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  • Medium Voltage Semi-conductive Outer Shielding Material

Medium Voltage Semi-conductive Outer Shielding Material

0835 Cross-linkable Semi-conductive Outer Shielding Compound

1. Description

0835 cross-linkable semi-conductive shielding compound is used as strippable insulation shield for cross-linked polyethylene

insulation power cable rated voltage up to 35KV. It’s suitable for high temperature vulcanization processing method. 0835

provides excellence processability, fine surface smoothness, stable volume resistivity, low pre-cure or scorch characteristic,

lower stripping force with anti-tearing property, leaving clean surface for insulation after stripped.

2. Packing

In Cardboard Box with inner PE bag, 600kg/box.

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3. Technical Parameter

Property

Test Method

Unit

Value

Density at 23°C

ASTM D 1505

g/ cm3

≤ 1.13

Tensile Strength (200 mm/min)

Tensile Strength Retention

(Heat Aging at 135°C after 168h)

ASTM D 638

MPA

%

≥ 13

85

Elongation at Break before ageing

Elongation Retention

(Heat Aging at 135°C after 168h)

ASTM D 638

%

%

280

85

Volume Resistivity at 20°C

Volume Resistivity at 90°C

ASTM-D991

W.cm

W.cm

60

≤ 600

Hot Set Test Conditions

At 200 ±2 °C x 0.2 MPa for 15 min

IEC 540-14

Elongation after loading

Permanent Deformation

%

%

≤ 60

≤ 2

Moisture Content

KARL FISCHER

ppm

≤ 500

Brittleness Temperature

ASTM-D746

-40°C

Stripping Force

Q/TNYM 1-2012

N/cm

15

4. Processing Conditions

The recommended standard extrusion temperature profiles are as followings: Unit: °C

Zone

Zone 1

Zone 2

Zone 3

Zone 4

Flange

Tube

Screw

Temperature Range°C

80-85

90-95

100-105

105-110

105

105

50-55

We suggest using double layer filter mesh with size 40 mesh (350μm).

We recommend hopper drying at 40~60'C for 4 hours to remove moisture before extrusion.

5. Storage

Should be stored at room temperatures between 10~30°C. Recommended maximum storage period in dry and clean are is

12 months unopened and in original packaging after the manufacture.


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