Introduction
Principle of thermal shrinkage
Under the high energy radiation, the linear polymer can form network cross-linked structure. The mechanical strength, temperature, chemical solution and ageing resistance of cross-linked polymer are greatly improved,especially the acid and alkali resistance.
Featuers
·Shrink ratio: 2:1
·Tracking resistant, low smoke emitting, high strength, flexible, flame retardant
·Min. shrink temperature: ≥84 °C
·Min. full recovery temperature: ≥120 °C
·Continuous operating temperature: -55~125 °C
·RoHS compliant
·Standard Package: Black, White, Red ,Yellow, Green ,Blue. More colors are available upon request.
Technical Performance
Structure
Dimensions(2:1)
 | Low Voltage thermal shrinkable busbar protective busing, a kind of continuous tube shape material made of radiation cross-linked polyolefin, carry excellent insulating performance. Typical applications include insulation of electrical bus bar rated up to 1KV or higher voltage ratings, rectangular, square and round bus bars, inline bolted connections of rectangular bus bars, copper or aluminum bus bars, metal-clad switchgear, metal-enclosed bus bar, substation switchgear etc. |
Principle of thermal shrinkage
Under the high energy radiation, the linear polymer can form network cross-linked structure. The mechanical strength, temperature, chemical solution and ageing resistance of cross-linked polymer are greatly improved,especially the acid and alkali resistance.
Featuers
·Shrink ratio: 2:1
·Tracking resistant, low smoke emitting, high strength, flexible, flame retardant
·Min. shrink temperature: ≥84 °C
·Min. full recovery temperature: ≥120 °C
·Continuous operating temperature: -55~125 °C
·RoHS compliant
·Standard Package: Black, White, Red ,Yellow, Green ,Blue. More colors are available upon request.
Technical Performance
| Property | Typical Data | Test Method |
| Tensile strength | ≥10.4MPa | ASTM D 2671 |
| Elongation at break | ≥200% | ASTM D 2671 |
| Tensile strength after heat ageing | ≥7.3MPa | 158ºC×168h |
| Elongation after heat ageing | ≥100% | 158ºC×168h |
| Longitudinal change | -5%~+5% | ASTM D 2671 |
| Flammability(Oxygen index) | VW-1 | ASTM D 2671 C |
| Heat Shock | No Tracks | 250ºC×4h |
| Dielectric Strength | ≥15kV/mm | ASTM D 149 |
| Dielectric Strength | ≥1014Ω.cm | IEC 60093 |
Structure
Dimensions(2:1)
| Size(mm) | As supplied D(mm) | After full recovered (mm) | Standard Package (M/Roll) | |
| Diameter d | Wall thickness w | |||
| Φ30.0/15.0 | 31.5±1.0 | ≤15.0 | 1.00±0.15 | 50 |
| Φ35.0/17.5 | 36.5±1.0 | ≤17.5 | 1.00±0.15 | 50 |
| Φ40.0/20.0 | 41.5±1.0 | ≤20.0 | 1.00±0.15 | 50 |
| Φ50.0/25.0 | ≥50 | ≤25.0 | 1.10±0.15 | 25 |
| Φ60.0/30.0 | ≥60 | ≤30.0 | 1.20±0.15 | 25 |
| Φ70.0/35.0 | ≥70 | ≤35.0 | 1.30±0.15 | 25 |
| Φ80.0/40.0 | ≥80 | ≤40.0 | 1.30±0.20 | 25 |
| Φ90.0/45.0 | ≥90 | ≤45.0 | 1.30±0.20 | 25 |
| Φ100/50.0 | ≥100 | ≤50.0 | 1.30±0.20 | 25 |
| Φ120/60.0 | ≥120 | ≤60.0 | 1.30±0.20 | 25 |
| Φ150/75.0 | ≥150 | ≤75.0 | 1.30±0.20 | 25 |
| Φ180/90.0 | ≥180 | ≤90.0 | 1.30±0.20 | 25 |
| Φ210/105.0 | ≥210 | ≤105.0 | 1.30±0.30 | 25 |
| Φ230/115.0 | ≥230 | ≤115.0 | 1.30±0.30 | 25 |
| Φ250/125.0 | ≥250 | ≤125.0 | 1.30±0.30 | 25 |
| Φ300/150.0 | ≥300 | ≤150.0 | 1.30±0.30 | 25 |