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Compound A2-I
Radiation crosslinkable compound for very flexible, commercial, non
flame retarded
general purpose thin wall heat-shrinkable tubing
Compound properties
Compound A2-I is radiation crosslinkable low cost, flexible compound,
designed for the manufacturing of thin wall non-flame-retarded heat-shrinkable
tubing for commercial purposes where flame-retardancy is not required.
The compound can be easily colored by adding standard color masterbatches
based on PE or EVA.
Compound characteristics
| Color |
|
Natural |
| Specific gravity |
ASTM D 792 |
1.25 |
| Water absorption |
ASTM D 570 |
0.2% |
| MFI (160C, 21.6kg) |
ASTM D 1238 |
10 |
Extrusion
| Recommended extrusion temperature profile |
125șC - 130șC - 135șC - 140șC |
| Recommended draw-down ratio |
1.10 : 1 |
Crosslinking
| Recommended dose |
60 - 100kGY |
| Hot-set elongation |
80 - 120% (200C ; 20 gr/mm2) |
Packaging
The PTL compound A2-I is packed in PE bags of 25 kg. A shelf life of 12
months can be achieved if stored stored below 30șC.
Tubing properties
Heat-shrinkable tubing made of this compound will show a continuous operating
temperature of 125șC. The excellent heat-ageing properties allows the
product to withstand 175șC for short periods. The tubing will shrink at
temperatures above 90șC.
Tubing made of this non-blooming compound show excellent printability
properties and are halogen- and cadmium free.
Technical values
| Property |
Test Method |
Typical value |
| |
| Physical |
| Tensile strenght at break |
ASTM D 638 |
14 MPa |
| Elongation at break |
ASTM D 638 |
400% |
| |
| Thermal |
| Continuous operating temperature |
|
-55șC to +125șC |
| Minimum shrink temperature |
|
90șC |
| Heat shock (4hrs @ 250șC) |
ASTM D 2671 |
No cracking, dripping, flowing |
| Heat ageing (168hrs @ 150șC) |
ASTM D 638 |
Elongation 300% |
| Low temp. flexibility (-55șC) |
ASTM D 2671C |
No cracking |
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| Chemical |
| Fungus resistance |
MIL-DTL-7444 |
Inert |
| Fluid resistance |
MIL-DTL-23053/5 |
Good |
| Copper Corrosion |
ASTM D 2671 B |
No corrosion |
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| Electrical |
| Dielectric strength |
ASTM D 2671 |
20 kV/mm |
| Volume resistivity |
ASTM D 257 |
10 @ 14 ohm.cm |
International specifications
- FMVSS 302
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