SICHUAN FOREVER RADIATION TECHNOLOGY CO.,LTD
Heat Shrinkable Sleeves For Pipeline Joint Coating
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Heat-shrinkable materials are composed of an external backing that is made from extruded and cross-linked polyolefin, and an internal adhesive that is made from thermoplastic materials. The shrinkage of the backing causes circumferential compression in the coating. This compression supplements the bonding of the sleeve to the surface of the pipe joints.
The heat-shrinkable sleeves are a type of field-joint coating system. They are known for being one of the toughest coating systems available for field application. The coating system consists of high-performance epoxy that is solvent-free, an adhesive base copolymer, and modified cross-linked polyethylene. This design is meant to mimic the structure and function of military-applied three-layer PE coatings.
The coatings used in this system are compatible with all commonly used pipe coatings, such as polyethylene, coal tar enamel, and fusion-bonded epoxy.
Heat-shrinkable materials are composed of an external backing that is made from extruded and cross-linked polyolefin, and an internal adhesive that is made from thermoplastic materials. The shrinkage of the backing causes circumferential compression in the coating. This compression supplements the bonding of the sleeve to the surface of the pipe joints.
The heat-shrinkable sleeves are a type of field-joint coating system. They are known for being one of the toughest coating systems available for field application. The coating system consists of high-performance epoxy that is solvent-free, an adhesive base copolymer, and modified cross-linked polyethylene. This design is meant to mimic the structure and function of military-applied three-layer PE coatings.
The coatings used in this system are compatible with all commonly used pipe coatings, such as polyethylene, coal tar enamel, and fusion-bonded epoxy.
An exceptional multi-functional adhesive is now available for use in installations that require lower pre-heat temperatures. This adhesive is also capable of bonding to a variety of surfaces, including 3LPE, DFBE, FBE, and CTE.
Furthermore, it provides full resistance to shear forces caused by soil and thermal movements. Thus, it is an ideal solution for projects where conditions are unpredictable and subject to changes over time.
But that's not all. The adhesive also boasts superior cathodic disbondment, hot water immersion resistance, and thermal aging resistance. This makes it an excellent option for long-term protection against corrosion, offering an optimum barrier against the corrosive effects of time and wear.
Lastly, the adhesive's versatility and superior performance lead to a reduction in both time and cost. Lower pre-heat temperatures and wet epoxy primer application also lead to more efficient installation and reduced downtime.
For more detailed instructions, please refer to the "Instructions for Use" manual provided.
Before application, it is important to mix the two components of the epoxy primer thoroughly to ensure even coverage. The thickness of the primer applied should be a minimum of 150 µm and must cover at least 10 mm of the adjacent coating.
To avoid wastage, it is recommended to only mix the amount of primer that can be applied during the pot life.
While the epoxy is still wet, apply the sleeve and ensure that the adhesive has been heated before application. Wrap the entire sleeve around the joint and apply the closure patch after heating it.
Post heating is important to ensure that the sleeve is securely attached to the joint and to remove any trapped air.
Our heat shrinkable insulation tape is manufactured in China and comes with certifications such as COO, SGS REPORT, and ISO MANAGER SYSTEM CERTIFICATES. The minimum order quantity is 100 sets, and packaging details vary depending on the pipe diameter, with each box having different packing. Delivery time is 7-14 days, and we accept payment terms of T/T. Our supply ability is 1000 sets per day, ensuring timely delivery of your customized order.
Technical Data Sheet for 2PE heat shrinkable tape base on ISO 21809-3 14A
| Property | Test temp. | Unit | HST 60 Tmax 65 °C | HST 80 Tmax 85 °C | Test method |
| Tensile Strength | 23 °C | MPA | ≥23 | ≥23 | ASTM D-638 |
| Elongation at Break | 23 °C | % | ≥500 | ≥500 | ASTM D-638 |
| Hardness, Shore D | 23 °C | D | ≥52 | ≥52 | ASTM D-2240 |
| Dielectric Strength | 23 °C | Kv/mm | ≥32 | ≥32 | ASTM D-149 |
| Water Absorption | 23 °C | % | ≤0.1 | ≤0.1 | ASTM D-570 |
| Volume Resistivity | 23 °C | ohm.cm | ≥1.0X1018 | ≥1.0X1018 | ASTM D-257 |
| Thickness | — | mm | ≥2.0 | ≥2.0 | ISO 21809-3 Annex B |
| Width | - | mm | 100 mm to 800 mm | ASTM D 1000 | |
| Ring ball Softening Point for Adhesive | 23 °C | °C | ≥90 | ≥121 | ASTM E-28 |
| Holiday detection at 5 KV/ mm + 5 KV | — | — | No holiday | No holiday | ISO 21809-3 Annex C |
| Impact resistance (holiday detection at 5 KV/mm + 5 KV) | 23 °C | J/mm | ≥5 | ≥7 | ISO 21809-3 Annex D |
|
Indentation resistance: Pres- sure and residual thickness | 23 °C | N/mm2 | ≥1.0 | ≥10.0 |
ISO 21809-3 Annex E |
| mm | ≥0.60 | ≥1.0 | |||
| Tmax | N/mm2 | ≥1,0 | ≥1,0 | ||
| mm | ≥0,60 | ≥1,0 | |||
| Cathodic disbondment at 28 days | 23 °C | mm | ≤10 | ≤15 | ISO 21809-3 Annex G |
| Tmax | mm | ≤20 | ≤20 | — | |
| Peel strength to pipe surface and plant applied coating | 23 °C | N/mm | ≥1.0 | ≥3.0 | ISO 21809-3 Annex H |
| Tmax | N/mm | ≥0.10 | ≥0.20 | ISO 21809-3 Annex H | |
| Peel strength to pipe surface and plant applied coating after 100-day hot-water immersion test at Tmax limited |
23 °C |
P100/P0 |
≥0.75 |
≥0.75 |
|
| Lap shear strength at 10 mm/ min | 23 °C | N/mm2 | ≥0.10 | ≥5.0 | ISO 21809-3 Annex J |
| Tmax | N/mm2 | ≥0.01 | ≥0.10 | ||
| Thermal ageing resistance (aged at Tmax + 20 °C) |
ISO 21809-3 Annex M | ||||
| Elongation at break E100/E0 E100/E70 |
≥0.75 ≥0.80 |
≥0.75 ≥0.80 | |||
| Peel strength to pipe surface P100/P0 P100/P70 |
23 °C |
- |
≥0.75 ≥0.80 |
≥0.75 ≥0.80 | |
SICHUAN FOREVER COMPANY SUPPLY HEAT SHRINKABLE TAPE, HEAT SHRINKABLE SLEEVES, 2PE MASTIC SHRINK SLEEVE,CLOSURE PATCH, REPAIR PATCH, FILLER TAPE ,EPOXY PRIMER AND SO ON.