1. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its low thermal growth coefficient and chemical inertness. The chemical make-up normally contains silica (SiO₂, fifty-ninety%), alumina (Al... https://okok0972.blogspot.com/2025/10/exactly-what-is-calcium-stearate-powder.html