three-layer co extruded heat shrinkable tube

C106 semi conducting / insulated / rubber insulated three-layer co extruded heat shrinkable tube

Product features

Cross linked polyolefin material, thick wall heat shrinkable pipe Operating temperature: - 55 ~ 105 ºC

Three layer coextrusion heat shrinkable tube with high retraction stress Shrinkage temperature: 135-150 ºC

The inner rubber layer can expand and contract with the cable Voltage level: 6-36 kV

Eliminate partial discharge Halogen free and environmental protection; Products comply with RoHS

technical parameter

Product performance test method Test data

Inner rubber insulation

physical property tensile strength ASTM D2671 ≥6 MPa

elongation at break ASTM D2671 ≥400%

After aging (136 ºC / 168 hours) tensile strength ASTM D2671 ≥4.2 MPa

elongation at break ASTM D2671 ≥300%

Maximum service temperature IEC 216 105 ºC

Water absorption (23 ºC / 336 hours) ASTM D570 ≤0.5%

density ASTM D2671 0.95~1.05

Low temperature flexibility (- 55 ºC / 4h) ASTM D2671 No cracking

Hardness (Shore D) ASTM D2671 ≤ 30 HD

Electrical performance Breakdown strength (immersed in insulating oil) ASTM D 2671 ≥15kV/mm

Volume resistivity ASTM D 2671 ≥1.0 × 1014 Ω·cm

Intermediate insulating layer

physical property tensile strength ASTM D2671 ≥10.5 MPa

elongation at break ASTM D2671 ≥400%

After aging (136 ºC / 168 hours) tensile strength ASTM D2671 ≥10.5 MPa

elongation at break ASTM D2671 ≥350%

Maximum service temperature IEC 216 105 ºC

Water absorption (23 ºC / 336 hours) ASTM D570 ≤0.5%

density ASTM D2671 1.05~1.15

Low temperature flexibility (- 40 ºC / 4h) ASTM D2671 No cracking

Thermal shock (200 ºC / 30 minutes) ASTM D2671 No cracking

Hardness (Shore D) ASTM D2671 ≥ 48 HD

Electrical performance Breakdown strength (immersed in insulating oil) ASTM D 2671 ≥15kV/mm

Volume resistivity ASTM D 2671 ≥1.0 × 1013 Ω·cm

Outer semiconductive layer

physical property tensile strength ASTM D2671 ≥20 MPa

elongation at break ASTM D2671 ≥350%

After aging (158 ºC / 168 hours) tensile strength ASTM D2671 ≥16 MPa

elongation at break ASTM D2671 ≥300%

Maximum service temperature IEC 216 135 ºC

Water absorption (23 ºC / 336 hours) ASTM D570 ≤0.5%

density ASTM D2671 1.05~1.10

Thermal shock (250 ºC / 30 hours) ASTM D2671 No dripping or flowing; No cracking

Low temperature flexibility (- 40 ºC / 4h) ASTM D2671 No cracking

Hardness (Shore D) ASTM D2671 ≥ 55 HD

Electrical performance Volume resistivity ASTM D 2671 ≤1.0 × 104 Ω·cm

Inner rubber insulating layer & middle insulating layer & Outer Semiconducting Layer

Halogen free IEC 61249-2-21 CL: 900ppm max

Br: 900ppm max

Total (Cl + BR): 1500ppm max