Heat shrink self-extinguishing polyolefin sleeve “TTP135 Series” with shrinkage 2 ÷ 1
- Material: Polyolefin
- Shrinkage: 2:1
- Scope: cladding, wiring and insulation
- Continuous operating temperature: -55°C ÷ +135°C
- Self-extinguishing: according to Regulation UL224
- Standard Colors: Black, White, Red, Blue, Yellow
- Tensile strength: 13 N/mm2 according to ASTM D 638
- Elongation at break: 300% according to ASTM D 638
- Longitudinal variation: ± 5% according to ASTM D 2671
- Water absorption: 0.15% according to ASTM D 570
- Specific gravity: 1.45 according to ASTM D 792
- Minimum shrinkage temperature: > +90 °C
- Thermal shock (4 hours at 250°C): no damage, according to ASTM D 2671
- Elongation after heat aging test (168 hours at 150°C): 250% according to ASTM D 638
- Low flexibility temperature (–55 °C): no cracks, according to ASTM D 2671 C
- Mold resistance: good, according to Regulation MIL-DTL-7444
- Fluid resistance: good, according to Regulation MIL-DTL-23053/5
- Copper corrosion: none, according to ASTM D 2671B
- Volume resistivity: 10 14ohm.cm, according to ASTM D 257
- Dielectric strength: 20 kV/mm, according to ASTM D 2671
Heat shrink indication
- When shrinking the heat-shrink sleeve, use equipment made for this specific operation such as, for example, guns or hot air tunnels.
- Shrink the sleeve starting at one end, the most critical part, and then proceed slowly to the opposite end. This method avoids the formation of air bubbles between the inner wall of the heat shrink sleeve and the object it covers.
- In the event that the object to be covered is made of metal or a good heat conductor, it is advisable to preheat the object to avoid “cold areas”, so as to allow a perfect and soft adaptation of the heat-shrinking sleeve.
- In order to avoid overheating of the heat shrink sleeve, ensure there is regular heat distribution. Excessive overheating of the material during the shrinking process can cause bubbles, discoloration and in some cases even breakage of the heat-shrinking sleeve.
