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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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