Project progress (in years): 0 20 40 0 4 8 Tor que / dN M Time/ min
Torque increase indicates
curing/crosslinking of compound.
Impact of recovered carbon black inorganic impurities
on crosslinking and in-rubber performance
Cluster 06: Composites, project T16005a
University of Twente Department of Elastomer Technology and Engineering,
7522LW Enschede, The Netherlands.
06.09
A. Anjum
1, A. Burkhart
2, K. Efimov
2, C. Recker
2, W. Dierkes
1, A. Blume
11
University of Twente, Enschede, The Netherlands
2
Continental Reifen Deutschland GmbH, Hannover, Germany
Contact: a.anjum@utwente.nl
Hardness
Pyrolysis 0 250 500 750 0 4 8 12 Str e s s / MPa Strain/ % Truck Car Mix 0 20 40 60 0 4 8 Tor que / dN m Time/ min Similar stress-strainproperties Different curing behavior
Carbon, Silica,
Sulfur
Oil
Use
Waste
Recycling
with sulfur
Elemental mapping indicated sulfur present on silica surface
For the first time, the active sulfur presence in recovered carbon black was shown by the torque increase indicating curing of
compounds without curing agent (sulfur)
Different cure behavior by varying ash content is elucidated as
synergistic effect of silica and active sulfur attached to its surface
Most sulfur is attached to silica surface
Recovered
carbon black
+ Carbon black
Influence on in-rubber properties ???
Truck Car Mix
15% 25% 20%
Gas
Conclusion
Elemental mapping Stress- strain behavior
Curing behavior
Active sulfur
from
inorganics?