EPOXY RESIN COMPOSITIONS, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIALS

    公开(公告)号:US20210269635A1

    公开(公告)日:2021-09-02

    申请号:US17276623

    申请日:2019-09-20

    IPC分类号: C08L63/00

    摘要: This invention relates to an epoxy resin composition for fiber-reinforced composite materials, which contains the following constituent components (A), (B), and (C). Component (A) contains at least one poly-naphthalene-based epoxy resin, component (B) contains at least one alicyclic epoxy resin and/or a divinylarene diepoxide resin, and component (C) contains at least one amine curing agent. This epoxy resin composition, containing a specific combination of particular types of epoxy resin and curatives, provides high heat resistance and high flexural modulus under extreme environmental conditions. More particularly, a cured resin prepared by the epoxy resin composition offers well balanced mechanical properties that are suitable for preparing fiber-reinforced composite materials useful in aircraft components, spacecraft components, automobile components, artificial satellites components, industrial components, and the like.

    BENZOXAZINE RESIN COMPOSITION, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIAL

    公开(公告)号:US20210024748A1

    公开(公告)日:2021-01-28

    申请号:US16971381

    申请日:2019-03-19

    IPC分类号: C08L79/04 C08J5/24

    摘要: A benzoxazine resin composition for a fiber-reinforced composite material is provided which contains at least a component [A] having a peak reaction temperature and a component [B] having a peak reaction temperatures that may be within 50° C. of each other. Component [A] includes at least one multifunctional benzoxazine resin. Component [B] includes at least one cycloaliphatic epoxy resin represented by Formula (I): This benzoxazine resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer a benzoxazine resin composition for a fiber-reinforced composite material where the cured material obtained by heating having superior performance in extreme use environments, such as high temperature and high moisture.

    Epoxy resin compositions and fiber-reinforced composite materials prepared therefrom

    公开(公告)号:US10829633B2

    公开(公告)日:2020-11-10

    申请号:US16340530

    申请日:2017-10-19

    摘要: An epoxy resin composition for a fiber-reinforced composite material, containing at least components [A], [B], [C], [D], and [E], wherein the epoxy resin composition when cured has a glass transition temperature greater than 220° C. and a storage modulus, as defined by a specific method, less than 35 MPa, as determined from an elastic shear modulus measured at a temperature of at least 35° C. higher than the glass transition temperature, wherein the components [A], [B], [C], [D], and [E] are:[A] at least one naphthalene-based epoxy resin having an EEW between 190 and 260 g/mol;[B] at least one epoxy resin having a functionality of three or more;[C] at least one amine curing agent;[D] at least one latent acid catalyst; and[E] at least one cycloaliphatic epoxy resin.This epoxy resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer an epoxy resin composition for a fiber-reinforced composite material where the cured material obtained by heating has high levels of heat resistance and microcrack resistance.

    SIZING AGENT-COATED CARBON FIBERS, PROCESS FOR PRODUCING SIZING AGENT-COATED CARBON FIBERS, PREPREG, AND CARBON FIBER REINFORCED COMPOSITE MATERIAL
    8.
    发明申请
    SIZING AGENT-COATED CARBON FIBERS, PROCESS FOR PRODUCING SIZING AGENT-COATED CARBON FIBERS, PREPREG, AND CARBON FIBER REINFORCED COMPOSITE MATERIAL 审中-公开
    尺寸代理涂层碳纤维,生产尺寸涂层碳纤维的方法,PREPREG和碳纤维增强复合材料

    公开(公告)号:US20140329075A1

    公开(公告)日:2014-11-06

    申请号:US14369136

    申请日:2012-12-18

    IPC分类号: D06M15/55

    摘要: Sizing agent-coated carbon fibers includes: a sizing agent including an aliphatic epoxy compound (A) and at least containing an aromatic epoxy compound (B1) as an aromatic compound (B); and carbon fibers coated with the sizing agent, wherein the sizing agent-coated carbon fibers have an (a)/(b) ratio of 0.50 to 0.90 where (a) is a height (cps) of a component at a binding energy (284.6 eV) assigned to CHx, C—C, and C═C and (b) is a height (cps) of a component at a binding energy (286.1 eV) assigned to C—O in a C1s core spectrum of a surface of the sizing agent applied onto the carbon fibers analyzed by X-ray photoelectron spectroscopy using AlKα1,2 as an X-ray source at a photoelectron takeoff angle of 15°.

    摘要翻译: 施胶剂包覆的碳纤维包括:包含脂族环氧化合物(A)并且至少含有作为芳族化合物(B)的芳族环氧化合物(B1)的施胶剂; 涂布有施胶剂的碳纤维,其中施胶剂涂覆的碳纤维的(a)/(b)比为0.50〜0.90,其中(a)是结合能的成分的高度(cps)(284.6 eV)分配给CHx,C-C和C = C,(b)是在表面的C1s核心光谱中分配给C-O的结合能(286.1eV)处的成分的高度(cps) 通过X射线光电子能谱分析的施胶剂施加到碳纤维上,使用AlKα1,2作为X光源,光电子起飞角为15°。