Heat Shrink Semi-Conductive Tube / Dual Wall Insulation Tubing

Heat Shrink Semi-Conductive Tube / Dual Wall Insulation Tubing
Heat Shrink Semi-Conductive Tube / Dual Wall Insulation Tubing
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This heat shrink tube is used to wrap cables up to 42kV. The semi-conductive tube is made of radiation crosslinked polyolefin. It has two walls, with the inner red wall supporting the outer one to have robust structure, while the outer one insulating electricity.

Technical Data

Inner Insulation Layer

Property Test Method Standard Value
Tensile Strength ASTM-D-638 ≥10MPa
Elongation at Break ASTM-D-638 ≥350%
Tensile Strength After Heat Aging (130℃×168h) ASTM-D-5510 ≤±20%
Elongation at Break After Heat Aging (130℃×168h) ASTM-D-5510 ≤±20%
Volume Resistivity IEC 60093 ≥1× Ω.cm
Dielectric Strength IEC 60243 ≥20kV (mm)
Dielectric Constant IEC 60250 ≤4
Brittle Temperature ISO 974 -40℃
Hardness (Shore A) ISO 868 ≥80
Heat Shock 160℃, 4h No Crack
Longitudinal Shrinkage ASTM-D-2671 ≤10%
Eccentricity ASTM-D-2671 ≤30%

Outer Semi-Conductive Layer

Property Test Method Standard Value
Tensile Strength ASTM-D-638 ≥10MPa
Elongation at Break ASTM-D-638 ≥350%
Tensile Strength After Heat Aging (130℃×168h) ASTM-D-5510 ≤±20%
Elongation at Break After Heat Aging (130℃×168h) ASTM-D-5510 ≤±20%
Volume Resistivity IEC 60093 ≤1× Ω.cm
Hardness (Shore A) ISO 868 ≥80
Heat Shock 160℃, 4h No Crack
Brittle Temperature ISO 974 -40℃
Longitudinal Shrinkage ASTM-D-2671 ≤10%
Eccentricity ASTM-D-2671 ≤30%
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