SICHUAN FOREVER RADIATION TECHNOLOGY CO.,LTD
Heat Shrinkable Sleeves For Pipeline Joint Coating
Add to Cart
Heat-shrinkable materials are composed of an external backing that is made of cross-linked polyolefin and is extruded, and an internal adhesive that is made of thermoplastic materials. These materials undergo shrinkage upon heating, which instils a level of circumferential compression in the coating. This compression supplements the bonding of the sleeve to the pipe joint surfaces.
Heat-shrinkable sleeves are among the toughest filed-applied coating systems that are currently available. The coating system is comprised of a solvent-free, high-performance epoxy, an adhesive base copolymer, and modified cross-linked polyethylene. Its design is intended to replicate the structure and performance of mil-applied three-layer PE coatings. Furthermore, the coatings are compatible with all commonly used pipe coatings, including polyethylene, coal tar enamel, and fusion-bonded epoxy.
This adhesive is truly excellent and highly multi-functional. It is capable of enabling lower installation temperatures in comparison to other similar products. Additionally, it can bond to a range of materials including 3LPE, DFBE, FBE, and CTE.
Another great feature of this adhesive is its full resistance to shear forces that are induced by soil as well as thermal movements, which makes it a perfect choice for a range of applications.
The adhesive is also superior when it comes to cathodic disbondment and resistance to hot water immersion and thermal ageing. Because of these features, it offers the ultimate barrier against corrosion and provides long-term protection.
Lastly, this product is a great choice due to its ability to help reduce both time and cost. By enabling lower pre-heat temperatures and providing the option for wet epoxy primer application, this adhesive can lead to significant savings without sacrificing quality.
| Product properties | ||
| Property | Test Method | Typical Value HT 60 |
| Radiation crosslinking PE Backing | ||
| Tensile strength | ASTM D 638 | 3200psi (22MPa) |
| Elongation | ASTM D 638 | 550% |
| Thermal ageing 1) 150°C 21d elongation 2) Tmax +20°C 100d E100/E70 | ASTM D 638 EN 12068 | 420% 1.08 |
| Hardness, Shore D | ASTM D 2240 | 52 |
| Shrink force | ASTM D 638, 150°C (302°F) | 43psi |
| Dielectric strength at 23°C | ASTMD 149 | 825volts/(33KV/mm) |
| Moisture absorption | ASTM D 570 | 0.05% |
| Hot Melt Adhesive | ||
| Softening point | ASTM E 28 | 105°C (221°F) |
| Lap shear
| ASTM D 1002 EN 12068, @ 10 mm (0.40")/min. | 196psi (1.35N/mm2) @23°C (73°F) 37 psi (0.25N/mm2) @65°C (149°F) |
| Installed Sleeve | ||
| Peel to primer @23°C @Tmax | ASTM D 1000
| 130N/cm 25N/cm
|
| Cathodic disbandment | ASTM G 42, 30 days EN12068 Class C @23°C @80° | 8mm @ 65°C (149°F) 6mm 8mm |
| Hot water immersion | ASTM D 870, 120 days @Tmax | no delamination no blisters or water ingress |
| Resistance to thermal ageing (100d/100°C) Peel strength layer to layer P100/PT Peel strength to pipe surface P100/PT | EN 12068, Class C 80 |
3.6 3.8 |
| Low temperature flexibility | ASTM D 2671-C | -25°C (-13°F) |
| Impact resistance | ASTM G 14 EN 12068, class C | 66 in-lbs >15J no holiday |
| Penetration resistance | ASTM G 17, EN 12068, Class C | no holidays @10KV >0.6mm @ 65°C (149°F |
| Holiday detection at 5 kV/ mm + 5 kV | EN 12068 ,Class C | no holiday |
For additional information, please refer to the instructions for use provided.
The two components of the epoxy primer should be mixed carefully to ensure proper mixing before application. It is recommended to apply the primer to a minimum thickness of 150 µm, covering at least 10 mm of adjacent coating. It is important to avoid mixing more primer than what can be applied during the pot life.
While the epoxy is still wet, apply the sleeve after heating the adhesive. After the sleeve is wrapped, apply the closure patch after heating it. Finally, the entire sleeve should be heat-shrunk to fit snugly around the joint.
Post heating is used to soften the sleeve and remove any trapped air.
Our Heat Shrinkable Tape product forms come in pieces of rolls, with width options of 300mm, 450mm, 500mm, and 600mm. Our tape meets international standards such as ASTMD 638, ASTM D 2240, ASTM D 149, ASTM D 570, ASTM D 1000, ASTM D 870, ASTM D 2671, ASTM E 28, ASTM G 14, EN 12068, and ISO 21809-3.
Our Heat Shrinkable Tape can be used for heat shrink wrapping, hot melt tape for heat shrinkable tubing, and heat shrinkable sleeve for pipeline. Contact us today to learn more about how we can customize our product to meet your needs.