Halogen free environment-friendly flame-retardant heat shrinkable pipe refers to the environment-friendly product that does not contain halogen (F, Cl, Br, I, at), lead, cadmium, chromium, mercury and other toxic substances, and does not emit toxic smoke (hydrogen halide, carbon monoxide, carbon dioxide, etc.) when burning. It is widely used in nuclear power stations, subway stations, telephone exchanges and computer control centers, high-rise buildings, hotels, radio and television stations, important military facilities, oil platforms, and places with relatively concentrated personnel and low air density.
Material performance index
Testing items | Units | Performance index | |||||
1kV | 10kV | 35kV | 24kV | ||||
Operating Temperature
| TypeⅠ | ℃ | -40~125 | ||||
TypeⅡ | ℃ | -40~105 | |||||
Thermal Shrinkage (90～120℃) | Longitudinal Shrinkage Ratio | % | < 10 | ||||
Radial Shrinkage Ratio | % | ≥40 | |||||
Mechanical Properties | Tensile Strength | Mpa | ≥6 | ||||
Elongation at break | % | ＞250 | |||||
Electrical Properties
| 20℃Volume resistivity | Ω·m | ≥1×1012 | ||||
Dielectric strength | kV/mm | ≥20 | ≥20 | ≥13 | ≥16 | ||
Dielectric constant | ε | < 3.5 | |||||
Heat aging Performance Type Ⅰ：158℃×168h Type Ⅱ：135℃×168h | Tensile strength after aging | Mpa | ≥6 | ||||
Change rate of tensile strength | % | ±20 | |||||
Elongation after aging | % | ≥250 | |||||
Change rate of elongation at break | % | ±20 | |||||
Chemical Properties | Corrosive（23±2℃ humidity95% 24h） | —— | Copper is not corrosion | ||||
Low temperature shock（（-40℃×4h） | —— | Not crack | |||||
Oxygen Index | % | ≥27 | |||||
Water absorption | % | < 0.5 | |||||
Toxicity Index | ＜5 | ||||||
Smoke density | ≤300 | ||||||
Model: The models currently produced by our company are 1kV, 10kV, 24kV, 35kV, all of which meet UL standards and meet the requirements of the ROHS directive
Mainly used for insulation and protection of bare busbar in high voltage control cabinet to replace the traditional flame retardant heat-shrinkable pipe
The specification, size and pressure and temperature rise of low smoke halogen series heat-shrinkable tubes refer to the corresponding low smoke and low halogen series heat-shrinkable tubes
