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    Material Tensioning System
    1.
    发明申请
    Material Tensioning System 审中-公开

    公开(公告)号：US20170080651A1

    公开(公告)日：2017-03-23

    申请号：US14861197

    申请日：2015-09-22

    Applicant: The Boeing Company

    Inventor： Mike P. Matlack ,  Stephen J. Morgan ,  Thomas K. Tsotsis ,  James R. Fox ,  Randall D. Wilkerson

    IPC: B29C70/54 ,  B29C70/40 ,  B29C70/56 ,  B29C70/06

    CPC classification number: B29C70/56 ,  B29C33/22 ,  B29C70/46 ,  B29K2101/12 ,  B29K2105/12

    Abstract: A system and method for forming an item from a material, which may include elongated fibers and/or stretched broken fibers. The material is placed on a first clamping portion, which is placed on a fixture. A second clamping portion is placed against the material and the first clamping portion and secured together, forming a clamping assembly. The clamping assembly is removed from the fixture and placed on a first die portion, having a first profile. A second die portion is also provided, having a second profile. In forming the item, at least one of the first die portion and the second die portion are moved toward each other such that a second surface of the first die portion and a first surface of the second die portion contact and form the material into the item generally replicating the first profile and the second profile.

    NANOMODIFIED BACKBONES FOR POLYIMIDES WITH DIFUNCTIONAL AND MIXED-FUNCTIONALITY ENDCAPS
    3.
    发明申请
    NANOMODIFIED BACKBONES FOR POLYIMIDES WITH DIFUNCTIONAL AND MIXED-FUNCTIONALITY ENDCAPS 有权

    公开(公告)号：US20160060377A1

    公开(公告)日：2016-03-03

    申请号：US14473232

    申请日：2014-08-29

    Applicant: THE BOEING COMPANY

    Inventor： Thomas K. Tsotsis

    IPC: C08F238/00 ,  C08F226/06

    CPC classification number: C08F238/00 ,  C08F226/06 ,  C08G73/101 ,  C08L79/08

    Abstract: Polyimides containing a backbone with at least one nanoparticle component and made from oligomers having endcaps that are difunctional or a mix of di- and monofunctionality are provided. The endcaps may be nadic or phenylethynyl. The backbone may be wholly inorganic or made from a mixture of inorganic and organic groups. The oligomers may be created in-situ using standard polymerization of monomeric reactants chemistry using a solvent or may be provided as a pre-imidized compound that may be either a solid or liquid. It is believed that the nanoparticle component of the polymer backbone provides superior thermo-oxidative stability verses unmodified organic backbones. It is further believed that providing difunctional or a mixture of di- and monofunctional endcaps allows for increased crosslinking to provide improved strength and stiffness verses wholly monofunctional endcapped oligomers for polyimides. The nanoparticle is part of the backbone of the polymer and not solely a pendant group.

    Barrier coating system
    5.
    发明授权
    Barrier coating system 有权

    公开(公告)号：US10253192B2

    公开(公告)日：2019-04-09

    申请号：US15250040

    申请日：2016-08-29

    Applicant: THE BOEING COMPANY

    Inventor： Thomas K. Tsotsis

    IPC: B32B9/00 ,  C09D5/24 ,  C09D171/00 ,  C09D133/24 ,  C09D179/08 ,  C09D179/00 ,  C09D183/04 ,  C09D5/00 ,  B32B9/04

    Abstract: The present disclosure provides a barrier-coating structure that includes a polymer-matrix composite having a first surface and a second surface. The barrier-coating structure includes a flexible layer having a first surface and a second surface and a sol-gel layer having a first surface and a second surface. The first surface of the flexible layer contacts the second surface of the flexible layer. The barrier-coating structure includes a barrier layer having a first surface and a second surface. The sol-gel and/or the barrier layer may comprise one or more reactive substituents. The first surface of the barrier layer may be a laser-ablated surface.

    Nanomodified backbones for polyimides with difunctional and mixed-functionality endcaps
    9.
    发明授权
    Nanomodified backbones for polyimides with difunctional and mixed-functionality endcaps 有权

    公开(公告)号：US09315633B2

    公开(公告)日：2016-04-19

    申请号：US14473169

    申请日：2014-08-29

    Applicant: THE BOEING COMPANY

    Inventor： Thomas K. Tsotsis

    IPC: C08G77/388

    CPC classification number: C08G77/388 ,  C08G73/101 ,  C08G73/1014 ,  C08L79/08

    Abstract: Polyimides containing a backbone with at least one nanoparticle component and made from oligomers having endcaps that are difunctional or a mix of di- and monofunctionality are provided. The endcaps may be nadic or phenylethynyl. The backbone may be wholly inorganic or made from a mixture of inorganic and organic groups. The oligomers may be created in-situ using standard polymerization of monomeric reactants chemistry using a solvent or may be provided as a pre-imidized compound that may be either a solid or liquid. It is believed that the nanoparticle component of the polymer backbone provides superior thermo-oxidative stability verses unmodified organic backbones. It is further believed that providing difunctional or a mixture of di- and monofunctional endcaps allows for increased crosslinking to provide improved strength and stiffness verses wholly monofunctional endcapped oligomers for polyimides. The nanoparticle is part of the backbone of the polymer and not solely a pendant group.

    METHODS AND SYSTEMS FOR AUTOMATED STRINGER COMPACTION AND FORMING
    10.
    发明申请
    METHODS AND SYSTEMS FOR AUTOMATED STRINGER COMPACTION AND FORMING 有权

    公开(公告)号：US20240367350A1

    公开(公告)日：2024-11-07

    申请号：US18310079

    申请日：2023-05-01

    Applicant: The Boeing Company

    Inventor： Thomas K. Tsotsis

    IPC: B29B11/16 ,  B29B11/12 ,  B29C70/68

    Abstract: Examples relate to automated stringer compaction and forming techniques. An example technique involves heating one or more layers of fibrous material having thermally activatable material above an activation temperature of the thermally activatable material and forming, by a forming tool, the one or more layers having thermally activatable material into a first fabric subelement. The forming tool is adjusted based on a first set of dimensions corresponding to the first fabric subelement. The technique also involves removing the first fabric subelement from the forming tool, integrating the first fabric subelement into a preform to form a complete element where the preform includes at least the first fabric subelement and a second fabric subelement. The technique further involves infusing, within a mold tool, the complete element with resin, and curing the complete element infused with resin to form the composite structure (e.g., a composite stringer).

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