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3KV及以下二步法硅烷交联架空绝缘料 SEJ90-2-KK(N)
Two-step Silane Cross-linkable PE Overhead Insulation Compound (≤3KV) ...
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Product description and Application 产品描述和用途
SEJ90-2-KK(N) is two-step silane cross-linkable polyethylene insulation compound for low-voltage cables. It is mainly used for the insulation of low-voltage overhead cables through squeeze tube mold production process. Cables working voltage is 3KV and below, the highest working temperature is 90℃. The color of this product is black if there are no speical explanations.
SEJ90-2-KK(N)是低压电线电缆用二步法硅烷交联聚乙烯绝缘料。主要用于通过挤管式模具生产的中低压架空电缆的绝缘。电线电缆工作电压为3KV及以下,最高工作温度为90℃;在未经特殊说明本产品默认为黑色。
 
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 Temprature
模头温度
SEJ90-2-KK(N) 155-175℃ 180-190℃


Physical and Electrical Properties 物理和电气性能
Item
试验项目
Unit
单位
Technical requirements
技术要求
Density
密度
g/cm3 0.922±0.005
Tensile Strength
拉伸强度
MPa ≥13.0
Elongation at Break
断裂伸长率
% ≥300
Brittle Temperature with Low Temperature
低温脆化温度

失效数
-76
≤15/30
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 ≥25.0
20℃Dielectric Constant,50Hz
20℃介电常数, 50Hz
---- ≤2.35
Air Aging Condition
热空气老化条件
135±2℃×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
Artificial Weathering Aging
人工气候老化0-1008h
Tensile Strength Variation After Aging
拉伸强度变化率
% ±30
Elongation Variation After Aging
断裂伸长率变化率
% ±30
Artificial Weathering Aging
人工气候老化504-1008h
Tensile Strength Variation After Aging
拉伸强度变化率
% ±30
Elongation Variation After Aging
断裂伸长率变化率
% ±30
Hot Set Test Condition
热延伸试验条件
200×0.2MPa×15min
1mmthick 95 ℃ boiled 2 hours test
一毫米厚95℃水煮
2小时测试
Hot Elongation
负荷下伸长率
% ≤100
Permanent Deformation after Cooling
冷却后永久形变
% ≤5