EPDM insulating rubber compound

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3000 Tons kg/month

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Product Description:

EPDM insulating rubber compound

I.     Type and application

Type

Product

Application

XJ-50A

110 Insulating rubber compound.EVA

Heat  resistant insulating rubber compound for cables and wires,EVA

XJ-30A

90 Insulating rubber compound

Heat  resistant insulating rubber compound for cables and wires

XJ-30B

90 Insulating rubber compound

Heat  resistant insulating rubber compound for 0.6/1KV cables and wires

XJ-30F

90Irradiation cross-linkable  insulating EPDM rubber compound

Heat  resistant EPDM insulating compound which processing in plastic extruder.

XJ-60A

125 Insulating rubber compound

Heat resistant  insulating rubber compound for maximum 1KV cables and wires

II.   Product description

EPDMinsulating rubber compound, based on EPDM rubber, is mixed with variousadditives, and is elaborated in the extra-clean conditions. It has varioustemp. grades. The compound has outstanding performances of vulcanization, processing, physical,mechanical, aging and electrical properties. The compound is complied withQ/320585JSDT058-2003 standard.

III.  Processing

Type

Processing Equipment

Compression ratio

L/D

Processing temp.

Recommended vulcanize  temp.

XJ-50A

XJ-30A

XJ-30B

XJ-60A

Common  rubber extruder

1.111.51

151201

60110

160-200℃

XJ-30F

Common rubber extruder

1.111.51

201251

110180

15-20 megarad irradiation dosage

IV.   Maximum useful shelf life

12 monthsat 20℃, 6months at 30℃.

V.     Properties

Table

Item

XJ-50A

XJ-30A

XJ-30B

XJ-30F

XJ-60A

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Tensile Strength N/mm2

≥6.5

12.0

≥4.2

6.5

≥8.5

11.0

≥4.2

9.6

≥8.5

12.2

Elongation at Break %

≥200

280

≥200

280

≥200

400

≥200

350

≥200

450

Oven  aging  135℃240h

150240h

135168h

135168h

135168h

158168h

Variation on Tensile Strength %

≤±30

+5

±30

-10.8

±30

+5

±30

+5

±30

+9.5

Variation on Elongation at Break   %

≤±30

-6

±30

-10.7

±30

-11

±30

-9.5

±30

-8.0

Dielectric Strength MV/m

≥25

26

≥25

28

≥25

28

≥25

27

≥25

30

Air bomb aging test  127℃40h

Tensile Strength N/mm2

≥6.0

11.3

≥6.0

6.0

Variation  %

-6

±30

-8.3

±30

-8

±30

-4

±30

-6

Elongation at Break %

240

270

Variation  %

≤-30

-15

±30

-3.6

±30

-6

±30

-5

±30

+3

Hot Prolongation  250℃

15min20N/cm

15min20N/cm

15min20N/cm

15min20N/cm

15min20N/cm

Elongation Under Load %

≤100

60

≤175

60

≤175

60

≤175

70

≤175

50

Permanent Elongation after cooling   %

≤25

10

≤15

10

≤15

10

≤15

10

≤15

10

Volume Resistivity at 20Ωm

≥1.0×1010

2.5×1012

≥1.0×1010

1.2×1012

≥1.0×1010

1.5×1013

≥1.0×1010

8.5×1012

≥1.0×1010

2.0×1013

Elastic Modulus

At 150% ElongationN/mm2

≥4.5

5.5

≥4.5

6.5

At 50% Elongation N/mm2

≤7.5

6.1

≤7.5

5.0

Capacitance variation after water immersion  50±2℃

Between one day and seven days   %

≤15

10

≤15

8

Between seven days and fourteen days %

≤5

2

≤5

2

Hardness IRHD

≥80

80

≥80

80

Ozone Resistance and Ozone Concentration

0.025-0.030%30h

2-3.33PPM

0.025-0.030%30h

2-3.33PPM

Surface Variation

Non cracking

Non cracking

Non cracking

Pass

Non cracking

Non cracking

Non cracking

Pass

Heat Pressing Deformation  150℃0.5h

Pressing Depth   %

≤50

25


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