1. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure one.1.1 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://community.wongcw.com/posts/1164874