Table 5.
Dynamic mechanical properties of compression molded sheets and 3D printed samples.
Sample | E’ (GPa) at 40 °C | E’ (GPa) at 60 °C | E” (MPa) 1 | Tg, Tan δ 2 (°C) | Tan δ 2 | N (mol/m3) | A | C | r |
---|---|---|---|---|---|---|---|---|---|
PLA-N-C | 2.91 | 0.48 | 0.38 | 65.6 | 2.33 | 2.89 × 104 | |||
PLA-N-B45 | 2.65 | 0.46 | 0.35 | 65.6 | 1.74 | 2.76 × 104 | |||
PLA-N-B60 | 2.56 | 0.38 | 0.37 | 65.0 | 1.42 | 2.31 × 104 | |||
PLA-P-C | 3.21 | 0.43 | 0.38 | 65.8 | 2.47 | 2.58 × 104 | 0.12 | 1.23 | 2.01 |
PLA-P-B45 | 2.66 | 1.07 | 0.45 | 64.4 | 0.76 | 6.41 × 104 | 0.43 | 0.02 | |
PLA-P-B60 | 2.72 | 1.24 | 0.39 | 63.2 | 0.43 | 7.48 × 104 | 0.33 | 1.23 | |
PLA-CF-C | 5.00 | 0.77 | 0.75 | 64.8 | 1.77 | 4.63 × 104 | −0.12 | 1.07 | 5.13 |
PLA-CF-B45 | 5.56 | 1.32 | 0.73 | 65.9 | 1.66 | 7.93 × 104 | 0.73 | 7.82 | |
PLA-CF-B60 | 5.68 | 1.38 | 0.92 | 65.6 | 1.52 | 8.29 × 104 | 0.61 | 8.72 | |
PLA-Cu-C | 3.13 | 0.62 | 0.48 | 64.7 | 1.19 | 3.73 × 104 | 0.52 | 0.83 | 0.12 |
PLA-Cu-B45 | 1.57 | 0.74 | 0.26 | 65.2 | 0.65 | 4.45 × 104 | 0.37 | −0.62 | |
PLA-Cu-B60 | 1.74 | 0.99 | 0.26 | 64.5 | 0.41 | 5.96 × 104 | 0.26 | −0.49 |
1 Peak of loss modulus. 2 Peak of Tan δ.