| 簡 介： |
Today silica is being widely applied as a reinforcing filler in tread compounds for tyres. Silica needs silanisation in order to fully develop its reinforcing capabilities and the
current industrial practice consists in achieving it during the mixing operations. It means that a condensation reaction must be activated, controlled and completed in a
highly viscous matrix, while the optimum dispersion of filler particles is achieved. In sharp contrast with carbon black filled compounding, the preparation of silanatedsilica
based materials is nowadays made on relatively
complex mixing lines, according to specific procedures that were essentially and successfully developed through a pragmatical approach. This leaves however room for improvement, providing the complex set of events that take place during the process is better understood. Exploiting the mixing fingerprints allows rubber engineers to control and somewhat monitor the mixing line with a certain degree
of confidence. Further improvement are expected
through a better understanding of the variation of certain key properties of the compound along the line. |
