Effect of Functionalization of Carbon Black on Rubber Properties

1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
T, °C
0.1
-100 -80 -60 -40 -20 0 20 40 60 80 100
Figure 9. Temperature dependences <strong>of</strong> tan δ at strain amplitude 2.5% and 10 Hz for OE-SSBR/BR compounds with a variety <strong>of</strong> fillers
Dynamic properties (rolling resistance):
As mentioned before, due to the lower filler-filler interaction and higher polymer-filler
interaction, the filler networking is substantially depressed in CSDPF 4000-filled
compounds. The much less developed filler networking in CRX4210 compounds would
show a great impact on the temperature dependence <strong>of</strong> hysteresis for filled vulcanizates.
As can be seen in Figure 9, where the temperature dependencies <strong>of</strong> tan δ measured at
2.5% strain amplitude and 10 Hz are presented, relative to carbon black, CRX4210 gives
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
tan δ OESSBR/BR 70/30,
Filler: equal volume
Strain 2.5%, 10 Hz
tan δ max
N234
12
Silica/TESPT 6.4 phr
Silica +
TESPT 6.4 phr
N234
CRX4210/
TESPT 2.7 phr
OESSBR/BR 70/30,
Filler: equal volume
70°C, 10 Hz
CRX4210
TESPT 2.7 phr
Figure 10. Comparison <strong>of</strong> tan δ max <strong>of</strong> OE-SSBR/BR compounds filled with a variety <strong>of</strong> fillers