Polyolefin
Shrinkable
U-bolt
| Sr. No | Test Description | Standard Used | Acceptance Criteria | Recorded Value |
|---|---|---|---|---|
| 1 | Tensile Strength | ASTM D638 | 11N/mm2 (Mpa) (Min) |
11N/mm2 (Mpa) (Min) |
| 2 | Ultimate Elongation | ASTM D638 | 350% (Min) |
359% (Min) |
| 3 | Longitudinal Change | ASTM D2671 | -10% (Max) |
5% (Max) |
| 4 | Hardness | ASTM D2240 | 45 ±10 Shore D | 41 Shore D |
| 5 | Water Absorption | ASTM D570 | 0.5% (Max) |
0.11% (Max) |
| 6 | Split Test | Direct flame | ||
Internal method |
40 Sec. on 85% Mandril Diameter |
No Split-Pass |
||
| Oven | ||||
| UL224 | 30 Min. on Mandril | No Split-Pass | ||
| 7 | Accelerated Ageing | ASTM D2671 | 1200 C for 500 hrs | 1200 C for 500 hrs |
| a | Tensile Strength | ASTM D638 | 11N/mm2 (Mpa) (Min) |
11.61N/mm2 (Mpa) (Min) |
| b | Ultimate Elongation | ASTM D638 | 300% (Min) |
310% (Min) |
| 8 | Low Temperature Flexibility (-40oC for 4 hrs) |
ASTM D2671 | No cracking | No cracking |
| 9 | Heat Shock (250 o C for 30 min.) |
ESI 09-11 | No cracking or flowing | No cracking or flowing |
| 10 | Shrink Temperature | IEC216 | 125 oC | 125 oC |
| 11 | Continuous Temperature Limit | IEC216 | -40to +110 oC | -40to +110 oC |
| 12 | Dielectric Strength | ASTM D149 | 12 KV/mm (Min) |
12 KV/mm (Min) |
| 13 | Volume Resistivity | ASTM D257 | 1 Xl 0 14 Ohm.cm (Min) |
3.2 Xl 0 14 Ohm.cm (Min) |
| 14 | Dielectric Constant | ASTM D150 | 5 (Max) |
4 (Max) |