Assessment of benzoxazine resins as brake pad friction material binder: tribological properties and PM emission

This study explores benzoxazine resins as alternative binders for brake pad friction materials, comparing them to the established phenolic resins. Benzoxazine resins feature great thermal properties, alongside industrially-attractive properties such as forgiving storage conditions and extended shelf life. Tribological Pin-on-Disc tests were conducted at different temperatures, with airborne emission monitoring. The characterization of the samples and their worn surfaces was carried out through TGA, SEM, and EDXS analyses. The results revealed promising tribological performance for benzoxazine-bound materials, suggesting potential environmental benefits, especially in high-temperature conditions. This research builds upon a preliminary study focusing on the processing aspects of benzoxazine resins.