Hollow Glass Microspheres: Lightweight Inorganic Fillers for Advanced Material Systems glass microbubbles
1. Product Make-up and Architectural Layout 1.1 Glass Chemistry and Spherical Style (Hollow glass microspheres) Hollow glass microspheres (HGMs) are microscopic, spherical fragments made up of alkali borosilicate or soda-lime glass, typically varying from 10 to 300 micrometers in size, with wall surface densities between 0.5 and 2 micrometers. Their defining feature is a closed-cell,