Journal ArticleDOI
Thermal degradation of poly(aryl‐ether‐ether‐ketone): Experimental evaluation of crosslinking reactions
M. Day,D. Sally,D. M. Wiles +2 more
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TLDR
In this article, it was shown that in a nonoxidative environment such as nitrogen, PEEK is relatively stable at 400°C for periods up to 6 h under oxidative conditions and chain scission reactions occur and crosslinks are formed causing a reduction in the crystallizability of the material and discoloration of the polymer.Abstract:
Poly(aryl-ether-ether-ketone) (PEEK) has been heated at 400°C in both nitrogen and air. The extent of thermal degradation has been monitored by a variety of techniques including: solution viscometry, UV-visible spectroscopy, 13C high-resolution cross-polarization/magic angle spinning nuclear magnetic resonance and Fourier transform infrared spectroscopy. The results indicate, that in a nonoxidative environment such as nitrogen, PEEK is relatively stable at 400°C for periods up to 6 h. Under oxidative conditions chain scission reactions occur and crosslinks are formed causing a reduction in the crystallizability of the material and discoloration of the polymer. The spectroscopic evidence suggests that the chain cleavage occurs adjacent to the carbonyl functional groups. Subsequent hydrogen abstraction from the aromatic ring then leads to crosslinking between adjacent aryl rings.read more
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Journal ArticleDOI
Mechanism of thermal decomposition of poly(ether ether ketone) (PEEK) from a review of decomposition studies
TL;DR: A review of the literature on the flammability and decomposition of poly(oxy-1,4-phenylene) is presented in this paper, where mechanisms have been suggested which attempt to explain the products formed at each stage of PEEK decomposition.
Journal ArticleDOI
High-performance nanocomposites based on polyetherketones
TL;DR: An extensive overview of the research on PEK-based nanocomposites with a special emphasis on both carbonbased nanofillers, such as nanotubes or nanofibers, and inorganic nanoparticles is provided in this article.
Journal ArticleDOI
Investigation of the thermal decomposition and flammability of PEEK and its carbon and glass-fibre composites
Parina Patel,T. Richard Hull,Richard E. Lyon,Stanislav I. Stoliarov,Richard N. Walters,Sean Crowley,Natallia Safronava +6 more
TL;DR: In this paper, the authors assess the flammability and fire behavior of PEEK and its composites using thermogravimetric analysis, pyrolysis combustion flow calorimetry, limiting oxygen index, a vertical flame resistance test, and fire (cone) calorimate.
Journal ArticleDOI
Modeling of Heat Transfer and Crystallization in Thermoplastic Composite Tape Placement Process
Fazil O. Sonmez,H. Thomas Hahn +1 more
TL;DR: In this article, a heat transfer analysis is coupled with a crystallization kinetics model to predict the resulting morphology of thermoplastic composites during the tape placement process, and the heat intensity that could be applied to the laminate is added to provide an upper bound for the heat input.
Journal ArticleDOI
Synthesis and Modification of Poly(ether ether ketone) and their Properties: A Review
TL;DR: In this article, a review of different synthetic and modification procedure, the characterization technique applied on PEEK, morphological and related properties are also described, considering the wide range of properties of PEEK polymers, a variety of structurally modified polymers are also reported.
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The thermal stability of poly(aryl-ether–ether-ketone) as assessed by thermogravimetry†
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