Micro milling of polymeric micro injected specimens with randomly oriented carbon nanotube fillers
by Claudia Pagano; Aldo Attanasio; Lara Rebaioli; Elisabetta Ceretti; Irene Fassi
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 22, No. 2, 2020

Abstract: The interest in the application of carbon nanotube (CNT) composites is recently increasing in several industrial sectors. The main reason for this growing attention is the reinforcing effect of the CNTs. However, the composite use is limited by technological issues concerning the manufacturing processes when small features are required. A multistage process chain could exploit the advantages of suitable processes to enhance the control of the filler orientation. This paper investigates the feasibility of milling micro features on micro injected specimens of POM/CNT and LCP/CNT composites. Design of experiment is used to study a suitable experimental design to investigate the influence of the material and the process parameters on the machinability and the feature geometry. POM-based composites showed a better machinability and allowed a fabrication of more accurate features, while LCP showed high cutting forces and the presence of diffused burrs, preventing the fabrication of very small features.

Online publication date: Mon, 09-Mar-2020

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