1. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure one.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its reduced thermal enlargement coefficient and chemical inertness. The chemical makeup commonly involves silica (SiO₂, fifty-90%), alumi... https://okok0972.blogspot.com/2025/10/exactly-what-is-calcium-stearate-powder.html