1. Scientific Foundations Of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely composed of borosilicate glass, a fabric renowned for its reduced thermal growth coefficient and chemical inertness. The chemical make-up generally contains silica (SiO₂, fifty-ninety%), alumina (A... https://www.pearltrees.com/okok5/item753855462