ,  B33Y50/02 ,  C08G2650/40 ,  C08L71/00

Abstract: A method for determining a bed temperature setpoint for use with a powder in a selective laser sintering machine is disclosed. The method includes the step of providing a powder comprising a polymer for use in a selective laser sintering machine. The method further includes the step of determining a ratio of a liquid portion of the powder to a solid portion of the powder as a function of temperature within a temperature range. A bed temperature setpoint is selected in the temperature range corresponding to a desired ratio of the liquid portion of the powder to the solid portion of the powder. A temperature of a bed of a selective laser sintering machine is set to the selected bed temperature setpoint, and a part is built from the powder using the selective laser sintering machine.