Thermal insulation sheet and manufacturing method therefor
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United States of America Patent
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Oct 17, 2023
Grant Date -
May 6, 2021
app pub date -
Jan 11, 2021
filing date -
Mar 18, 2016
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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.
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