One. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure 1.one.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are primarily composed of borosilicate glass, a cloth renowned for its lower thermal enlargement coefficient and chemical inertness. The chemical makeup ordinarily incorporates silica (SiO₂, fifty-90%), alum... http://myworldgo.com/profile/okok0972/action_id/3410077/show_comments/1