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Low smoke halogen-free materials
Low smoke halogen-free materials
Low smoke halogen-free materials
Low smoke halogen-free materials
Low smoke halogen-free materials
Low smoke halogen-free materials

Low smoke halogen-free materials

Advantages:

Low-smoke halogen-free materials can reduce the toxic and corrosive gases produced during combustion. In poorly ventilated environments such as airplanes, train cars or ships, low-smoke and halogen-free materials are often used. Low-smoke halogen-free materials are also commonly used in the railway industry or shipbuilding industry. It is important to protect personnel and equipment from toxic and corrosive gases. The use of low-smoke halogen-free materials can also reduce the accumulation of toxic gases when the circuit is damaged due to fire or short circuit.

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name

Low-smoke halogen-free material 1#

No.

Test

Unit

Technical index

Results

judgment

1

Physical Properties

 

1.1

Density

mg/cm3

≤1.55

1.45

qualified

2

Rheological Properties

 

2.1

Mooney-Viscosity（100℃ 1+4）

MU

50-60

52

qualified

2.2

Rheometer（200℃-4min，ML）

N*M

 

0.38

Not judged

2.3

Rheometer（200℃-4min，MH）

N*M

 

2.17

Not judged

2.4

Rheometer（200℃-4min，t10）

Min

0.2-0.35

0:31

qualified

2.5

Rheometer（200℃-4min，t90）

Min

0.8-1.1

1:35

qualified

3

Mechanical Properties

 

3.1

Tensile strength

N/mm2

≥8.7

11.1

qualified

3.2

Elongation at break

%

≥140

249

qualified

3.3

Hardness（ShoreA）

 

 

74

qualified

4

Elongation test at low temperature

 

4.1

‘-40℃ Elongation

%

≥50

55.6

qualified

5

After ageing in air oven 135℃-168h

 

5.1

Yariation of tensile strength

%

±30

15.40%

qualified

5.2

Elongation at break，min

%

≥100

208

qualified

5.3

Yariation of Elongation at break

%

±30

-16.50%

qualified

6

Hot set test 200℃-15min-0.2N/mm2

 

6.1

Elongation under load

%

175

30

qualified

6.2

Elongation after unloading

%

25

6

qualified

7

Mineral oil resistance

 

7.1

After ageing–100℃-24h

 

 

 

 

7.2

Yariation of tensile strength

%

±40

-13.33%

qualified

7.2

Yariation of Elongation at break

%

±40

15.34%

qualified

8

Ozone resistance

 

8.1

25℃-24h-250-300PPM

 

8.2

Results to be obtained

 

No cracks

No cracks

qualified

9

Electrical properties

 

9.1

surface resistance at 20℃

Ω

≥109

2.66×109

qualified

10

Other properties

 

10.1

LOI

%

≥30

31

qualified

10.2

ROHS

 

qualified

qualified

qualified

 

 

 

name

Low-smoke halogen-free material 2#

No.

Test

Unit

Technical index

Results

1

Physical Properties

 

Density

g/cm3

1.53±0.03

1.48

2

Rheological Properties

 

Mooney-viscosity（100℃ 1+4）

MU

35-45

40

3

Machanical properties

 

Tensile strength

N/mm2

≥10.5

14.53

Elongation at break

%

≥170

304

Tear resistance

N/mm

5-10

7.8

Hardness（shore A）

 

82-92

87

4

cold elongation at -40℃

%

≥30

46.8

5

After ageing in air oven 120℃-168h

Yariation of tensile strength

%

±20

10.11%

Yariation of Elongation at break

%

±20

-17.66%

6

Mineral oil resistance

IRM902–100℃-72h

Yariation of tensile strength

%

±15

-7.88%

Yariation of Elongation at break

%

±15

8.99%

IRM903–70℃-168h

Yariation of tensile strength

%

±15

-12.56%

Yariation of Elongation at break

%

±20

7.08%

7

Ozone resistance

 

No cracks

No cracks

8

Electrical properties

 

surface resistance at 20℃

Ω

＞109

4.77×109

9

Other properties

 

LOI

%

33-36

34

ROHS

 

qualified

qualified

Directory for usage

1、Extrusion: CPE has good heat-resistant and processing capability and wide extrusion temperature range, which enhance the safety for processing. For its hardness and viscosity are higher than neoprene, its extrusion temperature is correspondingly higher by 5-10 degrees.

                       Temperature range for stuffing port: 40-50℃

                       Temperature range for machine body:55-70℃

                       Temperature range for machine head: 65-80℃

2、In practical production, according to the difference of extruding machine and cable diameter, the processing parameter shall be adjusted. We will provide relevant technical data to our consumers after they buy our products and send experienced technicians to give on-site guidance.

3、Storage: it can be stored for more than six mouths. And it can still be used even though hardened after long time storage. It should be better for recycling if the conditions allows. Keep away from direct sunlight and raining.

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