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    System and method for improving thermoset-thermoplastic interface adhesion
    4.
    发明授权
    System and method for improving thermoset-thermoplastic interface adhesion 有权

    公开(公告)号：US11479026B2

    公开(公告)日：2022-10-25

    申请号：US16537484

    申请日：2019-08-09

    Applicant: The Boeing Company

    Inventor： Nishant Kumar Sinha ,  Om Prakash

    IPC: B32B27/12 ,  B64F5/10 ,  B32B5/02

    Abstract: Illustrative examples of forming and using suitably adapted materials for improving interface strength between thermoset-thermoplastic joined parts includes exposure of a thermoplastic substrate to a plasma to form an amine-functionalized substrate having amine chemical moieties disposed on a first surface. The first surface of the thermoplastic substrate is positioned adjacent to and contacts a second surface of a thermoset substrate to form a workpiece. The thermoset substrate includes epoxide chemical moieties on and within material forming the thermoset substrate. The workpiece is subsequently heated to form a structure, where heating of the workpiece causes covalent chemical bonds to form between the plasma-treated first surface of the thermoplastic substrate and the second surface of the thermoset substrate. Thereafter, additional thermoplastic components can be fusion bonded to a surface of the thermoplastic substrate opposite the first surface—thereby providing improved attachment of additional thermoplastic components to the thermoset substrate.

    FABRICATION OF ADDITIVE MANUFACTURING PARTS
    5.
    发明申请
    FABRICATION OF ADDITIVE MANUFACTURING PARTS 有权

    公开(公告)号：US20210206089A1

    公开(公告)日：2021-07-08

    申请号：US16734497

    申请日：2020-01-06

    Applicant: The Boeing Company

    Inventor： Nishant Kumar Sinha

    IPC: B29C64/336 ,  B29C64/209 ,  B29C64/118 ,  B29C64/264 ,  B29C64/188

    Abstract: Additive manufacturing parts having improved functional properties such as conductivity and absorption are fabricated with a fused filament fabrication process to have a contiguous path of functional nanomaterial embedded within the parts. A first heated filament consisting of a primary polymer material is deposited through a first nozzle and a second heated filament including a secondary polymer material filled with functional nanomaterial is deposited through a second nozzle in one or more layers to form a fabricated additive manufacturing part having at least one void. The second heated filament is embedded within the primary polymer material. A section of the fabricated additive manufacturing part where the secondary polymer material is located is selectively melted and an external isostatic pressure is applied to the fabricated additive manufacturing part to diffuse the secondary polymer material into the void and form a contiguous path of functional nanomaterial within the additive manufacturing parts.

    SYSTEM AND METHOD FOR IMPROVING THERMOSET-THERMOPLASTIC INTERFACE ADHESION
    6.
    发明申请
    SYSTEM AND METHOD FOR IMPROVING THERMOSET-THERMOPLASTIC INTERFACE ADHESION 有权

    公开(公告)号：US20210039369A1

    公开(公告)日：2021-02-11

    申请号：US16537484

    申请日：2019-08-09

    Applicant: The Boeing Company

    Inventor： Nishant Kumar Sinha ,  Om Prakash

    IPC: B32B27/12 ,  B32B5/02 ,  B64F5/10

    Abstract: Illustrative examples of forming and using suitably adapted materials for improving interface strength between thermoset-thermoplastic joined parts includes exposure of a thermoplastic substrate to a plasma to form an amine-functionalized substrate having amine chemical moieties disposed on a first surface. The first surface of the thermoplastic substrate is positioned adjacent to and contacts a second surface of a thermoset substrate to form a workpiece. The thermoset substrate includes epoxide chemical moieties on and within material forming the thermoset substrate. The workpiece is subsequently heated to form a structure, where heating of the workpiece causes covalent chemical bonds to form between the plasma-treated first surface of the thermoplastic substrate and the second surface of the thermoset substrate. Thereafter, additional thermoplastic components can be fusion bonded to a surface of the thermoplastic substrate opposite the first surface—thereby providing improved attachment of additional thermoplastic components to the thermoset substrate.

    System and method for improving thermoset-thermoplastic interface adhesion
    9.
    发明授权
    System and method for improving thermoset-thermoplastic interface adhesion 有权

    公开(公告)号：US11633925B2

    公开(公告)日：2023-04-25

    申请号：US16537471

    申请日：2019-08-09

    Applicant: The Boeing Company

    Inventor： Nishant Kumar Sinha ,  Om Prakash

    IPC: B29C65/00 ,  B29K63/00 ,  B29K101/12

    Abstract: Illustrative examples of forming and using suitably adapted materials for improving interface strength between thermoset-thermoplastic joined parts includes exposure of a thermoplastic substrate to a plasma to form an amine-functionalized substrate having amine chemical moieties disposed on a first surface. The first surface of the thermoplastic substrate is positioned adjacent to and contacts a second surface of a thermoset substrate to form a workpiece. The thermoset substrate includes epoxide chemical moieties on and within material forming the thermoset substrate. The workpiece is subsequently heated to form a structure, where heating of the workpiece causes covalent chemical bonds to form between the plasma-treated first surface of the thermoplastic substrate and the second surface of the thermoset substrate. Thereafter, additional thermoplastic components can be fusion bonded to a surface of the thermoplastic substrate opposite the first surface—thereby providing improved attachment of additional thermoplastic components to the thermoset substrate.

    Fabrication of additive manufacturing parts
    10.
    发明授权
    Fabrication of additive manufacturing parts 有权

    公开(公告)号：US11465354B2

    公开(公告)日：2022-10-11

    申请号：US16734497

    申请日：2020-01-06

    Applicant: The Boeing Company

    Inventor： Nishant Kumar Sinha

    IPC: B29C64/336 ,  B29C64/209 ,  B29C64/118 ,  B29C64/188 ,  B29C64/264 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y40/20

    Abstract: Additive manufacturing parts having improved functional properties such as conductivity and absorption are fabricated with a fused filament fabrication process to have a contiguous path of functional nanomaterial embedded within the parts. A first heated filament consisting of a primary polymer material is deposited through a first nozzle and a second heated filament including a secondary polymer material filled with functional nanomaterial is deposited through a second nozzle in one or more layers to form a fabricated additive manufacturing part having at least one void. The second heated filament is embedded within the primary polymer material. A section of the fabricated additive manufacturing part where the secondary polymer material is located is selectively melted and an external isostatic pressure is applied to the fabricated additive manufacturing part to diffuse the secondary polymer material into the void and form a contiguous path of functional nanomaterial within the additive manufacturing parts.

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