3M™ Glass Bubbles for Thermal Insulation
The high strength and low thermal conductivity (0.06 – 0.2 W·m-1·K-1 at 0°C)* of 3M™ Glass Bubbles make them ideal additives in pipeline and riser insulation. These inert particles are completely compatible with all other components of the insulating system, including polyurethane, polypropylene and epoxy. What's more, 3M™ Glass Bubbles are virtually insoluble in water…providing better utility in underwater applications.
Choose the grade of 3M™ Glass Bubbles that is right for your application:
| Bubble
| Bubble Crush Strength (psi)
| Bubble Density (g/ml)
| Calculated Thermal Conductivity* (W·m-1·K-1)
|
| K46 |
6000 |
0.46 |
0.170 |
| S32 |
2000 |
0.32 |
0.150 |
| S35 |
3000 |
0.35 |
0.155 |
| S38 |
4000 |
0.38 |
0.160 |
| S38HS |
5500 |
0.38 |
0.160 |
| S38XHS |
5500 |
0.38 |
0.160 |
*Calculated Thermal Conductivity of Glass Syntactic Polyurethane (GSPU) Foam at 40 Volume % Loading, assuming a thermal conductivity of 0.19 W·m-1·K-1 for unfilled polyurethane.
