Materials for EPR Locomotive Cables
1.Product Names and Types
Number Product Type Application
1 90℃35KV high pressure EPR insulation material ZL9111-J The series of materials Can be used for 1-35 kvinsulation of rubbers sleeve flexible cables
2 90℃10-20KV medium pressure EPR insulation material ZL9112-J
3 90℃1-6KV low pressure EPR insulation material ZL9113-J
4 medium pressure peelable insulation and shielding material ZL9116-PB Can be used for 1-10kv shield ofrubbers sleeve flexible cables.
5 medium and high pressure conductor shielding material ZL9118-P
6 125℃ vulcanized low-smoke halogen-free lame-retartant oil-resistant elastomer sheath material ZL9114-H  

2.Product Description
2.1Properties:
The materials are of natural color/white color and particle shape, with the basic material of rubber (e.g. EPDM). The hyperoxides are cross-linked mixture of the main vulcanizing system. They can be used in CV (continuous vulcanizing) extrusion product line. The properties are in line with the national standards such as EN50264、TB/T1484 etc.

2.2 Machining Process
2.2.1 Drying treatment should be carried out before the production use.
2.2.2 The CV (continuous vulcanizing) extrusion product line Can be used for production. It is recommended to use screw rods with length-to-diameter ratios between 15:1 and 24:1.
2.2.3 Before extrusion, clean screw rods to make sure product cleanness. It is suggested to add filter screens with sieve number of 20/40 or 20/60 in front of the die to avoid impurity entering during the extrusion process, and to keep flux pressure in order to obtain good appearance and material compaction.
2.2.4.Extruding Temp
      Zone 1           Zone 2            Zone 3            Zone 4            Head            die orifice
ZL9111-J:        75℃                80℃              85℃                85℃                  90℃               85℃
ZL9112-J:        80℃                90℃              95℃                99℃                  99℃               95℃
ZL9113-J:        80℃                90℃              95℃                99℃                  99℃                95℃
ZL9116-PB:     75℃                80℃              85℃                85℃                  90℃                85℃
ZL9118-P:        75℃                80℃              85℃                85℃                  90℃                85℃
ZL9114-H:        75℃               80℃               85℃                85℃                  90℃                 85℃
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