THERMOFORMING PROCESS PARAMETER OPTIMIZATION OF THERMOPLASTIC PEKK/CF and PPS
Abstract
Thermoplastic composite parts in the aerospace industry have recently been increased due to reshaping and reused potentials of the thermoplastic composite materials. The thermoforming process is an effective manufacturing methodology to form thermoplastic composite materials. The main benefits of the process are low cost and short process time. Optimization of the process parameters is essential for correct parts production. In this present study, effects of plate geometry and connection technique, pre-heating, and pressing parameters are investigated experimentally for the thermoforming of Poly Ether Ketone Ketone / Carbon Fiber (PEKK / CF) and Polyphenylene Sulfid (PPS) sheets. Results reveal that wrinkle and warping problems of the formed sheets are minimized by optimization of these parameters.
Keywords
Thermoplastic, thermoforming, PEKK, PSS
Supporting Institution
Tübitak Teydeb
Project Number
5189901
Thanks
This study is supported by Turkish Aerospace Industries Inc.’s 1515 - The Scientific and Technological Research Council of Turkey (TÜBİTAK) Frontier R&D Laboratory Support Programme, Project# 5189901.
References
- [1] Cunningham JE, Monaghan PF, Brogan MT, and Cassidy SF. Modeling of preheating of flat panels prior to press forming, Compos. Part A Appl. Sci. Manuf., 1997; vol. 28, no. 1, pp. 17–24.
- [2] Suong DG, Stephen VH, Tsai W. Composite Materials Design and Applications. CRC PRESS, 2003.
- [3] Abbasi F, Elfaleh I, Mistou S, Zghal A, Fazzini M, & Djilali T. Experimental and numerical investigations of a thermoplastic composite (carbon/PPS) thermoforming. Structural Control and Health Monitoring, 18, May 2011; 769–780. https://doi.org/10.1002/stc
- [4] Muzzy JD, Kays AO. Thermoplastic vs. thermosetting structural composites, Polymer Composites, 1984; vol. 5, no. 1, pp. 69–172.
- [5] Cogswell FN, Thermoplastic Aromatic Polymers; Butterworth-Heinemann Ltd., Oxford, 1992; 124-139.
- [6] Friedrich K, Hou M, & Krebs J. Chapter 4 Thermoforming of continuous fibre/thermoplastic composite sheets. Composite Materials Series, 1997; 11(C), 91–162. https://doi.org/10.1016/S0927-0108(97)80006-9
- [7] Offringa AR. Thermoplastic applications composites-rapid processing applications, Compos. Part A, 1996; vol. 27(A), pp.329–336,
- [8] Dutch Thermoplastic Composites “Aerospace Structures,” http://www.composites.nl/ products/aerospace-structures/.
- [9] Saraiva F. Development of press forming techniques for thermoplastic composites Investigation of a multiple step forming approach, MSc Thesis in Aerospace Engineering Structural Integrity & Composites, TU Delft, 2017.
- [10] Chukov D, Nematulloev S., Zadorozhnyy M, Tcherdyntsev V, Stepashkin A & Zherebtsov D. Structure, mechanical and thermal properties of polyphenylene sulfide and polysulfone impregnated carbon fiber composites. Polymers, 2019; 11(4), 684.