| performance items | test standards | Technical index | |||||
| Density range | ISO 845 | 20-40 kg/m³ | |||||
| use temperature | GB/T 1634.2 | -50℃~80℃ | |||||
| tensile strength | ISO 1926 | ≥0.5 MPa;≥0.05 MPa | |||||
| tear strength | GB/T 1040.3 | ≥3.0 N/cm;≥30.0 N/cm | |||||
| water absorption | ISO 62 | ≤0.5%;≤0.01% | |||||
| rebound rate | GB/T 17794-2021 | ≥85% | |||||
| Surface hardness | GB/T 2411 | 18 ° (Allowable error 0 °~+5 °) | |||||