Radiation Crosslinked Polyethylene Anticorrosion Heat Shrinkable Patch

Detailed introduction to Radiation Crosslinked Polyethylene Anticorrosion Heat Shrinkable Patch:

Radiation Crosslinked Polyethylene Anticorrosion Heat Shrinkable Patch
The product is lap joint, normally applied after the line welding.
1) Structural Description
 The on-site joint wrap tape is made of three layers, namely the inner layer is binary solvent free epoxy primer, the middle layer is hot-melt adhesive, the outer layer (backing material) is radiation cross linked PE. The two-layer tape bears no primer.2) Specification
Proper Pipe Diameter Backing Material Adhesive
≤ 400  ≥ 1.2  ≥ 0.8
> 400  ≥ 1.5  
3) Property and Advantages
 The product is heat shrinkable patch (normally named as lapping or open heat shrinkage patch) with shrinkable ≥15%m and a stator, which is usually applied to repair the large-scale damage or defect of the duct joint or anticorrosion layer.
Great Compatibility to the Pipe Coating
 The product is applied to the anticorrosion coating of all types of pipes such as:2PE, 3PE, 3PP, FBE, insulation jacket, coaltar enamel, and petroleum asphalt. It has been used widely in the joint anticorrosion works on the pipelining site with satisfactory effect, which has been proved in many pipeworks.
Strong Creep and Aging Resistance
 Used together with high quality hot-melt adhesive and primer, the product of our company is able to adapt to different kind of operating temperature , with strong creep resistance and a service life as long as that of the pipe.
Low Preheating Temperature
 Adoption of the new material and technology extends the application range of the product in on-site joint anticorrosion. Our company has solvent free epoxy primer of super adaptability which can be applied in coating the joint at the preheating temperature of 55Celsius-60Celsius. This enables the product to be used promptly with strong peeling strength, making the operation more convenient.
Constant Super Qualities and Property Ensured by New Material, New Craftsmanship, New Technology 
 Our company emphasizes application of high-tech, persisting in self-improving, adopting new material, new craftsmanship and new technology, which has ensured the constant good qualities and property of the product. When the fire moved around the tape to heat it( the flame should cover the stator), after fixing the stator on the tape, "bonding without adhesive" and new type stator, enable CEP-4 tape to ensure no creeping occurring at the lap joint of the end and head of the heat shrink tape, and the complete melting of the joint hot-melt adhesive(making the layer under the lapjoint namely the adhesive attached to the steel pipe soft and sticking so as to produce anticorrosion effect). This way the quality of the installment is greatly improved, meanwhile the bonding of the adhesive at the joint is further improved, which is obvious in a wide range of temperature. The shearing resistance is also strengthened. As a result, the anticorrosion quality at the pipe joint will be more reliable. Outstanding Waterproof Sealing
 Composed of hot-melt adhesive, radiation cross linked PE and solventliss epoxy primer, the product has excellent property of anticorrosion, quick contraction, sealing, waterproof, acid proof, and chemical corrosion resistance.Strong Adaptability on Site
 Our company is able to provide reeled heat shrinkable tape for pipe works of different pipe diameter. The tape can be cut at will according to the diameter of the pipe, which helps a lot in reducing the inventory cost and the input cost of the work and thus conveniencing the engineering management.
Primer Packaging
 In order to make the site operation more convenient, our company has offered matching packaging for the epoxy primer to ensure the quality of the operation.
4)Performance Index
No.  Item  Performance  TestProcedure  Name
1  Tensile Strength (Mpa)  ≥ 17  GB/T 1040  Backing Material Property
2  Elongation (%)  ≥ 400  GB/T 1040  
3  Vicat Softening Point ( Celsius)  ≥ 90  GB/T 1633  
4  Brittle Temperature ( Celsius)  ≤ -65  GB/T 5470  
5  Electric Strength (MV/m)  ≥ 25  GB/T 1408.1  
6  Volume Resistivity ( Ω .m)  ≥ 1×10 GB/T 1410  
7  Environment Stress Cracking Resistance (F50)(h)  ≥ 1000  GB/T 1842  
8  Chemical Mediator Corrosion Resistance (Steeping 7d)(%)  10%HCL  ≥ 85  GB/T 1040  
  10%NaOH  ≥ 85   
  10%NaCL  ≥ 85  
9  Thermal Antioxidation (150 Celsius ,168h)  Tensile Strength (Mpa)  ≥ 14  GB/T 1040  
  Elongation (%)  ≥ 300   
10  Adhesive Softening Point(Ring and Ball Test) ( Celsius)  ≥ 90  GB/T 1633-79  Contraction Sleeve ( Tape )
11  Lap Shear Strength (23 Celsius) (Mpa)  ≥ 1.0  GB/T 2792-81  
12  Brittle Temperature ( Celsius)  ≤ -15  GB/T 5470-85  
13  Peel Strength
(Cohesive Failure) (N/cm)  Contraction Sleeve ( Tape ) / Steel  ≥ 70  GB/T 2792  
  Contraction Sleeve ( Tape )/ Epoxy Primer ≥ 70   
  Contraction Sleeve ( Tape )/ PE layer ≥ 70