One. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely composed of borosilicate glass, a fabric renowned for its reduced thermal enlargement coefficient and chemical inertness. The chemical makeup generally contains silica (SiO₂, fifty-ninety%), alum... https://www.scoop.it/topic/okok0972/p/4168402012/2025/10/14/how-is-calcium-stearate-powder-s-molecular-framework-engineered