Product description 产品描述和用途
SEJ90-2-ZR is two-step silan cross-linkable PE insulation compound for low-voltage cables. It is a kind of insulations of low-voltage cables and control cables through squeeze tube mold production process. It is made from silan grafted A, catalyst B and halogenous flame-retardant masterbatch SEJ90-ZR. The density of SEJ90-ZR is 1.82±0.2g/cm
3，the proportion between A and B is 95:5. The
Adding amount of flame-retardant masterbatch changes according to the section surface sizes of the cables (10%~30%). It is mainly suitable for the cables of American Standards like XHH, XHHW, XHHW-2, RHH, RHW, RHW-2 and SIS. Large adding amount for small section surface size, and small amount for large section surface size. The general purposes are to make sure the cables pass horizontal burning test of UL-44. Working voltage for wire and cables are 1KV and below, the highest working temperature is 90℃.
SEJ90-2-ZR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低压电力电缆和工业电缆的绝缘。该材料由硅烷接枝A料、催化剂B料、含卤阻燃母粒SEJ90-ZR 三部分组成，阻燃母粒密度为1.82±0.2g/cm
3，接枝A料和催化剂B料的比例为95比5，阻燃母粒的添加量需根据电线电缆的截面积规格变化（10%~30%），主要是用于美标的XHH、XHHW、XHHW-2、RHH、RHW、RHW-2、SIS线缆，大截面电缆添加的较少，小截面积添加的较多，目的是要保证电缆通过UL-44的水平燃烧试验，电线电缆工作电压为1KV及以下，最高工作温度为90℃
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-ZR |
160-190℃ |
195-200℃ |
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 |
Tensile Strength
拉伸强度 |
MPa |
≥10.5 |
Elongation at Break
断裂伸长率 |
% |
≥150% |
Brittle Temperature with Low Temperature
低温脆化温度 |
℃
失效数 |
-25
≤15/30 |
20℃Volume Resistivity
20℃体积电阻率 |
Ω·m |
≥1.0×1013 |
Flammability
燃烧性 |
/ |
通过FT2水平燃烧 |
Air Aging Condition
热空气老化条件
121±2℃×168h |
Tensile Strength Variation After Aging
拉伸强度变化率 |
% |
±30 |
Elongation Variation After Aging
断裂伸长变化率 |
% |
±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 |
