Table 6.
Parameters used in mathematical modeling of FDM process feed rate for the neat LDPE and for the obtained composites.
| Parameter | LDPE0 | LDPE15 | LDPE30 |
|---|---|---|---|
| Solid density [kg/m3] | 902.04 | 942.70 | 983.45 |
| Melt density [kg/m3] | 721.63 | 754.16 | 786.76 |
| Young Modulus [GPa] | 0.200 | 0.208 | 0.219 |
| km [W/m K] | 0.33 | 0.45 | 0.49 |
| Cp [J/kg K] | 2300 | 2028 | 1899 |
| Printing temperature [K] | 483 | 483 | 483 |
| Nozzle length [mm] | 1 | 1 | 1 |
| Nozzle angle [°] | 55 | 55 | 55 |
| Nozzle diameter [mm] | 1 | 1 | 1 |
| Distance between rollers and liquifier, Lf [mm] | 45 | 45 | 45 |
| Critical pressure, Pcr [kPa] | 140.9 | 146.5 | 154.3 |