- Density reduction
- Higher filler loading feasible and lower VOC for paints and coatings
- Chemical stability and inertness
- Temperature resistance
3M™ Glass Bubbles K25 are hollow microspheres made of soda-lime borosilicate glass with a true density of 0.25 g/cm³ and an isostatic crush strength of 750 psi / 52 bar.
This general purpose Glass Bubbles grade was designed for use in a variety of applications such as paints and coating, wall plasters, and polyurethane and epoxy systems for tooling boards. Furthermore, it is suggested to be used in intermediate depth (e.g. up to 5,000 feet / 1524 meters of sea water) buoyancy applications, such as drill riser buoyancy models.
- Density reduction
- Higher filler loading feasible and lower VOC for paints and coatings
- Chemical stability and inertness
- Temperature resistance
- Thermal conductivity reduction
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Attribute Name
|
Value
|
|---|---|
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Capabilities
|
Chemical Resistance, Lightweighting, Temperature Resistance
|
|
Color (unaided eye)
|
White, powdery
|
|
Composition
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Soda-lime-borosilicate Glass
|
|
Density Range (g/cm3)
|
0.20 - 0.29
|
|
Industries
|
Construction, Insulation and Buoyancy, Paints and Coatings
|
|
Net Weight (Metric)
|
40 kg
|
|
Particle Size (D50 Micron)
|
55 μm
|
|
Particle Size Range (D50 Micron)
|
50 - 59, 50 - 59, 50 - 59
|
|
Shape
|
Hollow Spheres with Thin Walls
|
|
Strength (MPa)
|
5.1
|
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