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Materials for high-voltage lines of new energy vehicles

Product name, item and use

Name Item Use
125 ℃ Irradiation cross-linked electric vehicle vehicle high-voltage wire materials YHS70017S-125 Meets ISO6722 C standard, soft and wear-resistant
150 ℃ Irradiation cross-linked electric vehicle vehicle high-voltage wire materials YHS70017S-150 Meets ISO6722 D standard, soft and heat resistant

Product introduction

Irradiation cross-linked flame-retardant polyolefin elastomer cable material YHS70017S series) is based on polyolefin resin, adding high-quality and efficient halogen-free flame retardants, crosslinking sensitizers, antioxidants and other processing aids. Mixing, plasticizing and granulating, it not only has excellent mechanical and physical properties, electrical properties, flame retardant properties and processing performance, but also has high heat resistance, halogen-free, low smoke and other characteristics. This series of XLPO materials is mainly developed for the interior of electric vehicles, and its wires can meet the requirements of the ISO6722 standard.

Extrusion process

When the storage environment is wet or the production surface is required to be high, the particles can be dried in a hot air hopper at 70 ℃ for 1-2 hours.

It is recommended to use a low compression ratio screw extrusion with a compression ratio of 1.2-2.0:1.Before extrusion, the screw should be cleaned to ensure the cleanliness of the product. It is recommended to use 80 mesh or 100 mesh filter screen to avoid impurities in the extrusion process, and to ensure the melt pressure to obtain a good appearance and material density.As the difference between the actual temperature of the melt and the indicated value of the temperature control table varies with the type of extruder, the user is requested to select the appropriate temperature according to the specific situation of the extruder used.The following temperatures can be used as reference for start-up and commissioning:

Position Cylinder I Cylinder Ⅱ Cylinder Ⅲ Cylinder Ⅳ Cylinder Ⅴ Head and mold
Temperature 120±5 160±5 165±5 170±5 175±5 180±5

Packaging and storage

(25 ± 0.2) kg / bag, inner aluminum plastic composite bag, outer kraft paper bag (or customer specified packaging)

Stored in dry and ventilated place

Prevent sun, rain and water

Storage period is 6 months

Product performance

Test project Units YHS70017S-125 YHS70017S-150
Density g/cm3 1.33 1.34
Hardness Mpa 11.5 12.0
Original elongation at break % 240 220
Air thermal aging (after irradiation) ℃ ×h 不开裂（150×240） 不开裂（175×240）
Heating deformation rate (after irradiation) % -15（125℃×4H） -18（150℃ ×4h）
Thermal overload test (after irradiation) % 不开裂（175℃×6H） 不开裂（200℃×240H）
Hot elongation test - 200℃×15min×0.2MPa
Elongation under load % 18 16
Permanent % 0.2 0.2
Low temperature ℃ -40 pass -40 pass
20°C Volume resistivity Ω.cm 4.0×1014 4.0×1014
20℃ dielectric strength MV/m 32 32
Smoke density Flame 70 80
Flameless 170 180
Halogen acid content mg/g 0 0
PH value - 6.6 6.0
Conductivity μs/mm 0.6 0.6
Toxicity index - 2.0 1.5
(ISO1817 li id C) 23 ± 5 ℃ 20h The finished wire diameter change rate is ≤ 15%; the finished wire has no visible wires and no cracks The finished wire diameter change rate is ≤ 15%; the finished wire has no visible wires and no cracks
Fuel oil (IRM 903) 23 ± 5 ℃ 20h
Mineral oil (IRM 902), 50 ± 3 ℃, 20h
Liquid compatibility

Note: The above data is a typical value obtained by testing the product and is not a standard for testing restrictions.

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