Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A further study of factors affecting pneumatic‐impact ignition of polymers
10.1002/fam.921.abs
One likely cause of polymer ignition in high‐pressure oxygen systems is the adiabatic‐compression heating of polymers caused by pneumatic impact. The previous study showed that pneumatic‐impact ignition of polymers could be initiated by a local heterogeneous reaction between the hot oxygen and the oxidation sites of the polymer. This study further investigates other factors that cause pneumatic‐impact ignition of polymers in high‐pressure oxygen. Because the oxygen concentration has a significant effect on pneumatic‐impact ignition, threshold oxygen concentrations for pneumatic‐impact ignition of six selected polymers were determined at 20.7 MPa (3000 psia), an expected service pressure in high‐pressure oxygen systems. The six polymers investigated were: Teflon PTFE (polytetrafluoroethylene), Neoflon CTFE (polychlorotrifluoroethylene), PEEK (polyetheretherketone), Zytel 42 (nylon 6/6), Buna N (acrylonitrile butadiene rubber), and Viton A (copolymer of vinylidene fluoride and hexafluoropropylene). The results show that PEEK exhibited the highest threshold oxygen concentration (65%) and Zytel 42 exhibited the lowest threshold oxygen concentration (<21%). Copyright © 2006 John Wiley & Sons, Ltd.
A further study of factors affecting pneumatic‐impact ignition of polymers
10.1002/fam.921.abs
One likely cause of polymer ignition in high‐pressure oxygen systems is the adiabatic‐compression heating of polymers caused by pneumatic impact. The previous study showed that pneumatic‐impact ignition of polymers could be initiated by a local heterogeneous reaction between the hot oxygen and the oxidation sites of the polymer. This study further investigates other factors that cause pneumatic‐impact ignition of polymers in high‐pressure oxygen. Because the oxygen concentration has a significant effect on pneumatic‐impact ignition, threshold oxygen concentrations for pneumatic‐impact ignition of six selected polymers were determined at 20.7 MPa (3000 psia), an expected service pressure in high‐pressure oxygen systems. The six polymers investigated were: Teflon PTFE (polytetrafluoroethylene), Neoflon CTFE (polychlorotrifluoroethylene), PEEK (polyetheretherketone), Zytel 42 (nylon 6/6), Buna N (acrylonitrile butadiene rubber), and Viton A (copolymer of vinylidene fluoride and hexafluoropropylene). The results show that PEEK exhibited the highest threshold oxygen concentration (65%) and Zytel 42 exhibited the lowest threshold oxygen concentration (<21%). Copyright © 2006 John Wiley & Sons, Ltd.
A further study of factors affecting pneumatic‐impact ignition of polymers
Hshieh, Fu‐Yu (Autor:in) / Williams, James H. (Autor:in)
Fire and Materials ; 30 ; 425-437
01.11.2006
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A further study of factors affecting pneumatic-impact ignition of polymers
| British Library Online Contents | 2006
A further study of factors affecting pneumatic-impact ignition of polymers
| Online Contents | 2006
Pneumatic impact ignition of selected polymers in high-pressure oxygen environments
| Online Contents | 2007
Pneumatic impact ignition of selected polymers in high-pressure oxygen environments
| British Library Online Contents | 2007