Description and Application 产品描述和用途
EJW70，EJW70C，EJW70A are thermoplastic low-smoke halogen-free flame-retardant insulation compounds, which don’t contain any heavy metal like Pb, Ba, Cd, Cr, Sn and Sb. The properties can meet RoHS Standard. They have excellent mechanical and flame-retardant properties with temperature resistant from -40℃to 70℃. They are mainly used for the insulation of communication cables, control cables and power cables.
EJW70，EJW70C，EJW70A是热塑性低烟无卤绝缘料。不含Pb、Ba、Cd、Cr、Sn、Sb六大重金属。具有优异的物理机械性能和阻燃性能，可耐温-40℃～70℃，其性能均能满足RoHS的标准要求。主要用于通信电缆，控制电缆和电力电缆的绝缘层。
Processing Indicator 加工工艺
Recommend to use special screw for low-smoke halogen-free compound with L/D=20-25.
采用低烟无卤专用螺杆，长径比L/D=20-25。
Model
牌号 |
Machine Barrel Temperature
机筒温度 |
Molding Temprature
机头温度 |
| EJW70/EJW70C/EJW70A |
130-140℃ |
150-160℃ |
Physical and Electrical Properties 物理及电性能指标
Item
试验项目 |
Unit
单位 |
Specification
技术要求 |
| EJW70 |
EJW70C |
EJW70A |
Density
密度 |
g/cm3 |
≤1.5 |
≤1.5 |
≤1.55 |
Tensile Strength
拉伸强度 |
MPa |
≥10 |
≥10 |
≥10 |
Elongation at Break
断裂伸长率 |
% |
≥150 |
≥150 |
≥150 |
Aging Conditions
热老化条件 |
/ |
100℃×168h |
Tensile Strength Variation
拉伸强度变化率 |
% |
±25 |
±25 |
±25 |
Elongation Variation
断裂伸长率变化率 |
% |
±25 |
±25 |
±25 |
Thermal
Deformation
热变形 |
Condition |
℃ |
70℃×6h |
| Variation |
% |
≤50 |
≤50 |
≤50 |
Dielectric Strength
介电强度 |
MV/m |
≥20 |
≥20 |
≥20 |
Brittle Temperature With Low Temperature Impact
低温冲击脆化温度 |
℃ |
-40 |
-40 |
-40 |
20℃Volume Resistivity
20℃体积电阻率 |
Ω.m |
≥1.0×1012 |
Water Absorption吸水性实验
14 days at 70℃ |
mg/cm2 |
≤5 |
≤5 |
≤5 |
Oxygen Index
氧指数 |
% |
≥32 |
≥36 |
≥38 |
HCLGas Evolution
HCL气体发生量 |
Mg/g |
≤1.0 |
≤1.0 |
≤1.0 |
PH Value
PH值 |
/ |
≥4.3 |
≥4.3 |
≥4.3 |
Smoke Density烟密度
– No-flame Mode无焰模式
– Flame Mode有焰模式 |
Ds max |
≤200
≤100 |
≤200
≤100 |
≤200
≤100 |
Conductivity
电导率 |
ｕS/mm |
≤10 |
≤10 |
≤10 |
Toxicity Index
毒性指数 |
/ |
≤5.0 |
≤5.0 |
≤5.0 |
Attentions 注意事项：
1）The compound should be dried before using if the package is broken. Once package is open, recommend to run out within 12 hours.
原料破包需烘干后才能使用，材料一经开封，建议12小时之内用完。
2）Please ensure the screw, barrel , hopper are thoroughly cleaned before operation. Avoid bringing impurities while processing.
加工前确保螺杆、机筒、加料斗彻底清理干净，加工过程中严禁带入杂质。
3）If you need a faster extrusion. Please accelerate screw speed gradually to avoid inadequate plasticizing which may cause rough surface of the cables.
如果要快速挤出时，请慢慢逐渐加快螺杆转速，以免塑化不良，电缆表面毛糙。
