The UV-crosslinked polyethylene insulation material series products are mainly made of polyethylene as raw material, with photoinitiators, crosslinkers, antioxidants and processing aids added, and are made by twin-screw extrusion and granulation. The product has excellent mechanical properties and strong resistance to environmental stress cracking; it is easy to process and has a fine and smooth surface.
Product application: The product reaches the crosslinked state after being irradiated by LED UV crosslinking equipment in the molten state, which fully complies with the JB/T10437-2004 standard and can be used to produce wire and cable insulation layers.
| Test items | Test Method | Unit | Typical Value |
| Tensile Strength | GB/T1040 | MPa | 15.0-18.0 |
| Elongation at break | GB/T1040 | % | 480.0-610.0 |
| Heat Aging Test（135℃ 168HR） | |||
| Maximum change rate of tensile strength | GB/T2951.2 | % | ﹣5~﹢10 |
| Maximum change rate of elongation at break | GB/T2951.2 | % | ﹣7~﹢12 |
| Thermal Stretching（200±3）℃×15min×0.2MPa | |||
| Maximum elongation under load | GB/T2951.5 | % | 40.0-70.0 |
| Maximum permanent elongation after cooling | GB/T2951.5 | % | ﹣10~0 |
| Impact brittle temperature (-76℃) | GB5470 | 个 | 0/30 |
| Number of fractures/number of samples | |||
| Dielectric strength | GB/T1408.1 | MV/m | 39 |
| Dielectric loss factor 50Hz, 20℃ | GB1409 | - | 0.5×10^-3 |
| Relative dielectric constant 50Hz, 20℃ | GB1409 | - | 2.19 |
| Volume resistivity 20℃ | GB1410 | Ω.m | 7.40×10^14 |
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