1. 3M Products

3M™ Glass Bubbles K25

  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
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Product Details
  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
  • Reduced dielectric constant
  • Thermal conductivity reduction
  • Temperature resistance

3M™ Glass Bubbles K25 have a density of 0.25 g/cm3 and an isostatic crush strength of 750 psi / 51 bar.

Low density (0.25 g/cm3) and high isostatic strength make 3M glass bubbles K25 ideal additives for shallow water buoyancy applications or processing applications where high strength is needed. In addition, like all 3M glass bubbles, K25 bubbles are compatible with thermoset resins like polyurethane and epoxy, and are virtually insoluble in water.

Specifications
Capabilities
Chemical Resistance, Lightweighting, Temperature Resistance
Color (unaided eye)
White, powdery
Composition
Soda-lime-borosilicate glass
Density (g/cc)
0.25
Density Range (g/cm3)
0.20 - 0.29
Industries
Construction, Paints and Coatings, Rubber and Plastic, Transportation
Particle Size (D50 Micron)
55
Particle Size Range (D50 Micron)
50 - 59, 50 - 59
Shape
Hollow spheres with thin walls
Strength (MPa)
5.1
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