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Atomic Oxygen Erosion Resistance Of Organic Polymers For Low Earth Orbit Spacecraft Microform
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Author :Grant Rheal Cool Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612354319 Total Pages : pages Book Rating :4.3/5 (543 download)
Book Synopsis Atomic Oxygen Erosion Resistance of Organic Polymers for Low Earth Orbit Spacecraft [microform] by : Grant Rheal Cool
Download or read book Atomic Oxygen Erosion Resistance of Organic Polymers for Low Earth Orbit Spacecraft [microform] written by Grant Rheal Cool and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Earth Orbital Atomic Oxygen and Ultraviolet Radiation Effects on Polymers by : Joyce A. Dever
Download or read book Low Earth Orbital Atomic Oxygen and Ultraviolet Radiation Effects on Polymers written by Joyce A. Dever and published by . This book was released on 1991 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and In-Situ Atomic Oxygen Erosion Studies of Space-Survivable Hybrid Organic/Inorganic Polyhedral Oligomeric Silsesquioxane Polymers by : Rene I. Gonzalez
Download or read book Synthesis and In-Situ Atomic Oxygen Erosion Studies of Space-Survivable Hybrid Organic/Inorganic Polyhedral Oligomeric Silsesquioxane Polymers written by Rene I. Gonzalez and published by . This book was released on 2002 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric materials offer many advantages for low Earth orbit applications including ease of processing and reduced payload-to-orbit costs derived from a reduction in weight. However, over the last two decades it has been well established that polymers used in the construction of space vehicles undergo severe degradation resulting in reduced spacecraft lifetimes. These materials degrade because spacecraft surfaces must endure a high atomic oxygen (AO) flux, bombardment by low and high-energy charged particles, and thermal cycling along with the full spectrum of solar radiation. Many studies have been conducted in an effort to determine the mechanism of degradation primarily caused by surface reactions with oxygen atoms. Unfortunately, these studies have all been carried out after exposing these highly reactive surfaces to air prior to analysis, thus introducing artifacts that do not represent the true effect of the space environment.
Book Synopsis Techniques for Measuring Low Earth Orbital Atomic Oxygen Erosion of Polymers by :
Download or read book Techniques for Measuring Low Earth Orbital Atomic Oxygen Erosion of Polymers written by and published by . This book was released on 2002 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Space Experiment to Measure the Atomic Oxygen Erosion of Polymers and Demonstrate a Technique to Identify Sources of Silicone Contamination by :
Download or read book A Space Experiment to Measure the Atomic Oxygen Erosion of Polymers and Demonstrate a Technique to Identify Sources of Silicone Contamination written by and published by . This book was released on 1999 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Issues and Consequences of Atomic Oxygen Undercutting of Protected Polymers in Low Earth Orbit by :
Download or read book Issues and Consequences of Atomic Oxygen Undercutting of Protected Polymers in Low Earth Orbit written by and published by . This book was released on 2002 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atomic Oxygen Durability Evaluation of Protected Polymers Using Thermal Energy Plasma Systems by :
Download or read book Atomic Oxygen Durability Evaluation of Protected Polymers Using Thermal Energy Plasma Systems written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of In-Space Durability of Protected Polymers Based on Ground Laboratory Thermal Energy Atomic Oxygen by :
Download or read book Prediction of In-Space Durability of Protected Polymers Based on Ground Laboratory Thermal Energy Atomic Oxygen written by and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multidisciplinary Oxygen Atom Erosion and Surface Characterization Studies of Polyhedral Oligomeric Silsesquioxane by :
Download or read book Multidisciplinary Oxygen Atom Erosion and Surface Characterization Studies of Polyhedral Oligomeric Silsesquioxane written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research project have been to characterize the degradation of various types of polymers under simulated space (low-earth orbit (LEO)) conditions and to develop polymers for spacecraft coatings which have improved survivability in LEO. Many polymers have been tested including kapton, polyethylene, fluoromers, polyhedral oligomeric silsequioxane (POSS)-containing copolymers and others. The testing was performed in an ultrahigh vacuum system which contained an atomic oxygen (AO) source and a vacuum ultraviolet (vuv) source. In some studies the polymers were also exposed to energetic electrons and ions. The chemical alterations occurring during the degradation was monitored using X-ray photoelectron spectroscopy (XPS). All polymers exhibit large chemical changes. The POSS-containing polymers are particularly interesting for space applications because they form a thin silica layer which protects the underlying polymer from further degradation.
