When heated, the volume increases 50 to 170X depending on the grade used.

Expandable hollow glass microspheres benefits include weight reduction, improved moldability, thermal and sound absorption.

Hollow glass microspheres are a precision foaming agent that are characterized by easy control of specific gravity, retention of closed cells, small sphere diameter and uniform distribution.

Hollow glass microspheres provide the flexibility to be foamed in resin and within high permeability materials such as fibers and paints.