1. 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 features silica (SiO₂, 50-90%), alumina (Al₂O... http://myworldgo.com/profile/okok0972/action_id/3410029/show_comments/1