Loading Port:Shanghai
Payment Terms:TT OR LC
Min Order Qty:-
Supply Capability:3000 Tons kg/month
Black Resistance to Electricity Mark PE compound
ⅰ、Type and application
Type | Product | Application |
NDGJ-01 | Black Weatherability and Resistance to Electricity Mark HDPE Insulating Compound for Aerial Cables | Applied to less than 10KV aerical cables as insulation which has the requirements of resistance to electricity mark. |
NDPE-22 | Black Resistance to Electricity Mark PE Jacket Compound | Applied to ADSS fiber cables as jacket which has the requirements of resistance to electricity mark. |
ⅱ、NDPE is a black and resistance to electricity mark PE jacketcompound special for ADSS cables, which based on PE polymer. NDPE has specialadditive. It has very good performance of resistance to electricity mark, andexcellent electrical properties, weatherability, tenacity, abrasive resistanceand excellent resistance to environmental stress crack. Meeting DL/T 788-2001standard.
ⅲ、Processing
The NDPE compound suits to process with extruder which L/D is 25 orabove 25. And it should be dried before using, the temperature is 90℃.
the following temperature(℃) profile of extruder is recommended:
Zone | 1 Zone | 2 Zone | 3 Zone | 4 Zone | Head | Die |
Temperature | 185 | 215 | 220 | 240 | 245 | 250 |
Note: The processing parameters are for reference only, optimalconditions may vary according to the equipment used. The cooling water tankshould be used sectionally cooling with warm-water echelon in order to reduceinternal stress.
ⅳ、Storage andtransport
Packaging：25kg/bag， PE membrane inside bag and Kraft outside bag.
Storage and transport: Avoiding in direct sunlight and weathering.The storage place should be in clean, cool, dry, and ventilated conditions.
Ⅴ、Properties
Table
Test Item | unit | NDGJ-01 | NDPE-22 | ||
Standard Value | Typical Value | Standard Value | Typical Value | ||
Density | g/cm3 | 0.945-0.978 | 0.95 | ≤1.2 | 1.12 |
（2.16kg） Melt Flow Rate | g/10min | ≤0.4 | 0.25 | ≤0.4 | 0.33 |
Tensile Strength | MPa | ≥20.0 | 28.0 | ≥18.0 | 20.0 |
Yield Strength | MPa | ≥16.0 | 21.9 | ≥15.0 | 16.0 |
Elongation at Break | % | ≥650 | 780 | ≥650 | 700 |
Low Temp. Elongation at Break | % | ≥175 | 350 | ≥175 | 240 |
Impact Brittleness Temp. | ℃ | ≤-76 | Pass | ≤-50 | Pass |
（115℃4h） Thermal Deformation | % | — | 1 | — | 1 |
Vicat Softening Temp. | ℃ | ≥110 | 127 | ≥110 | 127 |
Volume Resistivity | Ω﹒m | ≥1.0×1014 | 6.0×1014 | ≥1.0×1014 | 4.0×1014 |
Dielectric Strength | MV/m | ≥35 | 36 | ≥30 | 33 |
Dielectric Constant |
| ≤2.45 | 2.41 | — | 2.5 |
Dielectric loss tangent |
| ≤0.001 | 0.0008 | — | — |
Resistance to environmental stress crack | h | ＞500 | pass | ＞500 | Pass |
Resistance to thermal stress crack | h | ≥96 | Pass | ≥96 | Pass |
Carbon black dispersity | Scatter | ≥6 | 7 | ≥6 | 7 |
Note:1、The sample made method is thermoplastic pressing which is accord toGB9352 standard.
Typical value should not be as standard.
