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The main characteristic of this coating material is the permanent visco-elastic behaviour. In other words it will stay in a high viscous fluid phase even after years of application. Due to this visco-elastic property, the system is able to self-healing small coating defects. Usually the basic raw material for a visco elastic coating is "PIB" . This is the acronym for polymerised isobutylen. PIB is amorphous and inert material, which has very little impact on the environment. It is therefore considered an environmentally friendly coating system. PIB also has very good anti-corrosion properties. This is because the adhesion between the substrate (iron) and the coating is very good.
It usually applied as a tape system, where PIB is placed on a backing layer, to make it easier to apply the coating on a substrate. Usually, PIB is used as a base layer directly placed on the substrate. On top of the PIB layer, another tape is used to protect agains mechanical and puncture impacts.
This PIB coating material is widely used by the coating in the field of the circumferential welds and bends or as a coating repair system at damaged coating. This coating system consists of 2 layers: The anti corrosive inner layer of polyisobutylen and a PVC based mechanical outer layer. PIB material is also used when smaller parts of a pipeline have to be coated for example where changes in the 'Right of Way' are necessary or in case of refurbishment of the external coating of pipeline sections.
corrosion-preventative wrap materials, which adhere extremely well to steel and factory or field-applied pipeline coatings. They are non-toxic, cold-applied, prefabricated wrap coatings based on the pure homopolymer, Polyisobutene, a low viscosity, non-crystalline, non-crosslinked (fully amorphous) compound.
WRAPPINGBAND CZH is a unique approach to solving corrosion problems in the long run.
WRAPPINGBAND CZH is a coating in a wrap form based upon synthetic a-polar polymers. The wrap makes it easy to apply with little preparation. The coating formulation gives no failures during overlap, coating the entire surface and creating an excellent corrosion barrier.
T120 VISCO ELASTIC TAPE is a cold-applied, non-cross linked, non-crystalline prefabricated monolithic viscous polymer wrap coating with cold flow, self-healing, visco-elastic properties.
T120 VISCO ELASTIC TAPE is a corrosion preventing, nontoxic wrap material adhering extremely well to steel and factory applied pipeline coatings like PE, PP and FBE.
T120 VISCO ELASTIC TAPE is a viscous liquid at the indicated operating temperatures and therefore flows into all irregularities of the substrate.
T120 VISCO ELASTIC TAPE is fully resistant to water and has a very low gas- and water vapour permeability.
| Item | Values | Test Method |
| Colour | Green | Naked eye |
| Thickness(mm) | ≥1.8 | ISO21809-3 |
| Dipping(>90ºC,48h) | No dipping | ISO21809-3 |
| Density | 1.0 g/cm3 | ASTM D792 |
| Glass Transition Temp. | < -20°C | ASTM D3418 |
| Impact Resistance | 15 J | ISO21809-3 |
| Indentation Resistance | 0.60 mm remaining | ISO21809-3 |
| Peel Strength | > 0.5 N/mm | ISO21809-3 |
| Lap Shear Strength | 0.02 N/mm2 | ISO21809-3 |
| Self Healing | < 24 hours @ 23°C | ISO21809-3 |
| Cathodic Disbondment Resistance | 0 mm | ISO21809-3 |
| Electrical Resistance | > 1015 ohm/cm | EN 12068 |
| Unwinding Test @ -30°C | No separation, tears or cracks | EN 12068 |
| Low Temp. Flexibility @ -30°C | No separation, tears or cracks | EN 12068 |
| Water Absorption | < 0.05% | ASTM D570 |
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