TY - JOUR
T1 - Elucidating the role of clay-modifier on the properties of silica-and silica/nanoclay-reinforced natural rubber tire compounds
AU - Sattayanurak, S.
AU - Sahakaro, K.
AU - Kaewsakul, W.
AU - Dierkes, W.K.
AU - Reuvekamp, L.A.E.M.
AU - Blume, A.
AU - Noordermeer, J. W.M.
N1 - Funding Information:
Authors wish to acknowledge the support from the Dutch Natural Rubber Foundation (Rubber Stichting, the Nether-lands), Apollo Tyres Global R&D B.V. (the Netherlands), and Prince of Songkla University (Thailand) Ph.D. Scholar-ship.
Publisher Copyright:
© BME-PT.
PY - 2021
Y1 - 2021
N2 - Organoclay (OC) is one of the potential secondary fillers to be applied in silica-reinforced rubber compounds for tire applications. Commercial OC contains a large proportion of surface modifier, i.e., dimethyl dihydrogenated tallow am-monium chloride (2HT) type, that has an influence on the compound properties. To elucidate the effect of 2HT on the properties of silica-Natural Rubber (NR) compounds, a silica-only system, silica/OC, and silica/montmorillonite (MMT)/2HT added in situ during mixing, were comparatively studied. Irrespective in which form 2HT is added, it has potential to further enhance the performance of silica-NR compounds. Incorporation of 2HT suppresses filler flocculation and improves process-ability. Overall, the silica-only filled compound shows better mechanical properties than the silica/clay dual filler systems. The use of a small amount (2.4–4.7 phr) of 2HT improves 300% modulus, tear strength and abrasion resistance. The silica/OC gives better mechanical properties than the silica/MMT/2HT. With the optimum content of 2HT, a higher tan δ at –20°C and lower tanδ at 60°C can be achieved, all showing the beneficial potential of utilization of the modifying agent to improve wet traction and rolling resistance of silica-based tire tread compounds.
AB - Organoclay (OC) is one of the potential secondary fillers to be applied in silica-reinforced rubber compounds for tire applications. Commercial OC contains a large proportion of surface modifier, i.e., dimethyl dihydrogenated tallow am-monium chloride (2HT) type, that has an influence on the compound properties. To elucidate the effect of 2HT on the properties of silica-Natural Rubber (NR) compounds, a silica-only system, silica/OC, and silica/montmorillonite (MMT)/2HT added in situ during mixing, were comparatively studied. Irrespective in which form 2HT is added, it has potential to further enhance the performance of silica-NR compounds. Incorporation of 2HT suppresses filler flocculation and improves process-ability. Overall, the silica-only filled compound shows better mechanical properties than the silica/clay dual filler systems. The use of a small amount (2.4–4.7 phr) of 2HT improves 300% modulus, tear strength and abrasion resistance. The silica/OC gives better mechanical properties than the silica/MMT/2HT. With the optimum content of 2HT, a higher tan δ at –20°C and lower tanδ at 60°C can be achieved, all showing the beneficial potential of utilization of the modifying agent to improve wet traction and rolling resistance of silica-based tire tread compounds.
KW - Nanoclay
KW - Reinforcement
KW - Rubber
KW - Silica
KW - Surface modifying agent
KW - UT-Gold-D
UR - http://www.scopus.com/inward/record.url?scp=85106892813&partnerID=8YFLogxK
U2 - 10.3144/EXPRESSPOLYMLETT.2021.56
DO - 10.3144/EXPRESSPOLYMLETT.2021.56
M3 - Article
AN - SCOPUS:85106892813
VL - 15
SP - 666
EP - 684
JO - Express polymer letters
JF - Express polymer letters
SN - 1788-618X
IS - 7
ER -