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Rubber for extrusion

Standard grade fumed rubber for molding has good physical properties, yellowing resistance and good processability. They are applicable to molded products with requirement for high transparency. E.g., keypads, sanitary products and industrial miscellaneous parts such as O-rings and sealing gaskets.

 

      Typical Properties:

 

Category

Item

Rubber for extrusion

MY D9250

MY D9260

MY D9270

MY D9280

Appearance

Transparent

Vulcanization

Hardness Shore A

50±2

60±2

70±2

80±2

Tensile strength MPa

8.5

8.5

8.0

8.0

Elongation at break %

500

400

300

200

Breaking set %

12

12

12

12

Tear strength B KN/m

25

25

25

20

Post-curing

Hardness Shore A

57±2

68±2

76±2

85±2

Tensile strength MPa

8.5

8.5

8.0

8.0

Elongation at break %

450

350

260

200

Tear strength B KN/m

20

20

20

18

Specific density 25°C g/cm³

1.15±0.04

1.18±0.04

1.22±0.04

1.25±0.04

Compression set 180*22h %

35

35

35

25

Resilience %

50

50

45

40

Dielectric strength  kV/mm

20

20

20

20

Volume resistivity Ω.cm

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

1.0 x 10¹⁵

Physical data in the above table is for reference only.

Vulcanization condition: 175℃× 5Min. Post-curing condition: 200℃ x 4h

 Addition of curing agent: liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane: 0.65%.

 

Advantage:

- Flexible processability

- Flexible comprehensive physical properties

- Good extrusion property and yellowing resistance

 

Applications:

- Applicable to silicone tubes and E tubes with requirement for high transparence such as milk tube, coffee tube.

 

Packing & Storage:

- 20kg/ carton lined with plastic bags or sheets.

- The products have a shelf life of 9 months from date of manufacture depending on the shore hardness if stored at room temperature in the originally sealed container.

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