One. Scientific Foundations of Hollow Glass Microspheres 1.1 Composition and Microstructure one.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are primarily made up of borosilicate glass, a material renowned for its low thermal enlargement coefficient and chemical inertness. The chemical makeup usually includes silica (SiO₂, fifty-90%), alumina (Al... https://webyourself.eu/posts/1604925