Book Synopsis Environmental Degradation of Nano Enhanced Polymers in Low Earth Orbit by : Mohammed Jaradat
Download or read book Environmental Degradation of Nano Enhanced Polymers in Low Earth Orbit written by Mohammed Jaradat and published by . This book was released on 2014 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are widely used in space shuttles and systems due to the unique properties they possess. However, the extremely harsh conditions in the low earth orbit (LEO), which ranges from 200-1800 km above the earth, have a degrading effect on those polymers. The predominant component of the LEO atmosphere is Atomic Oxygen (AO), which is a single O atom formed through the dissociation of molecular oxygen by ultra violet radiation from the sun. AO particles collide with a kinetic energy of approximately 5 eV, this energy is enough to facilitate the degradation of most polymers. An organic/inorganic hybrid material approach is used in this study through the incorporation of polyhedral oligomeric silsesquixanes (POSS) into traditional polymer systems. Several materials with different POSS percentages and exposure times to oxygen plasma (glassification process) are considered for this research. Following a pre-testing process only selected specimens are sent to the atomic oxygen testing facility at Marshall Space and Flight Center to be tested and evaluated. The specimens were assessed using the dynamic mechanical analysis and atomic force microscopy techniques to characterize the surface and obtain different mechanical and physical properties. A computational approach in the form of Molecular Dynamics (MD) simulations are performed on a polyimide and polyimide/POSS systems and elastic properties are determined. The selected materials with higher POSS percentages generally performed better in terms of mass loss of the tested systems due to the rapid and more complete formation of an oxidized protective layer that significantly limits further degradation once it formed. The glassification process doesn't seem to improve the resistance against AO attacks greatly at such small exposure times, never the less a slight improvement is noticed.
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1995 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atomic Oxygen Erosion Yield Dependence Upon Texture Development in Polymers by : Bruce A. Banks
Download or read book Atomic Oxygen Erosion Yield Dependence Upon Texture Development in Polymers written by Bruce A. Banks and published by . This book was released on 2016 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reduced Atomic Oxygen Erosion of Polymers Due to Metal-based Additives by : Jennifer Lee Weisman
Download or read book Reduced Atomic Oxygen Erosion of Polymers Due to Metal-based Additives written by Jennifer Lee Weisman and published by . This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MISSE 2 PEACE polymers experiment atomic oxygen erosion yield error analysis by : Catherine E. McCarthy
Download or read book MISSE 2 PEACE polymers experiment atomic oxygen erosion yield error analysis written by Catherine E. McCarthy and published by . This book was released on 2010 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ground-laboratory to in-space atomic oxygen correlation for the Polymer Erosion and Contamination Experiment (PEACE) polymers by :
Download or read book Ground-laboratory to in-space atomic oxygen correlation for the Polymer Erosion and Contamination Experiment (PEACE) polymers written by and published by . This book was released on 2011 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Species Produced by Atomic Oxygen Impact on Polymer-Resin Materials Using a Mass Spectrometry Method by :
Download or read book Study of Species Produced by Atomic Oxygen Impact on Polymer-Resin Materials Using a Mass Spectrometry Method written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report results from a contract tasking CERT-ONERAIDERTS as follows: The contractor will investigate the effects of atomic oxygen (AO) on polymer-resin materials. Experimental conditions will simulate the AO environment of low-Earth orbit. Results will be analyzed for a completely neutral AO beam.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1995 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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