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Test System To Study The Ignition Of Metals By Polymers In Oxygen
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Book Synopsis Test System to Study the Ignition of Metals by Polymers in Oxygen by : J. Stoltzfus
Download or read book Test System to Study the Ignition of Metals by Polymers in Oxygen written by J. Stoltzfus and published by . This book was released on 2000 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new test system that uses laser energy to ignite a polymer promoter has been developed at the NASA White Sands Test Facility (WSTF). It will facilitate the study of kindling chain ignition, such as the spread of fire from a burning polymer material to surrounding metal. The test system can be used to answer questions regarding configurational effects on ignition and combustion.
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Theodore Aaron Steinberg
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Theodore Aaron Steinberg and published by ASTM International. This book was released on 2000 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of Polymers as Ignition Sources During Particle Impact in Oxygen by : J. Dees
Download or read book An Evaluation of Polymers as Ignition Sources During Particle Impact in Oxygen written by J. Dees and published by . This book was released on 1995 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: When contaminant particles are present in oxygen systems they can be entrained in the flowing oxygen and collide with system components causing ignition and burning. This particle impact ignition mechanism has been the cause of many fires in oxygen systems and has been systematically studied in the laboratory. For the laboratory studies, materials for particles and targets are generally classified into three groups: metals, oxides (inert), and polymers. Of the three groups, metallic particles and targets have been tested most frequently. Oxide (inert) particles and targets have been studied occasionally. Polymers, however, have not been systematically studied either as particles or as targets.
Book Synopsis Ignition Resistance of Polymeric Materials to Particle Impact in High-Pressure Oxygen by : JM. Stoltzfus
Download or read book Ignition Resistance of Polymeric Materials to Particle Impact in High-Pressure Oxygen written by JM. Stoltzfus and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle impact ignition has been the primary cause of numerous fires in oxygen systems. This ignition phenomenon is known to occur where particles are present in high-velocity gas and where impact occurs on a flammable material. The particle impact ignition behavior of many metals has been widely studied, but the particle impact ignition behavior of polymeric materials is relatively unknown. Particle impact ignition in polymeric materials is a concern because these materials are commonly used in component seat and seal applications where high-velocity particle impacts can occur. This study evaluates several polymeric materials and compares the threshold temperature, which is the minimum temperature required for ignition, of these materials: Kel-F 81® (CTFE), Teflon® (TFE), polyetheretherketone (PEEK), and Vespel SP-1®(polyimide). The materials were configured as targets in the high-velocity particle impact test system at the NASA White Sands Test Facility. Gaseous oxygen was flowed at 27.5 MPa (4000 psig) and sonic velocity, and the targets were impacted with 2000-?m (0.078-in.) aluminum 2017 particles. This paper discusses the results of these tests and ranks the materials according to their threshold temperatures at these conditions.
