Radiation Crosslinked PE Waterproof Heat Shrinkable Cap
 Water-proof Cap which is also called Heat Shrinkable Cap is the combination of hot-melt adhesive and the backing material of radiation crosslinked PE.
I Function: It is mainly applied to the ends of the duct with foam jacket, connecting the internal jacket with the external jacket of the steel pipe, producing sealing, waterproof, anticorrosion protection against damage.
II Characteristics
1) It is convenient and efficient in application.
 2) The hot-melt adhesive binds well with other anticorrosion layers, which enables it to be waterproof and airproof, and have natural–repair ability.
 3) The product performs well in mechanical strength, temperature resistance, thermal antioxidation, anticorrosion, and environment stress cracking resistance, therefore has a long service life.
 4) It can also protect long-distance heat insulating material from damage and decay, so as to reduce heat loss, cost of repair and maintenance.
III Performance Index
 1) Specification: 38-800pipe diameter (which can be manufactured as the customer desired).
 2) Performance Index
 
Serial No. Item Unit Technical Criteria Test Method
1 Tensile Strength Mpa ＞17 GB/T1040
2 Elongation % ＞400 GB/T1040
3 Vicat Softening Point ℃ ＞90 GB/T1633
4 Brittle Temperature ℃ ＜-65 GB/T5470
5 Environment Stress Cracking Resistance Time（F50） (h) ＞1000 GB/T1842
6 Electrical Breakdown Strength Resistance MV/m ＞25 GB/T1408
7 Volume Resistivity Ω.m ＞1×10 GB/T1410
8 Chemical Mediator Corrosion Resistance (Steeping 7d) 10% HCL % ＞85 SY/T0413
  10%NaOH % ＞85 SY/T0413
  3%Nacl % ＞85 SY/T0413
9 Tensile Strength Mpa ＞14 GB/T1040
10 Elongation % ＞30 GB/T1040
11 Peel Strength N/cm To Primer-coated Steel Pipe N/cm ＞35 GB/T2792
  To PE layer N/cm ＞35 GB/T2792
IV Transportation and Storage
 The product should be packed with carton or woven bag, and kept away from strong pressure, insolation, rain, or harmful material such as grease and dissolvent. It has a storage period of18 moths provided it be stored in the cool and dry place, away from heat at the temperature of -1--35℃.