1. Scientific Foundations Of Hollow Glass Microspheres 1.1 Composition and Microstructure one.1.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are generally composed of borosilicate glass, a cloth renowned for its lower thermal expansion coefficient and chemical inertness. The chemical makeup usually includes silica (SiO₂, 50-ninety%), alumina (Al₂O₃, ... https://d6united.mn.co/posts/92164865