I produced the " radiation cross-linked polyethylene heat shrinkable tape " is a high-energy particle radiation treatment by polyethylene materials , the appearance of the strip , the inner composite special hot melt adhesive , this type of cross-linked polyethylene materials with shape, size of the "memory effect" when re-heated naturally reply. When it is quickly heated to a temperature of 125 ℃ , it will produce radial contraction , while the inner layer of hot-melt adhesive melts , so shrinking band in the radial confining force contraction premise and metal surfaces and jackets firmly bonded together , and thus play a role in sealing corrosion .
After the experts found that " radiation cross-linked polyethylene heat shrinkable polyolefin band compared with ordinary materials with high mechanical strength, heat aging resistance , chemical resistance , resistance to environmental stress cracking resistance and UV resistance and other characteristics. have a longer service life.
The product is mainly used for oil, chemical , construction, marine and other buried steel corrosion management mending . The product is easy construction, bonding firm , good sealing performance , greatly improving the overall life of the pipeline .
2 " radiation cross-linked polyethylene heat shrinkable band" Dimensions and tolerances :
Table 1 Unit : mm
Name of Product Width tolerance Thickness tolerance
Shrink with 300 ± 10 1.6 +0.1
Shrink with 420 ± 10 1.6 +0.1
Shrink with 500 ± 10 2.0 +0.1
Shrink with 600 ± 10 1.6 +0.1
"Radiation cross-linked polyethylene heat shrinkable band" Dimensions and tolerances :
Table 2 Unit: mm
Name of Product Width tolerance Thickness tolerance
Shrink with 480 ± 10 1.8 +0.1
Shrink with 570 ± 10 3.0 +0.1
Note: Users can not meet the above specifications and design requirements can be processed according to user needs and matching .
(3) performance indicators:
Name Unit Test results testing standards
Heat shrinkable tape peel strength ( for PE) N / cm 66 GB/T2792-81
Heat shrinkable tape base film thickness mm 1.28 GB/T6672-86
Shrink with tensile strength Mpa 19.6 GB/T1040-92
Heat shrinkable tape Elongation % 625 GB/T1040-92
Shrink with Vicat softening point. C 96 GB/T1633-79
Embrittlement temperature heat shrinkable tape . C <-65 GB/T5470-85
Shrink with electrical strength MV / m 39.4 GB/T1408-89