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3M™ Glass Bubbles K20

3M Product Number K20
  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
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Product Details

3M™ Glass Bubbles K20 have a density of 0.2 g/cm3 and an isostatic crush strength of 500 psi / 34 bar

3M™ glass bubbles K20 are used extensively in shallow water buoyancy applications. Their low density (0.2 g/cm3) provides reliable buoyancy, and their high isostatic strength makes them an ideal choice when processing or buoy depth requires more strength. And, like all 3M glass bubbles, K20 bubbles are compatible with thermoset resins like polyurethane and epoxy, and are virtually insoluble in water.

  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
  • Reduced dielectric constant
  • Thermal conductivity reduction
  • Temperature resistance
Specifications
Capabilities
Chemical Resistance, Lightweighting, Temperature Resistance
Color (unaided eye)
White, powdery
Composition
Soda-lime-borosilicate glass
Density (g/cc)
0.2
Density Range (g/cm3)
0.20 - 0.29
Industries
Construction, Paints and Coatings, Rubber and Plastic, Transportation
Particle Size (D50 Micron)
60
Particle Size Range (D50 Micron)
60 - 69, 60 - 69
Shape
Hollow spheres with thin walls
Strength (MPa)
3.4
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