1. Scientific Foundations Of Hollow Glass Microspheres one.1 Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are generally composed of borosilicate glass, a material renowned for its low thermal growth coefficient and chemical inertness. The chemical make-up normally consists of silica (SiO₂, fifty-ninety%), alumin... https://www.pinlap.com/posts/35707