1. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are primarily made up of borosilicate glass, a cloth renowned for its very low thermal growth coefficient and chemical inertness. The chemical make-up generally contains silica (SiO₂, fifty-ninety%), alumina (... https://diigo.com/0110f1l