One. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure one.one.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely composed of borosilicate glass, a fabric renowned for its low thermal growth coefficient and chemical inertness. The chemical make-up generally involves silica (SiO₂, fifty-90%), alumina (Al₂O₃... https://sites.google.com/u/0/d/1ddXgp-GnsfUqOaRS3BFWlUN3gzl_cu1v/p/17VZq1QdfhnfMrdo9ZvBkMG_t6KM0zsQF/publishview