Table 1.
Nominal characteristics of the used materials.
| Polyamide 12 [24] | Acrylic Acid Ester [25] | ||
|---|---|---|---|
| Average particle size | (µm) | 60 | Not applicable |
| Apparent specific weight | (g/cm3) | 0.435 ÷ 0.445 | Not applicable |
| Sintered density | (g/cm3) | 0.90 ÷ 0.95 | Not applicable |
| Tensile modulus of elasticity | (MPa) | 1700 ÷ 1500 | 1700 ÷ 2200 |
| Tensile strength | (MPa) | 45 ± 3 | 45 ÷ 55 |
| Elongation at break | (%) | 20 ± 5 | 6 ÷ 10 |
| Flexural modulus of elasticity | (MPa) | 1240 ± 130 | 2000 ÷ 2500 |
| Resilience according to Charpy | (kJ/m2) | 53 ± 4 | - |
| Hardness | (Shore D) | 75 ± 2 | - |
| Fusion point | (°C) | 172 ÷ 180 | Not applicable |
| Viscosity at 25 °C (before photopolymerization) | (mPa s) | Not applicable | 1000 ÷ 1400 |
| Density (before photopolymerization) | (g/cm3) | Not applicable | 1.01 |