[17a-K402-1~9] 12.6 Nanobiotechnology

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[17a-K402-3] DPD simulation of the mixing state of tire rubber and silica nanoparticles

〇Hideo Doi¹, Kaito Kondo¹, Yusuke Tachino¹, Koji Okuwaki¹, Yuji Mochizuki² (1.Rikkyo Univ., 2.Univ. Tokyo)

Keywords:

silica nanoparticle,dispersant,DPD simulation

In fuel efficient tires, the dispersion of silica nanoparticles (NPs) is an important factor in determining the balance between rolling resistance performance and wet grip performance. However, the hydrophilic silanol groups at the silica surfaces do not interact well with the hydrocarbon molecules of the rubber, which may aggregate and adversely affect fuel economy performance. In this study, alkylamines, which have an affinity for silanol groups and hydrocarbon molecules, were added as dispersants and their inhibition of aggregation was analyzed using the Dissipative Particle Dynamics (DPD) simulations.