No. | Item-name | Unit | Requirement | Typical value |
1 | melt phase polycondensation | g/10min | ≤2.0 | 1.3 |
2 | density | g/cm3 | ≤0.940 | 0.935 |
3 | Tensile Strength | MPa | ≥14 | 20 |
4 | Elongation at break | % | ≥600 | 900 |
5 | Low elongation at break | % | — | 475 |
6 | Low-temperature impact brittleness temperature -76 °C breakage | Piece | ≤0/10 | 0/10 |
7 | Resistance to environmental stress cracking | h | ≥500 | >500 |
8 | 200 °C oxidation induction | min | ≥30 | 80 |
9 | Carbon black content | % | 2.60±0.25 | 2.58 |
10 | Carbon black dispersion | fen | ≤3 | 3 |
11 | Dielectric strength | MV/m | ≥25 | 33.5 |
12 | Electric volume resistivity | Ω.m | ≥1×1014 | 6.5×1014 |
13 | Dielectric constant | | ≤2.8 | 2.45 |