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:What are the distinguishing features of plastics? What is their chemical name?
PE) and linear low density polyethylene (LLDPE). Among the three, HDPE has better thermal, electrical and mechanical properties, while LDPE and LLDPE have better flexibility, impact and film forming properties. LDPE and LLDPE are mainly used for packaging film, agricultural film, plastic modification, etc., and HDPE is widely used in many fields, such as film, pipe, injection, daily necessities and so on.
Q:Is the resin material of imitation jade handicraft Plastic?
Resin usually refers to softening or melting range after heating. When softening, it tends to flow under external force. At normal temperature, it is solid, semi solid, and sometimes liquid organic polymer.
Q:What is plastic and what is the difference between plastic and plastic?
Plastic raw materials are extracted from some oil in the most familiar part of PC material (polycarbonate) is extracted from the oil, the PC material has a gasoline burning time; ABS (acrylonitrile butadiene styrene plastic) is made from coal, ABS a soot like when burn out; POM (polyoxymethylene plastic) is made from natural gas, POM will have a very smelly smell of gas in the burn time.
Q:Is chlorine dioxide corrosive to plastic products?
NoThe chemical properties of plastic products are very stable. If they are corrosive, are we still worried about white waste? So chlorine dioxide is not corrosive to plastic products
Q:Can plastic bottles drink hot water?
Plastic of this kind of material is used mainly to pack mineral water, juice, carbonated beverage plastic bottle. Plastic 1, polyethylene terephthalate (PET). This material has poor heat resistance and the maximum use temperature is not more than 70 degrees celsius. Heating or holding water will deform and dissolve harmful substances.Don't use this kind of drink bottled hot water, and don't use it as a cup or storage for a long time. You'd better finish it and throw it away.
Q:What is the shell of the relay? What exactly is plastic?
Other crosslinked plastics include unsaturated polyester, epoxy resin, phthalic two, diallyl resin, etc.. In thermoplastic resins, the molecular chains of resins are linear or branched, with no chemical bonds between the chains, and soften the flow when heated. The process of cooling hardens is a physical change. The first heating thermosetting plastics can be softening, heated to a certain temperature, chemical reaction and curing a chain to harden, this change is irreversible, then again, when heated, can no longer become soft flowing.
Q:What is plastic made of?
Using petroleum as raw material; transporting the crude oil to the petroleum processing plant for dehydration and desalination, and then fractionating it into various fuel oils such as gasoline, kerosene, diesel, etc.. The preparation of plastic raw materials to a called cracking of oil processing oil, first producing ethylene and propylene raw gas, and then the addition polymerization is made: this material called polyethylene and polypropylene resin. Then hot processing is made of various materials called polyethylene plastics and polypropylene plastics
Q:What is the white fine plastic rope hanging with a tag on it?
The white, thin plastic rope hanging from the coat is called a nylon rope.
Q:How many kinds of plastics are there?
PC: commonly known as polycarbonate. The variety is also a transparent material, high surface hardness, scratch resistance, strong impact resistance, high strength, good weather resistance (that is not afraid of the sun). The furniture is the sunshine plate screen baffle material hollow extrusion molding. Features: high price cost, about PMMA higher than about 40%.
Q:What's the difference between memory plastic and sheet metal?
Plates, glasses frames, Han Gaa In glassesMaterial: made of high-tech plastic memory plate.

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