Effects of additives of organically modified montmorillonite and Octosilicate in a silica reinforced tire tread mixture

Córdova, W. R.; Julve, Daniel; Martínez, María Teresa; Perez, J. C. Lopera; Meier, Johann G.

doi:10.1016/j.clay.2020.105938

Cited by 5 publications

(1 citation statement)

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“…In tire industry, nano silica is highly used as reinforcing fillers in the rubber compounds to increase their mechanical properties (i.e. tensile strength, modulus, abrasion resistance) and reduce their rolling resistance 9 – 13 . However, due to presence of silanol groups (Si–OH) on the surface of silica nanoparticles (SNPs), they have tendency to aggregate in the rubber matrix 11 , 14 , 15 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Ghamarpoor

Jamshidi

2022

Sci Rep

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Non-agglomeration and dispersion of silica nanoparticles in polymers and their interfacial interactions to polymer matrix are the most important factors that influence nanocomposites performance. In this work, vinyltriethoxysilane (VTES) as a low VOC emission coupling agent was used for surface modification of silica nanoparticles to prepare better dispersion in nitrile rubber (NBR) and improve its interfacial interactions to silica nanoparticles. The results of X-ray photoelectron spectroscopy, thermogravimetric analysis and Fourier transform infra-red spectroscopy demonstrated successful attachment of VTES molecules on the surface of silica nanoparticles. Dispersion of the modified silica nanoparticles in NBR matrix was studied using field emission scanning electron microscopy and rubber process analysis. Results demonstrated that VTES significantly improved dispersion of nanoparticles in rubbery matrix. The bound rubber content showed that VTES effectively built a bridge between the silica nanoparticles and the rubber matrix that led to promising mechanical performances and strong interfacial interactions. Effect of nanoparticle content on the mechanical performances (static/dynamic) of the NBR was evaluated. It was found that higher modulus and reinforcement indices was obtained at 3 and 5 wt% of nanoparticles. Moreover, these composites had extremely low rolling resistance, the best wet skid resistance and the lowest Heat-Build up.

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