Sheet molding compound and carbon fiber composite material molded article

    公开(公告)号:US11512412B2

    公开(公告)日:2022-11-29

    申请号:US17015381

    申请日:2020-09-09

    Abstract: Provided is a sheet molding compound having excellent thick portion-molding properties that can inhibit the occurrence of internal cracks even during the molding of a thick portion and enables a carbon fiber composite material molded article to be excellently released from a die. Also provided is a carbon fiber composite material molded article. The sheet molding compound of the present invention contains a fiber substrate (A) containing carbon fiber and a thermosetting resin composition (B), in which an average fiber length of the carbon fiber is 5 mm or more, and a volumetric molding shrinkage rate of the thermosetting resin composition (B) is 0.5% or more and 4.4% or less. Furthermore, the carbon fiber composite material molded article of the present invention has a thick portion having a thickness of 10 mm or more, in which the thick portion is formed of a cured material of the sheet molding compound of the present invention.

    Binder-treated fibrous materials
    10.
    发明授权

    公开(公告)号:US10655006B2

    公开(公告)日:2020-05-19

    申请号:US15885946

    申请日:2018-02-01

    Abstract: A liquid binder composition for binding fibrous materials in the fabrication of resin-infusible preform is disclosed. The binder composition is an aqueous dispersion containing (a) one or more multifunctional epoxy resins, (b) at least one thermoplastic polymer, (c) one or more surfactants selected from anionic surfactants, nonionic surfactants, and combinations thereof, (d) water, and is essentially free of organic solvents. Also disclosed is an emulsification process for producing the liquid binder composition.

Patent Agency Ranking