Tire tread compounds with reduced rolling resistance and improved wet grip

Abstract

The aim of this work is to investigate the replacement of carbon black by silica‐organosilane coupling agent system and the number of processing steps on the mechanical properties, rolling resistance, and wet grip of truck tire treads. Eight compounds were prepared: two formulations based on carbon black, five formulations with the partial replacement of carbon black by a silica‐organosilane coupling agent system, and one formulation with the total replacement of carbon black with silica. The rolling resistance decreased by 10% and the wet grip increased by 18.5% for the compound with 15 phr of silica, 3 phr of organosilane, and three processing steps compared to the standard compound. The processing steps also promoted an improvement in these properties for the composition with 50 phr of carbon black. The partial use of silica reduced the abrasion loss, thus confirming the durability of the compound. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45334.

Natural rubber compositions with the partial/total replacement of carbon black/naphthenic oil by renewable additives: Rice husk ash and cashew nut oil

“…These properties were similar to the findings for the partial substitution of RHA without the silanization process [Figure (b)], indicating that the silanization process did not affect these properties. Veiga et al . found that the silanization process did not interfere with the rheometric curve of the NR/BR/SBR formulations containing silica and CB.…”

Tire tread rubber compounds with ternary system filler based on carbon black, silica, and metakaolin: Contribution of silica/metakaolin content on the final properties

“…With respect to crosslink density (μ), only a slightly increase is observed as silica is replaced by MK. Considering the fact that silica tends to absorb vulcanization agents, it was expected a changing in both T90 and μ values, as stated by literature, 11 but this behavior was observed only for crosslink densities. Indeed, it is appears that MK can contribute to enhance a little the crosslink density, since the value of the composite 0:100 is higher than 100:0 Figure 3 shows the dependence of the complex viscosity as function of strain of all treads compounds in uncured state.…”

“…Furthermore, studies using silane were conducted to achieve better filler dispersion and rubber-silica interaction. 5,[10][11] In addition to the silica, other types of filler have been also investigated in tire tread compounds. Gopi et al 12 assessed the partial replacement of CB by Cloisite 15A and reported that 6 phr of this organoclay and 25 phr of CB reduced rolling resistance and had similar wet grip resistance than tread compound with 40 phr of CB.…”

Highly enhanced tire performance achieved by using combined carbon nanotubes and soybean oil

“…1,2 The recent high-level requirements for high-performance tires are getting much more severe that they should not only demonstrate good wet grip, snow traction, dry stability, and rolling resistance capabilities but also enhanced abrasion resistance while minimizing the trade-off of the aforementioned characteristics. Since the introduction of silica as a reinforcing filler for the elastomer composites of tire treads in the early 1990s, [3][4][5] the rolling resistance and wet traction abilities of these tires have been largely improved in comparison with traditional fillers, such as carbon black. 6 Such improvements result from the hydroxyl groups on the surface of silica particles that may result in hydrogen bonding.…”