|
Description of products
Gdzpe-8125 is a highly conductive flame retardant polyethylene sheathed material. Compared with ordinary flame-retardant polyethylene sheathed material, high electrical flame-retardant polyethylene sheathed material has better strength elongation, dielectric strength and volume resistivity, and is suitable for the sheath of power cables above 35kV.
Main performance indicators
|
Item
|
GDZPE-8125
|
|
Density≤g/cm3
|
1.32
|
|
tensile strength≥MPa
|
13
|
|
fracture growth rate ≥％
|
400
|
|
20°C时volume resistivity≥Ω.m
|
1.5*10”
|
|
dielectric strength≥MV/m
|
20
|
|
after ageing
|
test temperature°C
|
110±2
|
|
testing time °C
|
240
|
|
tensile strength gradient%
|
±25
|
|
breaking elongation gradient%
|
±25
|
|
oxygen index≥
|
26
|
|
carbon black content(for black sheath only)
|
3.0±1.0
|
|
impact embrittlement test -40 °C
|
|
|
200 °C oxidation induction time(OIT) ≥min
|
30
|
|
resistance to environmental stress cracking≥Fo/h
|
500
|
|
rat performance (14 days)(if so)
|
protection ratio2 0.9
|
|
termite resistance (group method)(if so)
|
termite moth resistance grade I
|
Processing technology
This product processing performance is superior, suitable for extrusion pipe, half extrusion pipe, extrusion die extrusion. The length-diameter ratio of the extrusion screw is 18-25, the compression ratio is 3:1, and the temperature control in each area of the barrel should have a cooling device.
|
Model
|
Barrel temperature
|
Nose temperature
|
|
GDZPE-8125
|
140~160°C
|
150~170°C
|
Notes
① Before processing, ensure that screw, barrel, hopper thoroughly clean, processing H process is strictly prohibited to bring impurities.
② Once the raw materials are opened, it is recommended to use them within 24 hours. If the package is damaged, it should be dried before use.
|
