Polyetheretherketone (PEEK) Composites Reinforced with Fly Ash and Mica
- 1 Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering & Technology, Bhubaneswar- 751 024, India.
- 2 Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering & Technology, Bhubaneswar- 751 024, India.
- 3 Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering & Technology, Bhubaneswar- 751 024, India.
- 4 Department of Polymer Engineering and Technology, University Institute of Chemical Technology, Matunga, Mumbai -400 019, India.
Abstract
Polyetheretherketone (PEEK) composites were developed using fly ash and mica as fillers. PEEK composites of 5-30 wt% loading were compounded using twin screw extruder. Tensile strength, tensile modulus and flexural modulus increased with the incorporation of both the fillers in PEEK matrix. Tensile modulus of PEEK fly ash composites was found to be higher than PEEK mica composites. Charpy impact strength of PEEK mica composites improved drastically up to 15 wt% of filler but in PEEK fly ash composites charpy impact strength was decreased. The effect of fly ash and mica on the percentage crystallinity of PEEK composites was studied by using modulated differential scanning calorimeter (MDSC). Limiting oxygen index (LOI) of PEEK fly ash and mica composites also improved by 11% and 24% respectively than pure PEEK at 30 wt% loading respectively. The dynamic modulus of PEEK composites shows over 133% increment at 100-250 °C, indicating improvement of elevated temperature mechanical properties. Effects of filler on the morphology of PEEK composites have also been discussed.
- Selley, J., 1988, Encyclopedia of polymer science and engineering, Vol.1, Wiley, New York, pp. 816 – 954.
- Leidner, J., Woodhams, R. T., 1974, “The strength of polymeric composites containing spherical fillers.” J. Appl Polym. Sci, Vol. 18, pp. 1639–1654.
- George, W., 1999, Mica, Handbook of Fillers, Vol. 1, ed. 2, , Toronto, New York, Chem Tech Publishing, pp. 112 – 115.
- Goyal, R. K., Tiwari, A. N., Negi, Y. S., 2005, “Preparation of high performance composites based on AlN/poly(ether ether ketone) and their properties” Eur. Polym. J.,Vol. 41, pp. 2034–2044.
- Goyal, R. K., Tiwari, A. N., Negi. Y. S., 2007, “Dynamic mechanical properties of Al 2 O 3 /poly(ether ether ketone) composites” J. Appl Polym. Sci, Vol. 104, pp. 568 – 575.
- Sarajaadevi, M., Murugesan, V., Rengaraj, K., Anamd, P., 1998, “Utilization of flyash as filler for unsaturated polyester resin” J. Appl Polym. Sci, Vol. 69, pp. 1385 – 1391.
- Katz, H.S., Milevski, J.V., 1978, Handbook of Fillers and Reinforcements for Plastics, Vol.1, ed.1, Van Notrand Reinhold, New York, pp. 333 – 457 .
- Sheppherd, P. D., Golemba, F.J., Maine, F.W., 1978, In Handbook of fillers and Reinforcement for plastic, Van Nostrond Reinhold, New York. pp. 281 – 342.
- Nielsen, L.E., 1974, Mechanical properties of polymers and composites, vol. 1, Marcel Dekker, New York. pp. 254 – 385.
- Zhou B, Ji.X., Sheng, Y., Wang, L., Jiang, Z., 2004, “Mechanical and thermal properties of poly(ether ether ketone) reinforced with CaCO 3 ” Eur. Polym J., Vol. 40, pp. 2357 – 2363.
- Guhanathan, S., Saaraja, Devi. M., 2004, “Studies on interface in polyester/fly-ash particulate composites” J Composite Interfaces, Vol. 11, pp. 43 – 66.
- Molcolm, P. Stevens., 1990, Polymer chemistry an introduction, Ed. 2, , Oxford university press, New York, pp. 174 – 75.
- Ostberg, G. M. K., Seferis, J. C., 1987, “Annealing effects on the crystallinity of polyetheretherketone (PEEK)”J of Appl. Polym. Sci., Vol. 33, pp. 29 – 39.
- Baker, M.S.A., Cheang, P., Khor, K.A., 1999, “Thermal processing of hydroxyapatite reinforced poly(ether ether ketone) composites” J. Mater Process Technol., Vol. 89–90, pp. 462–466.
- Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., “Effect of AlN on thermo mechanical properties of high performance poly(ether ether ketone)” J. Composites Part A, in press.