Preparation and Characterization of Silica-Fiber Aeroger Composite Heat Insulations

Abstract

The purpose of this study is to determine the best method for stacking silica-fiber mats and silica-aerogel core
layer to create an excellent sandwich heat insulation. It is believed that a thermal expansion mat for vehicle
catalytic converters will be its usual use. This study looks at two alternative preparation methods: one employs a
wet method to fabricate the silica-aerogel core layer, while the other uses a dry method where silica short fibers
are pre-cured alongside the silica-aerogel core layer. The composite heat insulation can be hot-molded to create
rigid structures, including curved surfaces, because silica fiber has the ability to produce a condensation reaction
that forms Q4 silica structures when heated above 300°C. This material is ideal for use as a thermal expansion mat
in catalytic converters. The manner in which