Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Study of the influence of processing parameters on the mechanical properties of Polyamide 66 and glass fiber composites obtained by the injection molding process
Submission Author:
Maurício Baesso , SC , Brazil
Co-Authors:
Maurício Baesso, Matheus Hromatka, Arthur Mendonça, Diego Salvaro, Cristiano Binder, Vanessa Oliveira Castro, Claudia Merlini
Presenter: Maurício Baesso
doi://10.26678/ABCM.COBEM2023.COB2023-2118
Abstract
Sustainability stands as one of the driving forces of today’s industry. When it comes to component manufacturing, considerations extend beyond costs, production impacts and disposal processes. One strategy is replacing traditional metals with lightweight composites, via methods such as injection molding. This study evaluated the influence of processing parameters on Polyamide 66 components, especially on microstructure and mechanical properties. The study investigated polyamide composites with varying glass fiber contents by weight (30%, 35% and 50%), injection pressure (1000, 1500 and 2000 bar), temperature (320, 330 and 340°C) and speed (100, 125 and 150 mm/s). Through Taguchi Method, the number of possible combinations were reduced from 3^4 to 9. Archimedes’ density measurement characterized the injected components density and presence of voids, and SEM analysis evaluated the fiber-matrix adhesion. Tensile tests and dynamic mechanical analysis (DMA) evaluated the mechanical and thermomechanical characteristics of the composites. Results revealed glass fiber content as the primary factor influencing mechanical properties, followed by pressure, temperature, and injection speed. Optimal parameters are estimated to be 1000 bar, 320°C and 100 mm/s. This study tried to align energy and material efficient practices with manufacturing excellence to achieve high-performance composites with enhanced mechanical properties.
Keywords
Injection molding, Composite Materials, Fiber-reinforced polymers
