Metodología para el cálculo de la viscosidad empleando como caso práctico el reprocesado de ABS

Abstract

This paper explains the methodology for calculating the viscosity, using as a case study the recycling of Acrylonitrile–Butadiene–Styrene (ABS). To simulate recycled ABS, virgin ABS was processed through 5 cycles, at extreme processing temperatures, 220ºC and 260ºC. The virgin ABS and the recycled ABS were rheologically characterized after the various cycles of reprocessing in order to evaluate their corresponding properties and correlate them with the number of cycles undergone. The viscosity is expressed using the mathematical model of Cross-WLF. This mathematical model is used to introduce viscosity in Computer Aided Engineering (CAE). The results show that viscosity decreases as the number of reprocessing cycles increases.

Keywords

• Injection
• plastics
• modelization
• Viscosity
• ABS.