Producing aerogel thermal insulation sheet by central injection method

Abstract

drying and solvent recycling; a hydrolyzed aerogel solution is catalyzed by base and rapidly dispersed into a condensation dispersion solution; the condensation dispersion solution is then rapidly injected into the interior of a roll-shaped or multi-layered fabric substrate from the inside out; a gelation is conducted after the roll-shaped or multi-layered fabric substrate is saturated of the condensation dispersion solution; subsequently, an atmospheric-pressure high-temperature drying technique or a supercritical drying technique, combining a solvent recycling technique, is conducted by using a central injection tube to obtain a roll-shaped or multi-layered aerogel thermal insulation sheet; the entire process may further involve

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