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Investigation of the thermal decomposition and flammability of PEEK and its carbon and glass-fibre composites

Authors:	Parina PatelT Richard Hull Richard E LyonStanislav I Stoliarov Richard N WaltersSean Crowley Natallia Safronava

Institution:	^a Centre for Fire and Hazards Science, School of Forensic and Investigative Science, University of Central Lancashire, Preston, PR1 2HE, UK ^b Fire Safety Branch, Federal Aviation Administration, William J. Hughes Technical Centre, Atlantic City International Airport, NJ 08405, USA ^c Department of Fire Protection Engineering, University of Maryland, MD 20742, USA ^d SRA International, Inc., 1201 New Road, Linwood, NJ 08211, USA

Abstract:	Conventional thermally durable materials such as metals are being replaced with heat resistant engineering polymers and their composites in applications where burn-through resistance and structural integrity after exposure to fire are required. Poly aryl ether ether ketone (PEEK) is one such engineering polymer. Little work has been published with regards to the flammability of PEEK and its filled composites. The current study aims to assess the flammability and fire behaviour of PEEK and its composites using thermogravimetric analysis, pyrolysis combustion flow calorimetry, limiting oxygen index, a vertical flame resistance test, and fire (cone) calorimetry.

Keywords:	Polyetheretherketone Fire calorimetry Thermal decomposition Flammability Pyrolysis Combustion Flow Calorimeter UL-94 Limiting oxygen index
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