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.

Heat Shrink Semi-Conductive Tube / Dual Wall Insulation Tubing

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%