Thermal insulation sheet and manufacturing method therefor
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTatsuhiro Ooshiro, Takashi Tsuruta
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Abstract
A thermal insulation sheet is used that includes a fiber, a silica aerogel contained in the fiber, and a fibrous cavity. A method for manufacturing a thermal insulation sheet is used that includes: an impregnation step of impregnating a silica aerosol in a nonwoven fabric substrate containing a fiber that is insoluble in an acidic solution, and a fiber that is soluble in the acidic solution; a gelling step of gelling the silica aerosol; a hydrophobizing step of hydrophobizing the gel; and a drying step of drying the gel. The fiber that is soluble in the acidic solution is dissolved in the hydrophobizing step.
Claims4
A method for manufacturing a thermal insulation sheet, the method comprising:
- an impregnation step of impregnating a silica aerosol solution in a nonwoven fabric substrate containing a first fiber that is insoluble in an acidic solution, and a second fiber that is soluble in the acidic solution;
- a gelling step of gelling the silica aerosol solution;
- a hydrophobizing step of hydrophobizing the gel;
- and
- a drying step of drying the gel,
- the second fiber being dissolved in the hydrophobizing step.
Dependencies are inferred from the claim text.