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Effect of Recycled Polyvinyl Butyral (rPVB) Addition on the Tribological Performance of Glass-Fiber Reinforced
Isabel Ariadna Carmona-Cervantes1, Iván Campos-Silva1, Ulises Figueroa-López2
1Instituto Politécnico Nacional, Grupo Ingeniería de Superficies, SEPI-ESIME Zacatenco, Mexico City 07738, Mexico.
Abstract:
Plastic recycling in the automotive industry is a priority. In this study, the effect of adding recycled polyvinyl butyral (rPVB) from automotive windshields on the coefficient of friction (CoF) and specific wear rate (k) of a glass-fiber reinforced polyamide (PAGF) is investigated. It was found that, at 15 and 20 wt.% of rPVB, it acts as a solid lubricant, reducing CoF and k up to 27% and 70%, respectively. Microscopical analysis of the wear tracks showed that rPVB spreads over the worn tracks, forming a lubricant layer, which protects the fibers from damage. However, at lower rPVB content, fiber damage cannot be prevented as the protective lubricant layer is not formed.
