Aerogel thermal insulation mat and preparation method thereof

Abstract

The present application discloses an aerogel thermal insulation mat and a preparation method thereof. The thermal insulation mat is prepared by coating a surface of a fiber mat with a composite slurry, followed by sintering. The composite slurry is prepared from raw materials including a functionalized silica aerogel, an inorganic silicate-modified resin, chopped glass fibers and a dual coupling agent in specific percents by weight. The dual coupling agent allows the chopped glass fibers and the functionalized silica aerogel to form an interwoven network structure, thereby enhancing the interfacial bonding force. The functionalized silica aerogel reduces water absorption and improves structural compactness. The thermal insulation mat obtained exhibits optimized mechanical properties and enhanced tear resistance; reinforced structural stability and significantly reduced powder shedding rate; and excellent water resistance with a three-dimensional protective structure formed, thereby providing a technical support for the application in complex environments.

Dependencies are inferred from the claim text.