Product Description and Application 產品描述和用途
EHH is a kind of jacketing compounds with high-density polyethylene as the basic raw material, and mainly used for the jacketing of fibre optical cables and submarine power cables. The highest working temperature is 80℃.
EHM70 is a kind of jacketing compounds with medium-density polyethylene as the basic raw material, and mainly used for the jacketing of communication cables, control cables, signal cables and fibre optical cables. The highest working temperature is 70℃.
EHL70 is a kind of jacketing compounds with low-density polyethylene as the basic raw material, and mainly used for the jacketing of communication cables which is environmental stress cracking resistant, control cables, signal cables and power cables. The highest working temperature is 70℃.
EHH是以高密度聚乙烯為主要基材的電纜護層級材料，主要用于光纜和海底電力電纜的護層，最高工作溫度80℃。
EHM70是以中密度聚乙烯為主要基材的電纜用護層級材料，主要用于通信電纜、控制電纜、信號電纜和光纜的護層，最高工作溫度70℃。
EHL70是以線性低密度聚乙烯為基材的電纜用護層級材料，主要用于耐環境開裂的通信電纜、控制電纜、信號電纜和電力電纜的護層，最高工作溫度70℃。
Processing Indicator 加工工藝
Recommend to process with the PE extruder with L/D is more than 25.
建議使用長徑比大于25的聚乙烯用擠出機進行加工。
Model
牌號 |
Machine Barrel Temperature
機筒溫度 |
Molding Temprature
機頭溫度 |
| EHH |
150-220℃ |
220-230℃ |
| EHL |
130-200℃ |
190-210℃ |
| EHM |
150-220℃ |
220-230℃ |
Physical and Electrical Properties 物理和電氣性能
Item
試驗項目 |
Unit
單位 |
Technical requirements
技術要求 |
| EHH |
EHL |
EHM |
Density
密度 |
g/cm3 |
0.950~0.978 |
0.940~0.960 |
0.920~0.945 |
| 熔融指數 |
g/10min |
≤0.5 |
≤0.85 |
≤2.0 |
Tensile Strength
拉伸強度 |
MPa |
≥20.0 |
≥20.0 |
≥14.0 |
Elongation at Break
斷裂伸長率 |
% |
≥650 |
≥650 |
≥700 |
Brittle Temperature with Low Temperature
低溫脆化溫度 |
°C |
≤-76 |
≤-76 |
≤-76 |
Vicat Softening Point
維卡軟化點 |
°C |
≥110 |
---- |
---- |
Resistance to environmental stress cracking F0
耐環境應力開裂F0 |
h |
≥500 |
≥500 |
≥500 |
20℃Volume Resistivity
20℃體積電阻率 |
Ω·m |
≥1.0×1014 |
≥1.0×1014 |
≥1.0×1014 |
20℃Dielectric Strength,50Hz
20℃介電強度, 50Hz |
MV/m |
≥25.0 |
≥25.0 |
≥25.0 |
20℃Dielectric Constant,50Hz
20℃介電常數, 50Hz |
/ |
≤2.80 |
≤2.75 |
≤2.80 |
Carbon Black Dispersion
碳黑分散性 |
Carbon Black Dispersion
碳黑分散度 |
/ |
≥6 |
≥6 |
≥6 |
Absorption Coefficient
吸收系數 |
/ |
≥400 |
≥400 |
≥400 |
Carbon Black Content
碳黑含量 |
% |
2.60±0.25 |
2.60±0.25 |
2.60±0.25 |
200 ℃Oxidation Induction Time
200℃氧化誘導期 |
min |
≥30 |
≥30 |
≥30 |
