1. Scientific Foundations Of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally 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%), alumin... https://okok0972.blogspot.com/2025/10/how-is-calcium-stearate-powders.html