METHOD AND APPARATUS FOR PRODUCING A LAMINATE FROM ONE OR MORE LAYERS OF MATERIAL

    公开(公告)号:US20190022919A1

    公开(公告)日:2019-01-24

    申请号:US16081740

    申请日:2017-03-01

    摘要: The present invention concerns a method and apparatus (14a) for winding a section of each of one or more layers of material (18a) around a mandrel (30) and about a longitudinal axis of the mandrel (30), wherein each layer of material (18a) includes fibers and the winding is performed such that, for the wound section of each layer of material (18a), each of a majority of the fibers is angularly disposed relative to the longitudinal axis of the mandrel (30), and: (1) disposing a tape (82) over the layer(s) of material (18a) such that at least a portion of the tape (82) overlies at least a portion of the wound section of each layer of material (18a) and a long dimension of the portion of the tape (82) is substantially parallel to the longitudinal axis of the mandrel (30); and/or (2) spot-joining adjacent sections of the wound section(s) together.

    CURABLE EPOXY COMPOSITIONS
    5.
    发明申请

    公开(公告)号:US20190330411A1

    公开(公告)日:2019-10-31

    申请号:US16239709

    申请日:2019-01-04

    摘要: A curable epoxy composition comprises 100 parts by weight of an epoxy resin composition comprising one or more epoxy resins, each independently having an epoxy equivalent weight of at least 2; 30 to 200 parts by weight of an aromatic dianhydride curing agent of the formula wherein T and y are as provided herein; and 0.1 to 5 parts by weight of a heterocyclic accelerator, based on the total parts by weight of the epoxy resin composition and the aromatic dianhydride curing agent, wherein the heterocyclic accelerator comprises a substituted or unsubstituted C3-6 heterocycle comprising 1 to 4 ring heteroatoms, wherein each heteroatom is independently the same or different, and is nitrogen, oxygen, phosphorus, silicon, or sulfur, wherein the composition does not contain a monoanhydride curing agent.

    MULTIPLE PLY LAYERED COMPOSITE HAVING LOW AREAL WEIGHT

    公开(公告)号:US20170371980A1

    公开(公告)日:2017-12-28

    申请号:US15533704

    申请日:2016-08-10

    IPC分类号: G06F17/50 B29C65/00 B32B41/00

    摘要: A global optimization tool may be used to predict characteristics of a multiple ply layered composite as a condition of one or more continuous variables and/or one or more binary variables. For example, the global optimization tool may predict characteristics of a composite for a large range of fiber orientation angles of each of layer of the ply. The optimization tool may include solving a mixed integer nonlinear programming (MINLP) model to obtain a multiple ply layered composite design that is optimized relative to objectives, such as areal weight and cost. Thus, the global optimization tool may be able to identify composite designs with lower areal weight and/or lower cost than the composite designs identified by prior art trial and error methods or heuristic algorithms. When a composite design is identified as meeting certain criteria that are input to the global optimization tool, that composite design may be manufactured.

    FIBER-REINFORCED COMPOSITES INCLUDING AND/OR FORMED IN PART FROM FIBROUS NON-WOVEN LAYERS

    公开(公告)号:US20200039180A1

    公开(公告)日:2020-02-06

    申请号:US16379082

    申请日:2019-04-09

    IPC分类号: B32B5/26 B32B5/02

    摘要: This disclosure includes fiber-reinforced composites including and/or formed in part from fibrous non-woven layers, stacks of layers that can be consolidated to form such composites, articles, such as portable electronic device housing panels, including such composites, and methods for making such composites and articles. In some composites, at least one of the non-woven layer(s) includes: (1) a first thermoplastic material that may be present as a first set of resin fibers; (2) a second thermoplastic material that may be present as a second set of resin fibers, the second thermoplastic material having a transition temperature and/or a low-shear viscosity that is higher than that of the first thermoplastic material; (3) a first set of reinforcing fibers; and/or (4) a second set of reinforcing fibers of a type distinct from that of the first set of reinforcing fibers.