Influence of Selected Silica Fillers on the Properties of Vulcanised Rubber Blends
It has been found that the use of selected precipitated silica fillers (80 phr; BET surface 130–235 m2/g) in SBR–BR blends (3:1 by weight) containing coupling agent (CA in the amount of 6.4 phr) and thermomechanical treatment (TMT) at selected temperature
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Influence of Selected Silica Fillers on the Properties of Vulcanised Rubber Blends W.M. Rzymski, A. Smejda-Krzewicka, J. Rogoża and A. Ochenduszko Abstract It has been found that the use of selected precipitated silica fillers (80 phr; BET surface 130–235 m2/g) in SBR–BR blends (3:1 by weight) containing coupling agent (CA in the amount of 6.4 phr) and thermomechanical treatment (TMT) at selected temperature (up to 160 °C) of the rubber–silica filler– CA premixes leads to cured compounds showing increased ice and wet grip (IG, WG), and acceptable rolling (RR) and abrasion resistance (AR) as well. Better results (IG, WG, AR) were obtained using in chain with ester groups-functionalised styrene–butadiene rubber (CF-SBR) instead of standard SBR. The best results were found using silica filler having BET surface of 130–160 m2/g.
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Introduction
Since 1980, the year in which the “Green Tyre Concept and Technology” [1] was introduced on an industrial scale, the use of silica fillers, in particular precipitated nano-silica, has increased significantly in the tyre industry. The use of these fillers as a key component of the rubber in the tyre tread—connected with the use of an adequate amount of a coupling agent of sufficient quality and a much lower amount of activated carbon black—offered the opportunity to produce tyres with reduced rolling resistance and acceptable ice and wet traction. This also made it possible to lower the fuel consumption of passenger cars and heavy goods vehicles considerably [2–4]. In addition to an appropriate amount and quality of these fillers, it is necessary to use an elastomer matrix with an appropriate property profile, which in passenger car tyres is usually a mix of styrene–butadiene rubber (SBR) and butadiene rubber (BR) [5, 6]. With the aim of achieving strong interaction between the elastomer mix and the silanol group on the surface of silica filler particles and, in doing so, between rubber W.M. Rzymski (&) A. Smejda-Krzewicka Institute of Polymer and Dye Technology, Łódź University of Technology, Łódź, Poland J. Rogoża A. Ochenduszko Synthos S.A., Oświęcim, Poland © Springer International Publishing AG 2017 W. Grellmann and B. Langer (eds.), Deformation and Fracture Behaviour of Polymer Materials, Springer Series in Materials Science 247, DOI 10.1007/978-3-319-41879-7_37
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qualities and the desired property profiles of tyres, the use of emulsion and solution SBR, which were functionalised on the chain ends or within the chain with select side groups [5–10], or the use of SBR with different chain microstructures [11] has been attracting great attention in the past few years. However, the starting point of current approaches is that there are no authoritative results of comparative investigations into the effect of silica fillers with a different specific surface (with or without the use of a coupling agent and with or without thermomechanical treatment of the rubber/filler/coupling agent premixes) on the property profile. The publications in this area often p
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