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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pneumatic impact ignition of selected polymers in high‐pressure oxygen environments
10.1002/fam.922.abs
One likely cause of polymer ignition in high‐pressure oxygen systems is adiabatic‐compression heating of polymers, caused by pneumatic impact. This study investigates ignition by pneumatic impact of selected polymers in high‐pressure oxygen environments. Six polymers commonly used in high‐pressure oxygen systems were tested in a pneumatic‐impact test system at 8.3–37.9 MPa oxygen pressures. The six polymers tested were Teflon®(polytetrafluoroethylene), Neoflon®(polychlorotrifluoroethylene), PEEK (polyetheretherketone), Zytel® 42 (Nylon 6/6), Buna N (nitrile rubber), and Viton® A (copolymer of vinylidene fluoride and hexafluoropropylene). This study shows that the ignition of polymers due to pneumatic impact could be initiated by a local heterogeneous reaction between the hot oxygen and the oxidation sites of the polymer, and proposes an ignition mechanism. Ignition susceptibility of a material to the pneumatic impact can be expressed by its ignition probability. The ignition probabilities of the six polymers at the various oxygen pressures are presented. There is no good correlation between the ignition probability and the autoignition temperature. Copyright © 2006 John Wiley & Sons, Ltd.
Pneumatic impact ignition of selected polymers in high‐pressure oxygen environments
10.1002/fam.922.abs
One likely cause of polymer ignition in high‐pressure oxygen systems is adiabatic‐compression heating of polymers, caused by pneumatic impact. This study investigates ignition by pneumatic impact of selected polymers in high‐pressure oxygen environments. Six polymers commonly used in high‐pressure oxygen systems were tested in a pneumatic‐impact test system at 8.3–37.9 MPa oxygen pressures. The six polymers tested were Teflon®(polytetrafluoroethylene), Neoflon®(polychlorotrifluoroethylene), PEEK (polyetheretherketone), Zytel® 42 (Nylon 6/6), Buna N (nitrile rubber), and Viton® A (copolymer of vinylidene fluoride and hexafluoropropylene). This study shows that the ignition of polymers due to pneumatic impact could be initiated by a local heterogeneous reaction between the hot oxygen and the oxidation sites of the polymer, and proposes an ignition mechanism. Ignition susceptibility of a material to the pneumatic impact can be expressed by its ignition probability. The ignition probabilities of the six polymers at the various oxygen pressures are presented. There is no good correlation between the ignition probability and the autoignition temperature. Copyright © 2006 John Wiley & Sons, Ltd.
Pneumatic impact ignition of selected polymers in high‐pressure oxygen environments
Hshieh, Fu‐Yu (Autor:in) / Williams, James H. (Autor:in)
Fire and Materials ; 31 ; 1-11
01.01.2007
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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