Silane Cross-linkable Low Smoke Zero Halogen Flame Retardant EPDM Compound

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Product Description:

epdm rubber cable:
1, 30-year professional manufacturer
2, low-smoke, halogen-free, flame retardant
3, UL and CM grade

epdm rubber cable:


1. Type and application

Type

Product

Application and Cable Specification

GDWE1125

125 degree C Silane Cross-linkable Low Smoke Halogen Free Flame Retardant EPDM  Compound

Used as insulation for low voltage cables, flexible cables, and rubber insulation and jacket for 105 degree C and 125 degree C cross-linkable low smoke halogen free cables

Work temperature: -40 to 125 degree C

GYJE-20

Silane Cross-linkable EPDM Insulating Compound

Used as rubber insulation for 15 to 20 KV cables and flexible cables, and rubber insulation and jacket for 70 degree C to 125 degree C cables

Work temperature: -40 to 125 degree C

GYJE-10

Silane Cross-linkable EPDM Insulating Compound

Used as rubber insulation for less than 10 KV cables and flexible cables, and rubber insulation and jacket for 70 degree C to 125 degree C cables

Work temperature: -40 to 125 degree C

2. Description

Silane cross-linkable EPDM rubber compound, based on EPDM and other copolymer, is produced and pelletized by special technology, adding some flame retardant, initiating agent, cross-linking agent, and some other suitable additives. This compound contains two parts A and B, which should be mixed according to suitable proportion when used. This compound has well performance of processing easily, physical properties, and cost advantage with low density.

3. Processing

The following temperature() profile of extruder is recommended:

Type

Proportion of A and B

Processing Equipment

Compression ratio

L/D

Processing temp.

Cross-linkable conditions

Z 1

Z2

Z3

Z4

Head

Die

GDWE1125

90:10

It is better to use professional extruder for halogen free compound. If you use PVC extruder, the speed should be lower, reinforce cooling

1.2~1.5:1

25:1~

18:1

100

140

160

160

165

170

Hot water or steam, based on the terms of more than 85, 4h/mm thickness cross-linking speed

GYJE-20

GYJE-10

97:3

Conventional PVC extruder

2.5:1~3.5:1

25:1

110~170

180-190

method of application:

1. When you use this product, please mix A and B before put into the hopper. If you need color, the cable factory can use the polyvinylene masterbatch. The material should be used up in 8 hours after being opened and the rest can be resealed and usable within 24 hours.

2. The extruder should be cleaned after stopping with PVC material, (It is preferable if you can take apart the screws to clean.)

3. The silane cross-linkable LSZH compound should not be stayed in the extruder for a long time .If it stayed for long time, it will pre-crosslink after open the machine, which will make lumps in the surface of cable. It need to be discharged all the pre cross-linker, and then produce the cable properly.

4. To ensure the safety and fully of the cross-linking, when immersed the compound into the hot water or steam, please calculate the cross-linking time based on the terms of more than 85, 8h/mm thickness cross-linking speed.

5. At room temperature, the degree of cross-linking can also meet requirements after 4-10 days. The specific time can be different according to the temperature and humidity.

Note:

  1. 1.        Transportation: avoid direct sunlight and weathering and machine damage

  2. 2.        Convey: discharge softly, put off softly, avoid from the bursting by the stressed with the aluminum-plastic Bag.

  3. 3.        Storage: it can not be landing stack. It should be put on the pallet in the clean dry storage.

  4. 4.        Keep dry: When the material used, it must not be contained the outer water. Otherwise, it will seriously pre-crosslink.

  5. 5.        Quality guarantee period: 6 months after manufacturing.


4. Storage and transport

Packaging:Vacuum Aluminum foil and PE membrane inside bag, and kraft outside bag.

Storage and transport: Avoiding in direct sunlight and weathering. The storage place should be clean, cool, dry, and ventilated.


5. Properties

Note: The below data is got after the compound boiled in 80 degree C water 4 hours. Natural crosslink can also be finished at proper temperature and in proper time.

NO.

Item

Units

GDWE1125

GYJE-20

GYJE-10

Standard Vaule

Typical Value

Standard Vaule

Typical Value

Standard Vaule

Typical Value

1

Density

g/cm3

1.35

0.9

0.88

2

Tensile Strength

MPa

≥10

12.0

≥16

23.0

≥16

21.0

3

Elongation at break

%

≥150

250

≥300

530

≥300

540

4

Hardness

Shore A

90

90

70

5

Thermal aging

Conditions: temperature

158

time

168h

TS retention

%

≤±30

-11

≤±30

-6

≤±30

-8

EB retention

%

≤±30

-10

≤±30

-8

≤±30

-7

6

Thermal prolongation

200,0.2MPa,15min

Elongation under load

%

≤175

80

≤175

70

≤175

70

Permanent deformation

%

≤15

0

≤15

0

≤15

0

7

Volume Resistivity

Ω·m

≥1.0×1012

2.3×1013

≥1.0×1013

1.0×1014

≥1.0×1013

1.0×1014

8

Dielectric Strength

MV/m

≥20

28

≥25

35

≥25

32

9

Resistance to thermal stress crack

h

≥96

pass

10

Resistance to environment stress crack

h

≥96

pass

11

Oxygen Index

≥30

30

12

Smoke density Flaming

≤100

60

Non flaming

180

13

Burst size of HCL

mg/g

≤5

0

14

PH Value

≥4.3

5.6

15

Conductivity

μS/mm

≤10

0.6

16

Toxicity Index

≤5

1



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