NO. | Project | Indicator (H) | ||
1 | TENSILE PROPERTY | Tensile strength/MPa ≥ | 12.0 | |
Fracture elongation rate/% ≥ | 500 | |||
2 | Heat treatment size change rate/% ≤ | 2.0 | ||
3 | Low temperature bending | No cracks at -40 ℃ | ||
4 | Impermeability | 0.3MPa, impermeable for 2 hours | ||
5 | impact resistance | 0.5kg · m, impermeable | ||
6 | Joint peeling strength/(N/mm) ≥ | 4.0 or damaged coil material | ||
7 | Right angle tear strength/(N/mm) ≥ | 60 | ||
8 | Water absorption rate (70 ℃ 168h)/% ≤ | 4.0 | ||
9 | Thermal aging (115 ℃) | Time/h | 627 | |
appearance | No bubbles, cracks, delamination, bonding, and pores | |||
Tensile strength retention rate/% ≥ | 90 | |||
Breaking elongation retention rate/% ≥ | 90 | |||
Low temperature bending | No cracks at -40 ℃ | |||
10 | chemical resistance | appearance | No bubbles, cracks, delamination, bonding, and pores | |
Tensile strength retention rate/% ≥ | 90 | |||
Breaking elongation retention rate/% ≥ | 90 | |||
Low temperature bending | No cracks at -40 ℃ | |||
11 | Artificial climate accelerated aging | Time/h | 1500h | |
appearance | No bubbles, cracks, delamination, bonding, and pores | |||
Tensile strength retention rate/% ≥ | 90 | |||
Breaking elongation retention rate/% ≥ | 90 | |||
Low temperature bending | No cracks at -40 ℃ |