PE Compound

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Product Description:

PE Compound

I.                  Type andapplication

Type

Product

Application

NDH

Black LDPE jacket compound for  resistance to environmental stress crack

Jacket  of telephone cable, RF cable and optical cable

LDH

Black  LLDPE jacket compound

Jacket  of telephone cable and optical cable

MH

Black  MDPE jacket compound

Jacket  of optical cable, aerial cable and power cable

GH

Black  HDPE jacket compound

Jacket  of optical cable. High strength and abrasion resistant jacket

NLDJ

Black weatherability LLDPE  insulating  compound

Insulation  of aerial cable, less than 1kV

NGJ

Black weatherability HDPE  insulating compound

Insulation  of aerial cable

ZPE

Flame retardant PE compound

Flame-retardant  insulating or jacket of 70~90℃wires and cables  

RDH

Flexible PE jacket compound

Flexible PE jacket of 70wires  and cables

II. PE compound, based on PE resin, isproduced and pelletized with the double corrugated screw, in which variousadditives are added. The compound is according to GB 15065-94 and IEC 60502. The compound has outstandingperformances of processing, physical, mechanical and electrical properties.

III. Processing: It is recommended thatcompound should be processed with extruder having a minimum L/D ratio of 25.Compound (not including ZPE) should be thoroughly dried before use,  and the maximum drying temperature should notexceed 100℃.

Thefollowing temperature(℃) profile of extruder is recommended:

Type

Zone 1

Zone 2

Zone 3

Zone 4

head

die

NDH

180

190

200

210

220

230

LDH

170

180

190

200

210

220

MH

180

210

220

230

245

240

GH、NGJ

190

215

230

245

245

240

NLDJ

160

180

195

200

200

210

ZPE

140

150

160

170

170

165

RDH

140

160

175

180

190

190

Note: The processing parameters are forreference only, optimal conditions may vary according to the equipment used.The cooling water tank should be used sectionally cooling with warm-waterechelon in order to reduce internal stress.

ⅳ. Properties

Item

Unit

NDH

GH

LDH

MH

RDH

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Standard

Typical

Volume Resistivity at 20

≥Ωm

1.0×1014

1.1×1015

1.0×1014

8.0×1014

1.0×1014

8×1014

1.0×1014

3.6×1014

1.0×1013

3.0×1013

Dielectric Strength

MV/m

25

37

25

35

25

32

25

35

25

28

Dielectric Constant

2.80

2.36

2.75

2.40

2.80

2.35

2.75

2.4

Dielectric Loss, Angular  Tangent

0.005

0.0006

0.005

0.001

Melt Flowing  Index

g/10min

2.0

0.9

0.5

0.3

2.0

1.1

1.0

0.5

2.0

1.9

Density

g/cm3

0.920-

0.949

0.936

0.950-

0.978

0.953

0.920-

0.945

0.938

0.940-

0.955

0.945

Tensile Strength

MPa

13.0

19.0

20.0

23.0

14.0

18.0

17.0

23.0

13.0

17.0

Yield Strength

MPa

16.0

20.0

Elongation at Break

%

500

790

650

850

600

700

600

800

500

590

Low Temp. Elongation  at Break

%

175

210

Impact Brittleness in low temp.

≤℃

-76

Pass

-76

Pass

-76

Pass

-76

Pass

-76

Pass

Dispersity of Carbon Black

Scatter

6

7

6

7

6

7

6

7

6

7

Carbon Black Content

%

2.60±0.25

2.6

2.60±0.25

2.6

2.60±0.25

2.6

2.60±0.25

2.6

2.60±0.25

2.6

Resistance  to Environmental Stress Crack F0

h

96

Pass

500

Pass

500

Pass

200

Pass

96

Pass

200 Oxidative  Induced Time

min

30

Pass

30

Pass

30

Pass

30

Pass

Note: 1The sample made method is thermoplastic pressing which is accord toGB9352 standard.


Item

Unit

NLDJ

NGJ

ZPE

Standard

Typical

Standard

Typical

Standard

Typical

Volume Resistivity at 20

Ωm

1.0×1014

8×1014

1.0×1014

8×1014

1.0×1011

5.0×1012

Dielectric  Strength

MV/m

25

35

35

40

20

25

Dielectric Constant

2.45

2.35

Dielectric Loss, Angular Tangent

0.001

0.0008

Melt Flowing Index

g/10min

1.0

0.6

0.4

0.2

2.0

1.36

Density

g/cm3

0.920-

0.945

0.938

0.955-

0.978

0.958

Tensile  Strength

MPa

14.0

20.0

20.0

28.0

10.0

15.0

Yield Strength

MPa

16.0

20.0

Elongation at Break

%

600

750

650

830

250

650

LowTemp.Elongation at Break

%

175

240

Impact Brittleness in low temp.

-76

Pass

-76

Pass

-40

Pass

Dispersity of Carbon  Black

Scatter

6

7

6

7

Resistance to Heat Stress Crack

h

96

Pass

Resistance  to Environmental Stress Crack F0

h

500

Pass

500

Pass

96

Pass

Vicat Softening Temp.

110

127

Air oven aging

100×10d

100×10d

1007d

Tensile Strength after aging

MPa

13.0

19.0

20.0

26.0

10.0

14.6

Elongation atBreak after aging

%

500

700

650

760

250

670

(0-1008)h Artificialweatheringaging time

Variation on Tensile Strength

%

±25

14.5

±25

15.5

VariationonElongationat Break

%

±25

17.2

±25

18.3

(504-1008)h

Aging time

Variation on Tensile  Strength

%

±15

12.5

±15

10.2

VariationonElongation  atBreak

%

±15

10.5

±15

9.5

Oxygen Index

26

26.4


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