- 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
3M™ Glass Bubbles K20 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 K20 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
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Attribute Name
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Value
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|---|---|
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Capabilities
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Chemical Resistance, Lightweighting, Temperature Resistance
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Color (unaided eye)
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White, powdery
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Composition
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Soda-lime-borosilicate Glass
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Density Range (g/cm3)
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0.20 - 0.29
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|
Industries
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Paints and Coatings, Transportation
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|
Net Weight (Metric)
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300 kg
|
|
Particle Size (D50 Micron)
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60 μm
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|
Particle Size Range (D50 Micron)
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60 - 69, 60 - 69, 60 - 69
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|
Shape
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Hollow Spheres with Thin Walls
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|
Strength (MPa)
|
3.4
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