Effect of silica dispersed by special dispersing agents with green strategy on tire rolling resistance and energy consumption

Abstract

The state‐of‐art approach to realize the low rolling resistance of green tires is the high addition of SiO2. However, its dispersion capacity and the interface strength with rubber dominant the final properties of green tires. Here, we systematically study amphiphilic polyoxyethylene sorbitan monooleate, oleylamine, sorbitan monooleate, and oleamide to modify SiO2 through simple hydrogen‐bonded self‐assembly in order to replace the traditional silane coupling agent with low modification efficiency, many side reactions and complex reaction process. The results show that the rolling resistance and processing energy loss of the rubber composite prepared by SiO2 modified with polyoxyethylene sorbitan monooleate and oleylamine are significantly reduced, and other physical and mechanical properties (tensile strength, tear strength, and wear resistance) are also significantly improved compared with the silane coupling agent commonly used in green tire tread. Meanwhile, carbon–carbon double bonds belonging to polyoxyethylene sorbitan monooleate and oleylamine can participate in vulcanization of rubber to strongly improve the dispersion ability of SiO2 and the interface interaction between SiO2 and rubber matrix, so as to develop the fuel‐efficient green tire tread with high performance and low rolling resistance.

Effective hybridization ofSiO2microsphere and graphene with tannic acid interface modifier for fabrication of multifunctional natural rubber/graphene nanocomposites

“…The reason for the analysis may be the fact that the spherical N98 particles in the TGN system play a lubricating and plasticizing role, which reduces the Mooney viscosity of the blends. The spherical N98 acting as a boundary lubricating plasticizer can increase the mobility of other fillers (e.g., graphene, carbon black) and polymer chains by occupying intermolecular space 52 . Therefore, the appropriate amount of N98 inserted into TGN educes intermolecular friction and the energy required for molecular motion of polymer chains.…”

“…The spherical N98 acting as a boundary lubricating plasticizer can increase the mobility of other fillers (e.g., graphene, carbon black) and polymer chains by occupying intermolecular space. 52 Therefore, the appropriate amount of N98 inserted into TGN educes intermolecular friction and the energy required for molecular motion of polymer chains. That is, when a static load is applied to the composite material, the spherical N98 particles intervening between the macromolecular chains first roll homeopathically to lubricate the mutual sliding motion of the large fractional chains, resulting in the reduce in the internal friction between them effectively.…”

The Study of Enteromorpha-Based Reinforcing-Type Flame Retardant on Flame Retardancy and Smoke Suppression of EPDM

“…The physical properties are a non-ignorable performance index for elastic rubber in almost all applications [ 27 ]. It should be emphasized that, unfortunately, there is a tendency for most flame retardants to remarkably damage the mechanical behavior of rubber, especially for nonpolar rubber.…”

1-Aminopropyl-3-methylimidazolium Chloride-Modified Graphene Oxide/Rubber Composites Exhibiting High Wear and Low Rolling Resistances

“…7 Therefore, rubber composites exhibiting high wear and low rolling resistances have always been a hot research topic for the development of eco-friendly tires. 8 However, the simultaneous achievement of high wear and low rolling resistances is very difficult mainly because rubber composites exhibiting high wear resistance must be reinforced by nanoparticles, such as carbon black (CB), 9,10 silica (SiO 2 ), 11 carbon nanotubes (CNTs), 12 and graphene (GE). 13 Unfortunately, these nanoparticles aggregate spontaneously and have poor compatibility with the rubber matrix, causing more friction between the nanofillers, as well as between the nanofillers and rubber macromolecules.…”