公开(公告)号：US12195911B2

公开(公告)日：2025-01-14

申请号：US16877046

申请日：2020-05-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuma Oikawa ,  Tooru Wada ,  Shigeki Sakaguchi ,  Takashi Kubo ,  Takashi Tsuruta ,  Shigeaki Sakatani ,  Daido Komyoji

IPC: H01M10/658 ,  D06M11/79 ,  H01M10/0525 ,  C01B33/158

Abstract: A manufacturing method of a heat insulating sheet of the present disclosure includes a composite generating step of impregnating a nonwoven fiber with a basic sol prepared to generate a composite of a hydrogel-nonwoven fiber, the basic sol being prepared by adding carbonate ester to a water glass composition; and a drying step of drying a liquid contained in the composite at a temperature lower than a critical temperature of the liquid and a pressure lower than a critical pressure of the liquid to remove the liquid from the composite. A heat insulating sheet according to the present disclosure includes an aerogel and a nonwoven fiber, and has a compression rate at 0.30 MPa to 5.0 MPa of 40% or less. In an electronic device of the present disclosure, the heat insulating sheet is disposed between an electronic component and a housing. In a battery unit of the present disclosure, the heat insulating sheet is disposed between batteries. This provides a heat insulating sheet that can be used under a high load and a manufacturing method thereof, and an electronic device and a battery unit including the same.

公开(公告)号：US11577490B2

公开(公告)日：2023-02-14

申请号：US16586858

申请日：2019-09-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuma Oikawa ,  Shigeaki Sakatani ,  Kazuhiro Nishikawa ,  Daido Komyoji

IPC: B32B9/00 ,  C01B33/16 ,  C04B14/06 ,  C01B33/158 ,  B32B5/02 ,  B32B38/08 ,  D06N3/12 ,  B32B5/18

Abstract: A heat insulating material includes an aerogel that has macro-pores and meso-pores. A method for manufacturing a heat insulating material, including: a sol preparation step of adding a gelling agent into sodium silicate such that a molar ratio of the gelling agent relative to NaO2 is 0.1 to 0.75, and adjusting a sol into which macro-pores are introduced by leaving unreacted Na and non-cross-linked oxygen in a siloxane skeleton; an impregnating and gelling step of impregnating a nonwoven fabric fiber structure with the sol to form a composite of hydrogel-nonwoven fabric fiber; a hydrophobizating step of mixing the formed composite of hydrogel-nonwoven fabric fiber with a silylating agent to modify a surface thereof; and a drying step of removing a liquid contained in the surface modified composite of hydrogel-nonwoven fabric fiber by drying under a temperature and pressure lower than respective critical values.