Description and Application 產品描述和用途
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是熱塑性低煙無鹵絕緣料。不含Pb、Ba、Cd、Cr、Sn、Sb六大重金屬。具有優異的物理機械性能和阻燃性能，可耐溫-40℃～70℃，其性能均能滿足RoHS的標準要求。主要用于通信電纜，控制電纜和電力電纜的絕緣層。
Processing Indicator 加工工藝
Recommend to use special screw for low-smoke halogen-free compound with L/D=20-25.
采用低煙無鹵專用螺桿，長徑比L/D=20-25。
Model
牌號 |
Machine Barrel Temperature
機筒溫度 |
Molding Temprature
機頭溫度 |
| EJW70/EJW70C/EJW70A |
130-140℃ |
150-160℃ |
Physical and Electrical Properties 物理及電性能指標
Item
試驗項目 |
Unit
單位 |
Specification
技術要求 |
| EJW70 |
EJW70C |
EJW70A |
Density
密度 |
g/cm3 |
≤1.5 |
≤1.5 |
≤1.55 |
Tensile Strength
拉伸強度 |
MPa |
≥10 |
≥10 |
≥10 |
Elongation at Break
斷裂伸長率 |
% |
≥150 |
≥150 |
≥150 |
Aging Conditions
熱老化條件 |
/ |
100℃×168h |
Tensile Strength Variation
拉伸強度變化率 |
% |
±25 |
±25 |
±25 |
Elongation Variation
斷裂伸長率變化率 |
% |
±25 |
±25 |
±25 |
Thermal
Deformation
熱變形 |
Condition |
℃ |
70℃×6h |
| Variation |
% |
≤50 |
≤50 |
≤50 |
Dielectric Strength
介電強度 |
MV/m |
≥20 |
≥20 |
≥20 |
Brittle Temperature With Low Temperature Impact
低溫沖擊脆化溫度 |
℃ |
-40 |
-40 |
-40 |
20℃Volume Resistivity
20℃體積電阻率 |
Ω.m |
≥1.0×1012 |
Water Absorption吸水性實驗
14 days at 70℃ |
mg/cm2 |
≤5 |
≤5 |
≤5 |
Oxygen Index
氧指數 |
% |
≥32 |
≥36 |
≥38 |
HCLGas Evolution
HCL氣體發生量 |
Mg/g |
≤1.0 |
≤1.0 |
≤1.0 |
PH Value
PH值 |
/ |
≥4.3 |
≥4.3 |
≥4.3 |
Smoke Density煙密度
– No-flame Mode無焰模式
– Flame Mode有焰模式 |
Ds max |
≤200
≤100 |
≤200
≤100 |
≤200
≤100 |
Conductivity
電導率 |
ｕS/mm |
≤10 |
≤10 |
≤10 |
Toxicity Index
毒性指數 |
/ |
≤5.0 |
≤5.0 |
≤5.0 |
Attentions 注意事項：
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，材料一經開封，建議12小時之內用完。
2）Please ensure the screw, barrel , hopper are thoroughly cleaned before operation. Avoid bringing impurities while processing.
加工前確保螺桿、機筒、加料斗徹底清理干凈，加工過程中嚴禁帶入雜質。
3）If you need a faster extrusion. Please accelerate screw speed gradually to avoid inadequate plasticizing which may cause rough surface of the cables.
如果要快速擠出時，請慢慢逐漸加快螺桿轉速，以免塑化不良，電纜表面毛糙。
