1. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are generally composed of borosilicate glass, a cloth renowned for its minimal thermal enlargement coefficient and chemical inertness. The chemical makeup commonly contains silica (SiO₂, fifty-ninety%), alum... https://padlet.com/okok0972149980/okok093-p57jo614mu84dt15/wish/yEPVZknVzz02Qb0Y