SYSTEMS, COMPOSITIONS, AND METHODS FOR ENHANCED ELECTROMAGNETIC SHIELDING AND CORROSION RESISTANCE

    公开(公告)号:US20210040334A1

    公开(公告)日:2021-02-11

    申请号:US16697296

    申请日:2019-11-27

    摘要: Aspects of the present disclosure provide a coating composition that includes a polymer material comprising an electrically conductive polymer; and a coated or partially coated magnetic material comprising a magnetic material and an antioxidant material. Aspects of the present disclosure further provide a method of making a coating composition that includes introducing, under first conditions, a magnetic material to a passivation solution comprising an antioxidant to form a coated (or partially coated) magnetic material; and introducing, under second conditions, the coated (or partially coated) magnetic material to a mixture comprising a polymer material to form a coating composition. Aspects of the present disclosure further provide a coated substrate that includes a film and a substrate, the film including a coating composition that includes an electrically conductive polymer, a magnetic material, and an antioxidant.

    METHOD FOR FORMING MULTILAYER COATING FILM

    公开(公告)号:US20210039136A1

    公开(公告)日:2021-02-11

    申请号:US17044472

    申请日:2019-11-29

    发明人: Akihiro NISHIMURA

    摘要: Provided is a new means for enhancing the orientation of a luster pigment in the formation of a multilayer coating film including a coating film containing a scaly luster pigment.
    A method for forming a multilayer coating film, comprising: an intermediate coating step of applying an aqueous intermediate coating composition (A) to a surface of an article to be coated to form an uncured aqueous intermediate coating film, a first aqueous base coating step of applying a first aqueous base coating composition (B) onto the uncured aqueous intermediate coating film to form an uncured first aqueous base coating film, a second aqueous base coating step of applying a second aqueous base coating composition (C) containing a scaly luster pigment onto the uncured first aqueous base coating film to form an uncured second aqueous base coating film, a clear coating step of applying a clear coating composition (D) onto the uncured second aqueous base coating film to form an uncured clear coating film, and a curing step of heat curing at once the resulting uncured aqueous intermediate coating film, uncured first aqueous base coating film, uncured second aqueous base coating film, and uncured clear coating film to form a multilayer coating film, wherein the solid concentrations (% by mass) of the uncured first aqueous base coating film and the second aqueous base coating film satisfy specific conditions.