1. Scientific Foundations of Hollow Glass Microspheres one.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are primarily composed of borosilicate glass, a cloth renowned for its lower thermal enlargement coefficient and chemical inertness. The chemical makeup typically features silica (SiO₂, 50-90%), alumina (Al₂... https://www.geto.space/post/74062_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html