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    Surface finishing moulding material comprising a rheology-modified epoxy layer
    102.
    发明授权
    Surface finishing moulding material comprising a rheology-modified epoxy layer 有权

    公开(公告)号：US12240954B2

    公开(公告)日：2025-03-04

    申请号：US17770567

    申请日：2020-09-23

    Applicant: HEXCEL COMPOSITES LIMITED

    Inventor： Mark Whiter

    IPC: C08J5/24 ,  B29C70/18 ,  B32B5/02 ,  B32B27/20 ,  B32B27/38 ,  B29K63/00 ,  B29K309/08

    Abstract: A moulding material which comprises: (a) a structural reinforcement layer comprising a fibrous reinforcement material optionally in combination with a second resin composition; and (b) a surface enhancing layer, for contacting a surface of a mould or tool, comprising a first non-woven fibre carrier in combination with a first resin composition containing a rheology modifier and a curing agent, wherein the first resin composition provides an external mould or tool-contacting surface of the moulding material. The moulding material can be cured to form a moulded article having a high quality surface finish that requires minimal preparation before painting and/or application in its intended use. The moulded article may be provided with sacrificial discontinuous indicator means to assist in uniform removal of a part of the surface enhancing layer of the moulded article for specific applications.

    EPOXY RESIN COMPOSITIONS
    103.
    发明公开
    EPOXY RESIN COMPOSITIONS 审中-公开

    公开(公告)号：US20240158627A1

    公开(公告)日：2024-05-16

    申请号：US17768263

    申请日：2020-09-22

    Applicant: HEXCEL COMPOSITES LIMITED

    Inventor： Martin Richard SIMMONS ,  Scott THOMPSON ,  Stephen MORTIMER

    IPC: C08L63/00 ,  C08G59/50 ,  C08L87/00

    CPC classification number: C08L63/00 ,  C08G59/504 ,  C08L87/00 ,  C08L2205/035

    Abstract: There is provided a resin composition for producing a composite part, comprising: a) from 30 to 90 wt % by weight of the composition of an epoxy resin component; and b) from 5 to 50 wt % by weight of the composition of a curative component; wherein the epoxy resin component comprises N,N,N′,N′-tetraglycidyl-4,4′-diamino-3,3′-dimethyldiphenylmethane (M-TGDDM) in an amount of at least 30 wt % by weight of the epoxy resin component; and further wherein the curative component comprises one or more of a diaminodiphenyl sulfone, a diaminobenzophenone, a fluorene diamine, a methylene bis aniline, including hybrid methylene bis anilines, or a substituted diamine toluene. There is also provided the use of N,N,N′,N′-tetraglycidyl-4,4′-diamino-3,3′-dimethyldiphenylmethane (M-TGDDM) as a compression performance improving additive in a resin composition for producing a composite part. There are also provided curable composite components, cured composite components produced therefrom and the use of such components as aircraft components.

    PEEL PLY FOR ELONGATE COMPOSITE MATERIALS
    105.
    发明申请
    PEEL PLY FOR ELONGATE COMPOSITE MATERIALS 有权

    公开(公告)号：US20220212424A1

    公开(公告)日：2022-07-07

    申请号：US17602095

    申请日：2020-04-02

    Applicant: Hexcel Composites Limited ,  Hexcel Holding GMBH ,  Hexcel Corporation

    Inventor： Johannes MOSER ,  Yu-Chen HUNG ,  Erin REAGAN

    IPC: B29C70/52 ,  B29C70/54 ,  B29C70/68

    Abstract: An assembly (113) for composite manufacture is provided. The assembly comprises a cured resin impregnated reinforcement material (112) comprising a fibre component and a resin matrix component, in which the resin matrix component comprises polyurethane, the assembly having a length to width ratio of at least 5:1, and the assembly defining a longitudinal direction (L) along its length; and a peel ply (116) in contact with the cured resin impregnated reinforcement material (112), the peel ply (116) comprising a woven layer having a plurality of longitudinal fibres (118) extending in the longitudinal direction (L); and a plurality of transverse fibres (120) extending in a transverse direction (T) normal to the longitudinal direction (L); in which the areal density of the plurality of transverse fibres (120) is higher than the areal density of the plurality of longitudinal fibres (118).

    EPOXY RESIN FORMULATIONS
    107.
    发明申请
    EPOXY RESIN FORMULATIONS 有权

    公开(公告)号：US20210214550A1

    公开(公告)日：2021-07-15

    申请号：US15734008

    申请日：2019-06-13

    Applicant: HEXCEL COMPOSITES LIMITED

    Inventor： Dana BLAIR

    IPC: C08L63/04 ,  C08G59/30 ,  C08G59/24 ,  C08G59/40 ,  C08K3/02 ,  C08K3/22 ,  C08K3/32 ,  C08K5/3492 ,  C08K5/52 ,  C08J5/04 ,  C08J5/24

    Abstract: Formulations comprising from 10 to 80% by weight of the formulation of a halogenated epoxy resin; from 1 to 15% by weight of the formulation of an antimony based fire retardant; from 1 to 10% by weight of the formulation of an inorganic or non-polymeric organic phosphorous containing fire retardant; and from 1 to 30% by weight of the formulation of a curative system are provided. The formulations are particularly suitable for producing aircraft interior composite components having good fire retarding properties, low smoke emission, low smoke toxicity and low heat release properties. The formulations also have excellent processing and mechanical properties. Further components may be included in the compositions to improve various properties, including the fire retarding, low smoke emission, low smoke toxicity and low heat release properties and to also further improve the processing and mechanical properties, including toughness. Compositions produced from the formulations have excellent processing and mechanical properties, and may also have good surface finishes.

    UNWINDING OF MATERIALS
    108.
    发明申请
    UNWINDING OF MATERIALS 审中-公开

    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°.

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