Product description 产品描述
Chemical cross-linkable PE insulating compound for EHV power cable which regard advanced LDPE resin as the main material, adds antioxidant, cross-linking agent and other accessory addhesives, is manufactured by advanced closed extruder. It has excellent extrusion property and physical property, impurity content is controlled within limits. This product is mainly used for the insulation of High voltage &EHV cross-linking cables. It is applicable for 220KV and below cross-linking cables.
电力电缆用可化学交联超高压超纯净聚乙烯绝缘料是以优质低密度聚乙烯树脂为主要原材料，加入抗氧剂、交联剂等配合剂，采用先进的封闭式混炼装置加工而成，它兼有良好的挤出性能和物理性能，杂质含量符合要求，专用于生产高压、超高压交联电线电缆绝缘，本产品适用于220KV及以下交联电线电缆。
Processing Indicator 加工工艺
Recommend to process with the PE extruder.
建议使用聚乙烯专用挤出机进行加工。
| Model 牌号 |
Machine Barrel Temperature 机筒温度 |
Molding Temperature 机头温度 |
| XEJ-220 | 115-120℃ | 118-120℃ |
| Item 试验项目 |
Unit 单位 |
Standard Data 标准值 |
|
| Density 密度 |
g/cm3 | 0.922±0.003 | |
| Tensile Strength 拉伸强度 |
MPa | ≥17.0 | |
| Elongation at Break 断裂伸长率 |
% | ≥450 | |
| 20℃Volume Resistivity 20℃体积电阻率 |
Ω·m | ≥1.0×1014 | |
| 20℃Dielectric Strength,50Hz 20℃介电强度, 50Hz |
MV/m | ≥30.0 | |
| 20℃Dielectric Constant,50Hz 20℃介电常数, 50Hz |
--- | ≤2.3 | |
| 20℃Dielectric Dissipation Factor,50Hz 20℃介质损耗因数, 50Hz |
--- | ≤0.0003 | |
| Impurity Content（Per 1.0Kg） 杂质含量（每1.0Kg） 100-250μm 250-625μm ＞650 μm |
个 个 个 |
0 0 0 |
|
| Air Aging Condition 热空气老化条件 135℃×168h |
Tensile Strength Variation After Aging 拉伸强度变化率 |
% | ±20 |
| Elongation Variation After Aging 断裂伸长变化率 |
% | ±20 | |
| Hot Set Test Condition 热延伸试验条件 200℃×0.2MPa×15min |
Hot Elongation 负荷下伸长率 |
% | ≤75 |
| Permanent Deformation After Cooling 冷却后永久形变 |
% | ≤5 | |