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : Dwight D. Janoff
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by Dwight D. Janoff and published by ASTM International. This book was released on 1995 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Test Developments for Polymers in Oxygen-Enriched Environments by : F. Benz
Download or read book Test Developments for Polymers in Oxygen-Enriched Environments written by F. Benz and published by . This book was released on 1991 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two newly developed methods are discussed that examine ignition and flammability characteristics of polymers in oxygen-enriched environments. These methods were tested with three types of polymers (acrylonitrile butadiene, high-density polyethylene, and polytetrafluoroethylene). The first method comprises a tube furnace assembly and a quartz tube through which a test gas is flowed over a polymer sample located in a combustion boat. The combustion gas flowing through the infrared test cell is analyzed for pyrolysis products using a Fourier transform infrared (FTIR) spectrometer. By measuring the spectral characteristics of the reactant products (spectral absorption bands) as a function of the sample temperature, it is possible to determine some of the pyrolysis properties of the materials. Inspection of the sample while the temperature increases is made possible by viewing the sample through an oblique field-of-view angle to the quartz sampling tube. The sample is monitored visually or recorded with a video camera. Visual monitoring for flame emissions allows for positive identification of the auto-ignition temperature (AIT). With the exception of the high-density polyethylene, the AIT results were in good agreement with previously published values. The FTIR spectrometer was demonstrated to be extremely sensitive for characterizing the compatibility of polymer materials with oxygen. The second method discussed is a modification to a Differential Scanning Calorimeter (DSC). This device, which utilizes a silicon photodiode coupled to the DSC chamber via a light pipe assembly, is used to detect radiative flame emissions from a polymer test sample, The modification provides a method of identifying the AIT threshold, while simultaneously measuring endothermic and exothermic responses. The photodiode detector assembly has been adapted for use with the high-pressure DSC cell configuration. The visible wavelength bandpass of the silicon photodiode has a weak response to the radiation heat of the sample or DSC chamber for temperatures under 500 K. Thus, flames with temperatures in excess of 500 K are easily distinguished from the radiative response of the chamber or slow reaction rates (no visible flame emissions). The testing of the DSC demonstrated the merit of using the radiative flame emissions as the primary signature for the identification of the auto-ignition condition. The method reduces or eliminates ambiguity associated with interpretation of exothermic reactions. Thus, the new instrumentation provides viable methods of determining the AIT for polymers in oxygen-enriched environments.
Book Synopsis Safe Use of Oxygen and Oxygen Systems by :
Download or read book Safe Use of Oxygen and Oxygen Systems written by and published by ASTM International. This book was released on with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres by : B. E. Newton
Download or read book Flammability and Sensitivity of Materials in Oxygen-enriched Atmospheres written by B. E. Newton and published by ASTM International. This book was released on 2003 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Promoted Combustion Testing of Pure and Ceramic-Coated Metals in High Pressure Oxygen by the Federal Institute of Materials Research and Testing (BAM) by : C. Binder
Download or read book Promoted Combustion Testing of Pure and Ceramic-Coated Metals in High Pressure Oxygen by the Federal Institute of Materials Research and Testing (BAM) written by C. Binder and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new promoted ignition combustion test apparatus at BAM matches the requirements of ASTM test method G 124 [ASTM G 124, Standard Test Method for Determining the Combustion Behavior of Metallic Materials in Oxygen-Enriched Atmospheres, 2003] and of EIGA publication, IGC Doc 13/02/E [EIGA Gas Association Document IGC Doc 13/02/E, Oxygen Pipeline Systems, 2003]. The test apparatus is most likely the only one in Europe. The test chamber allows investigations with pure oxygen or oxygen mixtures at pressures up to 500 bar and at temperatures up to 400°C at static or flowing gas conditions. The ignition device consists of an electrical ignition wire and a promoter. IR-sensors, distributed over the whole length of the rod, measure and record the burning temperature and allow measurement of the burn rate. A video system records the experiment for visual characterization of the burning behavior. BAM test results are compared with published data. Results on investigations with coated rods are presented. Ceramic coatings seem to be a solution for the use of certain less compatible metallic materials at higher oxygen pressures.
Book Synopsis Publications by : United States. National Bureau of Standards
Download or read book Publications written by United States. National Bureau of Standards and published by . This book was released on 1982 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 92-3400 - 92-3429 written by and published by . This book was released on 1992 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference Proceedings written by and published by Taylor & Francis. This book was released on with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Institute of Standards and Technology ... Catalog by : National Institute of Standards and Technology (U.S.)
Download or read book Publications of the National Institute of Standards and Technology ... Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1987 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Bureau of Standards ... Catalog by : United States. National Bureau of Standards
Download or read book Publications of the National Bureau of Standards ... Catalog written by United States. National Bureau of Standards and published by . This book was released on 1981 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Bureau of Standards, 1986 Catalog by : United States. National Bureau of Standards
Download or read book Publications of the National Bureau of Standards, 1986 Catalog written by United States. National Bureau of Standards and published by . This book was released on 1987 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
