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Carbon black for high damping

Developed Carbon black for high damping

Typical Properties in Natural Rubber

  Curing Time
(min)
SEAST
9U
(Developed)
SEAST
6P
(Developed)
SEAST
6
(ISAF)
Mooney Viscosity ML1+4 125℃ - 71.4 62.0 61.6
Mooney Scorch Time t5Lmin 125℃ - 14.3 10.0 10.0
Hardness (JIS Hs) 30' 64 66 65
200% Modulus MPa 30' 5.4 6.0 6.5
Tensile Strength MPa 30' 32 31 31
Elongation at Break % 30' 630 580 560
Rebound Resilience % 40' 51 54 55
Carbon Black Dispersion % 40' 97 98 98
Viscoelastic Property tanδ   40' 0.205 0.196 0.184
Viscoelastic Property E'   40' 12.0 10.6 10.0

* Formulation: RSS No.1 100, Zinc Oxide 5, Stearic Acid 3, Accelerator DM 0.6, Sulfur 2.5, Carbon Black 40.

* Mixing Procedure: Using B type Banbury Mixer.

* Curing Temperature 145℃.

* Measuring Method: Viscoelastic Property: 15Hz, ε=2.0%, at room temperature.

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