Abstract
Fiber-reinforced plastic sheets containing unsaturated polyester cross-linked with styrene, CaCO3 and glass fibers as fillers were pyrolyzed in a helium and steam atmosphere in order to recover glass fibers and valuable organic pyrolysis products. Glass fibers were separated from CaCO3 and CaO by dissolving calcium salts in hydrochloric acid. Residual organic material was burnt afterwards. Best results were obtained at a pyrolysis temperature of 600 and 700 °C, resulting in a large liquid fraction high in styrene, leaving little residual organic material on the surface of the glass fibers. At a pyrolysis temperature of 500 °C, the degradation of the polymer matrix was incomplete, and at 900 °C, glass fibers were destroyed in the presence of CaO, leaving CaSiO3 as a product.
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References
Vaidya UK, Chawla KK (2008) Processing of fibre reinforced thermoplastic composites. Int Mater Rev 53:185–218
Kouparitsas CE, Kartalis CN, Varelidis PC, Tsenoglou CJ, Papaspyrides CD (2002) Recycling of the fibrous fraction of reinforced thermoset composites. Polym Compos 23:682–689
Evans SJ, Haines PJ, Skinner GA (2000) Pyrolysis-gas-chromatographic study of a series of polyester thermosets. J Anal Appl Pyrolysis 55:13–28
Marshall GL (1982) Pyrolysis-mass spectrometry of polymers—I. Unsaturated polyesters based on maleic anhydride. Eur Polym J 18:53–60
Evans SJ, Haines PJ, Skinner GA (1997) The thermal degradation of polyester resins II. The effects of cure and of fillers on degradation. Thermochim Acta 291:43–49
Cunliffe AM, Jones N, Williams PT (2003) Recycling of fibre-reinforced polymeric waste by pyrolysis: thermo-gravimetric and bench-scale investigations. J Anal Appl Pyrolysis 70:315–338
Cunliffe AM, Williams PT (2003) Characterisation of products from the recycling of glass fibre reinforced polyester waste by pyrolysis. Fuel 82:2223–2230
Williams PT, Cunliffe AM, Jones N (2005) Recovery of value-added products from the pyrolytic recycling of glass-fibre-reinforced composite plastic waste. J Energy Inst 78:51–61
Torres A, de Marco I, Caballero BM, Laresgoiti MF, Cabrero MA, Chomón MJ (2001) GC–MS analysis of the liquid products obtained in the pyrolysis of fibre-glass polyester sheet moulding compound. J Anal Appl Pyrolysis 58–59:189–203
Torres A, De Marco I, Caballero BM, Laresgoiti MF, Chomón MJ, Kondra G (2009) Recycling of the solid residue obtained from the pyrolysis of fiberglass polyester sheet molding compound. Adv Polym Tech 28:141–149
de Marco I, Legarreta JA, Laresgoiti MF, Torres A, Cambra JF, Chomón MJ, Caballero B, Gondra K (1997) Recycling of the products obtained in the pyrolysis of fibre-glass polyester SMC. J Chem Technol Biotechnol 69:187–192
Grause G, Kaminsky W, Fahrbach G (2004) Hydrolysis of poly(ethylene terephthalate) in a fluidised bed reactor. Polym Degrad Stab 85:571–575
Yoshioka T, Grause G, Eger C, Kaminsky W, Okuwaki A (2004) Pyrolysis of poly(ethylene terephthalate) in a fluidised bed plant. Polym Degrad Stab 86:499–504
Jorgensen AD, Picel KC, Stamoudis VC (1990) Prediction of gas chromatography flame ionization detector response factors from molecular structures. Anal Chem 62:683–689
Acknowledgments
This research was partially supported by the Ministry of Education, Science, Sports, and Culture, through a Grand-in-Aid for Scientific Research (A), 30241532, 2009.
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Grause, G., Mochizuki, T., Kameda, T. et al. Recovery of glass fibers from glass fiber reinforced plastics by pyrolysis. J Mater Cycles Waste Manag 15, 122–128 (2013). https://doi.org/10.1007/s10163-012-0101-x
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DOI: https://doi.org/10.1007/s10163-012-0101-x