3M™ Glass Bubbles K20, Bulk

3M Product Number K203M ID 7000079972
  • Reduction of density and improving buoyancy
  • Thermal condutivity reduction
  • Higher filler loading feasible and lower VOC for paints and coatings
  • good strength-to-density ratio
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Product Details

3M™ Glass Bubbles K20HS are hollow microspheres made of soda-lime borosilicate glass with a true density of 0.20 g/cm³ and an isostatic crush strength of 750 psi / 52 bar.

The K20HS Glass Bubbles can be compounded in a variety of thermoset polymers to reduce the density of the composite. These composites can be incorporated into deep sea syntatctic foam for buoyancy modules to improve the uplift properties of a system at minimal foam volumes. They offer good strength-to density ratio, making them suitable for a variety of applications: buoyancy, coatings, adhesives, sealants, and thermoset resins systems.

  • Reduction of density and improving buoyancy
  • Thermal condutivity reduction
  • Higher filler loading feasible and lower VOC for paints and coatings
  • good strength-to-density ratio
  • Reduced dielectric constant
  • Temperature resistance
  • Chemical stability and inertness
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
Paints and Coatings, Transportation
Particle Size (D50 Micron)
60
Particle Size Range (D50 Micron)
60 - 69, 60 - 69, 60 - 69
Shape
Hollow spheres with thin walls
Strength (MPa)
3.4