Insulation Properties of the Monolithic and Flexible Aerogels Prepared at Ambient Pressure

Abstract

This paper reports a method for scale-up fabrication of hydrophobic and flexible aerogels derived from a combined precursor methyltrimethoxysilane and vinyltrimethoxysilane. The method developed enables the preparation of large pieces of monolithic aerogels at ambient pressure drying conditions. The thermal and acoustic insulation properties of the flexible aerogels were investigated and compared with the commercially available insulation materials.

High Nanopore Volume Tetrethoxysilane Based Aerogels Prepared with Addition of N, N-Dimethylformamide at Different Stage of the Sol-Gel Process

“…Silica aerogels are nano-porous materials that have gained extensive attention in the past decades, owing to their extraordinary properties, such as low density [1], large surface area [2], high porosity, and extremely low thermal conductivity [3,4]. For these extraordinary characteristics, silica aerogels are presently of interest in thermal insulation [5,6], acoustic insulation [7,8], catalysts and sensors [9 -11]. These characteristics are derived from their mesoporous structures, which are formed in the sol-gel polymerization of silicon alkoxides, and preserved under supercritical drying or ambient pressure drying [12 -14].…”

Electrostatic‐driven self‐assembled silica aerogel/tethacryloxyethyltrimethyl ammonium chloride/PMMA ternary nanocomposite with thermal insulation phase interfaces

“…1. Introduction: Silica aerogels are highly porous, lightweight and good thermal insulator materials obtained by supercritical drying techniques [1][2][3][4][5][6][7][8]. Porous materials are categorised into three types based on their pore diameters which are namely: micropores, mesopores, and macropores.…”