US 11,987,721 B2
Heat-shielding member
Yuka Suzuki, Kanagawa (JP); Yutaka Mabuchi, Kanagawa (JP); Takuma Suzuki, Kanagawa (JP); and Junichi Arai, Kanagawa (JP)
Assigned to NISSAN MOTOR CO., LTD., Yokohama (JP)
Appl. No. 16/973,556
Filed by NISSAN MOTOR CO., LTD., Yokohama (JP)
PCT Filed Jun. 13, 2018, PCT No. PCT/IB2018/000976
§ 371(c)(1), (2) Date Dec. 9, 2020,
PCT Pub. No. WO2019/239178, PCT Pub. Date Dec. 19, 2019.
Prior Publication US 2021/0253898 A1, Aug. 19, 2021
Int. Cl. C09D 179/08 (2006.01); C08K 3/04 (2006.01)
CPC C09D 179/08 (2013.01) [C08K 3/04 (2013.01); F28F 2265/10 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A heat shielding member, comprising:
a base made of a material selected from the group consisting of aluminum, magnesium, iron, and alloys thereof; and
a heat shielding membrane on the base, wherein the heat shielding membrane comprises, in a direction away from the base:
a porous layer including a plurality of pores that are sealed so as not to communicate with a surface of the heat shielding membrane,
a dense layer, and
a heat-resistant layer located at an outermost surface of the heat shielding membrane opposite the base, the heat-resistant layer comprising an inorganic membrane containing silica as a main component, wherein:
the porous layer and the dense layer each comprise a resin and a carbon-based filler,
the resin comprises a polyimide resin, and
a thermal decomposition temperature of the resin is 350° C. or more.