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High-transparency mold silicone rubber

    High-transparency fumed rubber has high grade of transparency, excellent physical properties & yellowing resistance and good processability. They are applicable to molded products and can be used in food contact grade products with extremely requirement for high transparency, such as: nipple, bite stick , etc.


    Typical Properties:


    Category

    Item

    High-transparency rubber

    D9430

    D9440

    D9450

    D9460

    D9470

    D9480

    Appearance

    Transparent

    Vulcanization

    Hardness Shore A

    32±2

    40±2

    50±2

    60±2

    70±2

    80±2

    Tensile strength MPa

    8.0

    9.0

    9.0

    9.0

    9.0

    8.0

    Elongation at break %

    700

    600

    500

    400

    300

    200

    Breaking set %

    8

    8

    8

    8

    8

    8

    Tear strength B KN/m

    20

    35

    40

    40

    40

    20

    Post-curing

    Hardness Shore A

    33±2

    45±2

    55±2

    65±2

    75±2

    83±2

    Tensile strength MPa

    7.0

    8.0

    8.5

    8.5

    8.0

    7.5

    Elongation at break %

    650

    550

    450

    350

    250

    150

    Tear strength B KN/m

    12

    20

    25

    25

    25

    18

    Specific density 25°C g/cm³

    1.07±0.04

    1.13±0.04

    1.15±0.04

    1.18±0.04

    1.22±0.04

    1.25±0.04

    Compression set 180*22h %

    55

    45

    50

    45

    45

    40

    Resilience %

    55

    50

    50

    48

    40

    35

    Dielectric strength  kV/mm 

    20

    20

    20

    20

    20

    20

    Volume resistivity Ω.cm

    1.0 x 10¹⁵

    1.0 x 10¹⁵

    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 physical properties

    - High transparency

    - Good yellowing resistance

     

    Applications:

    - Food contract grade products with extremely requirement for high transparency, such as nipple, bite stick

     

    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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