Table 5.
Radiographic and physical properties for samples of PMC-780 Dry polyurethane rubber and epoxy containing various amounts of glass bubbles
| Modified PMC-780 Dry polyurethane rubber | Modified epoxy resin | |||
|---|---|---|---|---|
| Glass bubbles percent by mass of urethane | Density [g/cm3] | Average measured HU (SD) | Glass bubble percent by mass of epoxy | Average measured HU (SD) |
| 0.0 | 1.06 | 38 (9.5) | 0.0 | 182 (6.1) |
| 2.5 | 0.96 | −63 (11) | 2.0 | 100 (7.2) |
| 3.5 | 0.92 | −114 (8.0) | 3.0 | 28 (7.2) |
| 5.0 | 0.88 | −133 (9.2) | 4.0 | 24 (6.5) |
| 7.5 | 0.81 | −193 (10) | 6.0 | −50 (7.5) |
| 10 | 0.76 | −246 (8.8) | 8.0 | −130 (6.8) |
| 10 | −175 (13) | |||
HU, Hounsfield unit; SD, standard deviation.
HUs were measured using a clinical CT scanner (Somatom Definition Edge, Siemens) with 0.75 mm slice thickness, 120 kV tube potential, 350 mAs, reconstructed with B40s medium kernel.