Close
iM30K Hollow Glass Microspheres are ultra-high strength, hollow spherical glass particles engineered for the most extreme pressure, load-bearing and mechanically demanding applications. Manufactured from advanced soda-lime borosilicate glass using precision-controlled processes, iM30K delivers exceptionally high isostatic crush strength, making it one of the strongest hollow glass microsphere grades available.
Despite their very high strength, iM30K microspheres still provide effective lightweighting compared to solid mineral fillers, enabling reduced density without compromising structural integrity. Their uniform spherical morphology ensures excellent flow, stable rheology and consistent dispersion in polymers, composites, cementitious systems, coatings, adhesives and sealants.
The ultra-high crush strength of iM30K glass bubbles allows them to withstand extreme processing pressures during extrusion, injection molding and compounding, as well as very high hydrostatic pressures encountered in deep-well oil & gas, subsea and defense environments. This makes iM30K particularly suitable for critical applications where lower-strength microspheres cannot survive, and where long-term mechanical reliability is essential.
Primary and secondary oil well cementing slurries for deep and ultra-deep wells
High-pressure drilling, completion and workover fluids
Syntactic foams and buoyancy modules for deep-sea and subsea applications
Reduced hydrostatic pressure without loss of compressive strength
High-performance lightweight concrete and structural grouts
Load-bearing precast elements and infrastructure components
Cement-based protection and insulation systems exposed to stress
High-load thermoset composites (epoxy, polyester, vinyl ester)
Thermoplastic compounds requiring extreme pressure resistance
Structural composite components exposed to continuous mechanical stress
Sheet Molding Compounds (SMC) and Bulk Molding Compounds (BMC)
Automotive, electrical and industrial molded parts
Improved flow and surface quality under high molding pressures
Defense-grade composite panels and structural reinforcements
| Property | Typical Value |
|---|---|
| Appearance | White, free-flowing powder |
| True Density | ~0.600 g/cc |
| Crush Strength (Isostatic) | ~30,000 psi |
| Average Particle Size (D50) | ~16 µm |
| Top Cut Particle Size | ~55 µm |
| Chemical Composition | Soda-lime borosilicate glass |
| Shape | Hollow spherical |
| Solubility | Insoluble in water |
| Combustibility | Non-combustible |
iM30K Hollow Glass Microspheres are non-hazardous under normal industrial handling conditions. Avoid excessive dust generation. Use appropriate personal protective equipment such as safety glasses, gloves and dust masks. Always refer to the latest Safety Data Sheet (SDS) prior to handling and use.
Store in a cool, dry and well-ventilated area, protected from moisture and contamination. Keep containers tightly sealed when not in use to preserve product integrity.