DescriptionThe rapid development of high-performance rubber materials has become increasingly essential for the development of high-performance, high-quality tires that combine vehicle safety with environmental friendliness. The rubber compounds that make up tires contain many different types of materials, from their polymer framework to reinforcing agents such as silica and carbon black, additives such as oil and resin, as well as crosslinking agents. The interrelationships between these materials are extremely complex, and it is the interaction between them that manifest in a rubber’s performance.
We have recently developed large-scale molecular simulation of rubber materials to analyze and elucidate the relationship between various factors at the molecular level and the rubber performance. This new simulation achieves realistic and highly precise simulations of rubber materials at the molecular level through coordinated utilization of such world-class research facilities as the SPring-8*, J-PARC** and the K computer. Applying this simulation to the observation of rubber failure has enabled us to observe, for the first time, the entire breakdown process from its origin in the formation of voids at the molecular level to the development of these voids into cracks.
In this presentation, we will explain some examples of tire development using our simulation technology, including examples of developing tires with high wear resistance using the large-scale molecular simulation.
* SPring-8 is large scale synchrotron radiation facility. (Location: Sayo, Hyogo, Japan) ** J-PARC is a proton accelerator and experimental facility. (Location: Tokai, Ibaraki, Japan)