3M™ Glass Bubbles K1 are hollow glass microspheres that are ideal for a number of applications including – shallow (e.g. up to 2,000 feet of sea water) water flotation devices and lightweight wall repair compound. These low-cost, economical bubbles have a very low typical density (0.125 g/cc) and an isostatic crush strength of 250 psi.
K1 is the Glass Bubbles grade with the lowest density and designed for a variety of applications where very low density and low thermal conductivity is needed. Typical applications are lighweitght buoyancy modules, wall repair compounds, thermal insulating paints, construction materials, and emusion explosives.
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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 (g/cc)
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0.125
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Density Range (g/cc)
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0.10 - 0.19
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Industries
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Construction, Insulation and Buoyancy, Mining, Paints and Coatings
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Net Weight (Metric)
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20 kg
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Particle Size (D50 Micron)
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65
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Particle Size Range (D50 Micron)
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60 - 69, 60 - 69, 60 - 69
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Strength (MPa)
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1.7
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