MICROSPHERES GLASS BUBBLES – LOW DENSITY EPOXY SYNTACTIC FOAM FILLER – 1.5 POUND

3M™ Scotchlite™
Hollow Glass Microspheres
LOW DENSITY EPOXY FILLER
1.5 Pounds Net Weight
Approximately 1 Gallon In Volume

3M™ Glass Bubbles are engineered hollow glass microspheres that are alternatives to conventional epoxy fillers for lowering weight per unit volume (density) while improving compressive strength performance.

S38-HS 3M™ Scotchlite™  is an engineered hollow glass microspheres, also known as microballoons that are inert fillers typically incorporated into a binder system such as an epoxy resin to lower its density and improve buoyancy, process sanding, dimensional stability and reduce shrinkage. This unique low-density filler is used in a wide range of industries to reduce part weight, lower costs and enhance mechanical properties. The unique spherical shape of Scotchlite glass bubbles offers a number of important benefits including higher filler loading with minimal viscosity increase, reduce exothermic temperatures for large castings while minimizing shrinkage and warping of the casted part.

Add this low-density filler to an epoxy resin system and create what is known as a “SYNTACTIC FOAM” in the composite materials industry. Syntactic foams are commonly used as light-weight adhesives and casting materials that demonstrate improved chemical resistance. It is typically used as a low-density coating, a tooling compound or as a dimensional stable casting resin for composite parts fabricating.

Cured cast parts are typically buoyant in water also yields higher dimensional stability, improved machining and sanding and low porosity. The microspheres are hollow glass bubbles thus creating a very strong foam systems with closed cells. This will yield a low porosity integral skin that provides moisture resistance as well as low gas permeability over a wide service temperature.