Silane cross- linked polyethylene cable materials are a PE-based cross-linkable plastic material which is produced by mixing and absorption, with accessory ingredients such as silane , initiators , catalysts and antioxidants.
1. Grade, name and application of products
|
Grade |
Trademark |
name |
application |
|
YJG-10 |
G1001 |
Silane crosslinked polyethylene insulation materials at 10kV and below |
Insulation for wires and cables at 10kV and below |
|
G1003 |
Silane cross-linked polyethylene insulation materials for small size wire and cable |
Insulation for small size wires and cables at 10kV and below |
|
G1005 |
Silane cross-linked polyethylene insulation materials for wire and cable |
Insulation for wires and cables at 10kV and below |
|
YJWG-10 |
G1002 |
Overhead silane crosslinked polyethylene insulation materials at 10kV and below |
Insulation for overhead wires and cables at 10kV and below |
2. Executive Standard
JB/T 10437-2004、JB/T 10260-2014
3. Products properties
The products properties are shown in Table 1.
4. Processing
Single screw extruder is used in processing, with the aspect ratio of screw L/D≥25. The recommended reference processing temperature is shown below:
|
Sections |
Section 1 |
Section 2 |
Section 3 |
Section 4 |
Section 5 |
Flange |
Extrusion head |
Die |
|
Temperature/℃ |
150±10 |
175±10 |
185±10 |
190±10 |
195±10 |
190±10 |
195±10 |
170±10 |
5. Packaging, transportation and storage
Package: net weight of each bag (25±0.2) kg. Each bag is vacuum packaged by aluminium plastic composite bag.
Transportation and storage: no exposure to sunshine and rain during transportation. It should be stored in clean, cool, dry and ventilated warehouse.
|
Test items |
YJG-10 |
YJWG-10 |
|
Tensile strength/MPa ≥ |
|
|
|
Tensile strain at break/% ≥ |
|
|
|
Impact brittle transition temperature（-76℃） |
Pass |
Pass |
|
Air heat aging |
Test condition |
|
|
|
The change rate of tensile strength/% ≤ |
|
|
|
The biggest change rate of tensile strain at break/% ≤ |
|
|
|
Thermal expansion |
Test condition |
|
|
|
Elongation under load/% ≤ |
|
|
|
Rate of permanent deformation after cooling/% ≤ |
|
|
|
Gel content ≥ |
|
|
|
Dielectric loss factor（50Hz，20℃）≤ |
|
|
|
Relative permittivity（50Hz，20℃）≤ |
|
|
|
Volume resistivity/Ω·m |
|
|
|
Dielectric strength/（MV/m）≥ |
|
|
|
Resistance to artificial weather≥ |
|
|
|
42 days after aging at artificial resistant weather
|
The change rate of tensile strength/%≤ |
|
|
|
The change rate of tensile strain at break/%≤ |
|
|
|
Comparison between 21 and 42 days after aging at artificial resistant weather
|
The change rate of tensile strength/%≤ |
|
|
|
The change rate of tensile strain at break/%≤ |
|
|