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Shanghai Yong he Sheng Material Technology Co., LTD

Locomotive cable material

Product name, item and use

Name Item Use
Irradiation cross-linked flame-retardant cable material for iron standard locomotive cables YHS70017-TB Meet TB / T1484.1-2010 standard, oil resistant
Radiation cross-linked flame-retardant cable material for national standard locomotive cables YHS70017-GB Meet GB/T12528-2008 standard, oil resistant
Irradiated cross-linked flame-retardant cable material for European standard locomotive cables YHS70017-EN Meets EN 50264 standards, high oil resistance requirements
Radiation cross-linked flame-retardant cable material for Japanese standard locomotive cables YHS70017-JC Meets JIS C 3005 standard, elongation ≥360%, oil resistant
Radiation cross-linked flame retardant cable material for American Standard locomotive cables YHS70017-GE Comply with GE purchasing specifications, high temperature oil resistance, low temperature resistance
Locomotive cable ultra-thin wall material YHS-007-125 Meets EN50306-1 requirements

Product introduction

This kind of material is made of special polyolefin and oil-resistant elastomer as the base material, and it is added with flame retardants, smoke suppressants, cross-linking sensitizers, antioxidants and processing aids, etc., and mixed and plasticized into granules. It not only has excellent physical and mechanical properties, electrical properties, flame retardant properties and processing technology performance, but also has good low temperature and oil resistance, suitable for various standards of locomotive and vehicle cables with oil resistance requirements.

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±5 150±5 160±5 165±5 170±5 175±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

performance index

Project Units YHS70017-T B YHS70017-GB YHS70017-EN YHS70017-JC YHS70017-GE YHS-00-125
Density g/c 1.42 1.43 1.43
Original Mpa 12.5 11.8 12.4 13.6 14.2 20
Original % 200 190 180 420 260 120
Air heat ageing ℃ ×h 158×168 158×168 158×168 150×96 170×168 158×168
Tensile strength % +7 +8 +5 +5 +13 +8
Rate of change of % -11 -12 -8 -6 -16 -12
Thermal extension test 200℃×15min×0.2MPa
Elongation under % 14 14 15 15 4 17
Permanent deformation % 1.0 0.5 1 1.5 1.0 0.2
Resistance to mineral oil (IRM902) ℃× 100×70 100×70 100×72 70×40 150℃*3d 与 * 100×72
Change rate of tensile strength h % -26 -25 -28 -15 150℃ 6d vs -8 -28
Elongation at break rate % -20 -21 -22 -8 -6 -22
Fuel oil resistant（IRM903） ℃× h 70×168 70×168 70×168 70×4 - 70×168
Change rate of tensile strength % 28 29 26 16 - 26
Elongation at break rate % 23 25 20 10 - 20
Low temperature brittleness temperature ℃ -40 Pass -40 Pass -40 Pass -40 Pass -55 Pass -40 Pass
20°C volume resistivity Ω.cm 3.2×1014 2.0×1014 2.5×1014 3.0×1014 3.0×1014 2.5×1014
Dielectric strength MV/ 28 27 27 27 26 26
Oxygen % 34 34 34 30 30 35
Smoke density Flame method 62 58 87 61 - 87
Flameless method
Content of halogen acids mg/g 0 0 0 0 0 0
PH value - 6.2 5.8 5.9 6.1 - 5.9
Conductivity μs/mm 0.5 0.6 0.8 0.6 - 0.8
Toxicity index - 1.4 1.8 1.2 1.9 -

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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