1. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure one.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely made up of borosilicate glass, a cloth renowned for its lower thermal growth coefficient and chemical inertness. The chemical make-up generally consists of silica (SiO₂, fifty-ninety%), alumina (... https://padlet.com/okok0972149980/okok093-p57jo614mu84dt15/wish/yEPVZknVzz02Qb0Y