Table 8 Microplastics powder ratio variation affects JCA model parameters.
From: A sustainable acoustic customization of open porous materials using recycled plastics
Sample | PET powder [g] | PS powder[ g] | Airflow resistivity [Ns/m4] | Porosity [–] | Tortuosity [–] | Viscous characteristic length [μm] | Thermal characteristic length [μm] |
|---|---|---|---|---|---|---|---|
8 | 0.0 | 3.0 | 5668 | 0.91 | 1.56 | 165 | 721 |
9 | 0.5 | 2.5 | 2344 | 0.87 | 1.64 | 112 | 340 |
10 | 1.0 | 2.0 | 2606 | 0.85 | 1.61 | 102 | 302 |
11 | 2.0 | 1.0 | 7003 | 0.92 | 1.67 | 227 | 667 |
12 | 2.5 | 0.5 | 3305 | 0.94 | 1.69 | 151 | 947 |
1 | 3.0 | 0.0 | 1663 | 0.75 | 1.01 | 191 | 287 |
