One. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure one.one.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a cloth renowned for its lower thermal enlargement coefficient and chemical inertness. The chemical makeup ordinarily involves silica (SiO₂, fifty-90%), alumina (A... https://www.pinlap.com/posts/35703