EPDM Insulating rubber compound for medium voltage cable

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Product Description:

EPDM Insulating rubber compound for medium voltage cable

I.     Type and application

Type

Product

Application

XJ-34A

90 Insulation rubber compound for medium  voltage cable

Insulating  rubber compound for  630KV  flexible medium voltage cable

XJ-34B

90 Insulation rubber compound for  medium  voltage cable

Insulating  rubber compound for 6/10KV medium voltage cable

XJ-34C

90 Insulation rubber compound for  medium  voltage cable

Insulating  rubber compound for 8.7/15KV medium voltage cable

XJ-34D

90 Insulation rubber compound for  medium  voltage cable

Insulating  rubber compound for 10/20KV medium voltage cable

XJ-34E

90 Insulation rubber compound for  medium  voltage cable

Insulating  rubber compound for 26/35KV medium voltage cable

II.   Product description

XJseries  insulating rubber compound formedium voltage cable, based on EPDM rubber, is mixed with various additives,and is elaborated in the extra-clean conditions. Voltage grade of cable is from6kV to 30kV. The compound has outstanding performances of vulcanization, processing, physical,mechanical, aging and electrical properties. The compound is complied withQ/320585JSDT058-2003 standard.

III.  Processing

Processing Equipment

Compression ratio

L/D

Processing temp.

Recommended vulcanize temp.

Common rubber extruder

1.111.51

151201

60110

160-200℃

IV.   Maximum useful shelf life

12 months at 20℃, 6 months at 30℃.


V.     Properties

Table

Item

XJ-34 A

XJ-34B

XJ-34C

XJ-34D

XJ-34E

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Tensile Strength N/mm2

≥7.0

10.9

≥8.5

11.0

≥8.5

9.4

≥8.5

11.5

≥8.5

11.0

Elongation at Break %

≥300

430

≥200

400

≥200

280

≥200

410

≥200

400

Oven aging

135168h

135168h

135168h

135168h

135168h

Variation on Tensile Strength  %

±15

+14

±30

+11

±30

+6.5

±30

+10.5

±30

+11

Variation on Elongation at Break %

±15

-3

±30

-4

±30

-7

±30

-8.5

±30

-7

Dielectric Loss Angular Tangent value

≤0.003

0.0019

≤0.003

0.0026

≤0.003

0.0025

≤0.003

0.0024

≤0.003

0.0020

Dielectric Constant  ε

≤2.8

2.60

≤2.8

2.65

≤2.8

2.64

≤2.8

2.62

≤2.8

2.60

Dielectric Strength MV/m

≥25

31.9

≥25

30

≥25

30

≥25

30

≥25

32

Air  bomb aging test  127℃40h

Tensile Strength  N/mm2

10.0

Variation    %

±15

-5

±30

-5

±30

-5

±30

-4

±30

-4

Elongation at Break  %

420

Variation     %

±15

-3

±30

-3

±30

-2

±30

0

±30

0

Hot Prolongation  15min20N/cm

250

250

250

250

250

Elongation Under Load %

≤100

25

≤175

50

≤175

50

≤175

50

≤175

50

Permanent Elongation after cooling  %

≤10

1

≤15

0

≤15

0

≤15

0

≤15

0

Volume Resistivity at20Ωm

1.0×1014

2.6×1014

1.0×1012

7.2×1013

1.0×1012

7.0×1013

1.0×1012

1.5×1014

1.0×1012

5.2×1014

Volume Resistivity at90Ωm

1

Elastic Modulus

At 150% Elongation /mm2

≥4.5

6.0

≥4.5

6.1

≥4.5

6.2

≥4.5

7.2

At 50% Elongation N/mm2

≤7.5

5.1

≤7.5

5.0

≤7.5

5.2

≤7.5

6.1

Capacitance variation after water  immersion  50±2℃

Between one day and seven days  %

≤15

6

≤15

5

≤15

5

≤15

5

Between seven days and fourteen days  %

≤5

1

≤5

1

≤5

1

≤5

1

Ozone Resistance

Ozone Concentration  2-3.33PPM

Surface Variation

Non cracking

Pass

Non cracking

Pass

Non cracking

Pass

Non cracking

Pass

Non cracking

Pass

Hardness IRHD

--

68

≥80

80

≥80

80

≥80

80

≥80

80

Density

--

1.21


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Q:Are there several labels for edible plastics?
Plastic film, plastic film, plastic film don't wrapped on the surface of food into the microwave oven use: heat resistance is not strong, usually, PE film qualified will appear in the case of the phenomenon of hot melt at the temperature above 110 DEG C, will leave some body decomposition plastic formulations. And wrap the food with plastic wrap to heat it. The grease in the food easily dissolves the harmful substances in the preservative film. Therefore, the food into the microwave oven, it is necessary to remove the wrapped plastic wrap.
Q:What is the pungent smell of plastic products?
Materials are many. They may be polyethylene, polypropylene, polyvinyl chloride, and so long as they are insoluble in water, they can be used as hoses. Some polymer itself has a flavor, but it should not be pungent, but also may be that I said before impurities. I can't give a positive answer. But one thing is for sure, the impurities in polymer materials are almost impossible to remove
Q:How do you clean the scotch tape on the plastic?
After a wet rag pour gasoline or loose perfume can be wiped off, a piece of cloth wet then pour some gasoline or loose perfume can also scrub transparent plastic adhesive tape, because they are chemical substances on the inside, when cleaning plastic transparent tape adhesive very quickly, but not on their hands.
Q:How do you dye plastics?
This method is basically the same as the extrusion dyeing method. The difference is that the proportion of the dye in the plastic is 10 times higher than that of the usual one. It can be used more frequently when the plastic is injected
Q:What if the plastic is broken?
The adhesive is bonded between the two bonding surfaces and is coated with suitable adhesive to form a layer of glue. The two parts are bonded together by the action of the adhesive layer. It is the only adhesive method for thermosetting plastics
Q:What does "stress hardening" of plastic molding mean?
The plastic molding is various forms (such as powder, granules, solution and dispersion) of plastic products or parts required for the shape of.
Q:How about a bottle of water?
General plastic bottles can only be installed cold water, such as hot water used, it will increase the risk of harm, it is recommended not to use plastic bottles for a long time to drink water.
Q:What happens when plastic gets wet and sticky?
The plastic is made of monomers as raw materials, polymer by polyaddition or polycondensation polymerization, can freely change the composition and form style, composed of synthetic resin and filler, plasticizer, stabilizer, lubricant, pigment and other additives.
Q:What is the plastic bottle used to make after crushing?
After grinding, the granules can be pulled into recycled granules for processing in injection molding or blow molding factories.
Q:How do you glue a broken plastic basin?
Find you a soft plastic, burn it, drop the drop of plastic in the dew place!!

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