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Flight Validation Of Atomic Oxygen Resistant Resistant Polymers
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781724011312 Total Pages :30 pages Book Rating :4.0/5 (113 download)
Book Synopsis Flight Validation of Atomic Oxygen Resistant Resistant Polymers by : National Aeronautics and Space Adm Nasa
Download or read book Flight Validation of Atomic Oxygen Resistant Resistant Polymers written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its high reactivity, atomic oxygen causes surface erosion on polymeric materials. although the reaction efficiency depends on the chemical structure of the polymer. We have found an organotin compound, bis(triphenyltin) oxide (BTO), which has an unusually high solubility in solutions of a number of commercial high performance polymers. Films of these polymers containing BTO showed a substantial reduction in erosion by atomic oxygen when compared with films of the pure material. Analysis has shown that in the presence of atomic oxygen, erosion of the exposed surfaces of the BTO-containing films leaves a residual protective tin oxide coating . Since the additive is uniformly distributed throughout the polymeric material, any break or puncture in the protective coating is "healed" by the material below. Samples were exposed to the environment of the low earth orbit (LEO) on two Space Shuttle flights, STS-46, in June of 1992, and STS-51 in September of 1993. The analysis of these samples has been reported previously. For both flights, the samples were small (1.3 cm and 1.9 cm respectively) thus limiting the scope of analysis. In the research under this cooperative agreement, films of a polyetherimide, were exposed to the LEO environment on Space Shuttle flight STS-85 in August of 1997 as part of the Evaluation of Space Environment and Effects on Materials (ESEM) experiment. The polyetherimide chosen is available commercially as Ultem, registered to the General Electric Company. Films of pure Ultem, Ultem with 10% BTO by mass, and Ultem with 20% BTO by mass were exposed in the ram direction for 40 hours during STS-85. Ultem has a Tg of 215 deg C and is soluble in common chlorinated solvents. Granules of the polymer were dried at 120 deg C, but otherwise were used as received. Films were cast on a glass plate from a solution of the polymer in a 60/40 (w/w) mixture of chloroform and 1,1,2,2-tetrachloroethane. The plate was placed in a dust-free box for
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 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 Correlation of Laboratory and Flight Data for the Effects of Atomic Oxygen on Polymeric Materials by : P. W. Knopf
Download or read book Correlation of Laboratory and Flight Data for the Effects of Atomic Oxygen on Polymeric Materials written by P. W. Knopf and published by . This book was released on 1985 with total page 11 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 602 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.
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:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Protection of Materials and Structures from the Low Earth Orbit Space Environment by : J. Kleiman
Download or read book Protection of Materials and Structures from the Low Earth Orbit Space Environment written by J. Kleiman and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents the proceedings of ICPMSE-3, the third international conference on Protection of Materials and Structures from the Low Earth Orbit Space Environment, held in Toronto April 25-26, 1996. The conference was hosted and organized by Integrity Testing Laboratory Inc, (ITL), and held at the University of Toronto's Institute for Aerospace Studies (UTIAS), where ITL is located. Twenty industrial companies, seven wliversities and eight government agencies from Canada, USA, United Kingdom, France, Israel, Russia, Ukraine and the Netherlands were represented by over 55 participants indicating increasing international co-operation in this critical arena of protection of materials in space. Twenty-five speakers, world experts in their fields, delivered talks on a wide variety of topics on various aspects of material protection in space, Representatives from the Canadian, American, European and Israeli space agencies as well as from leading space research laboratories of major aerospace industries gathered at UTIAS to discuss the latest developments in the field of material and structure protection from the harsh space environment, These proceedings are organized into four sections: a) AONOV and Radiation Effects on Materials and Structures in the Leo Space Environment; b) Interaction of Matter with the LEO Environment; c) Large Scale Coating Process Developments for Protection in LEO; d) Synthesis and Modification of Materials and Surfaces for Protection in LEO, This is the third in our on-going series of bi-annual international space materials conferences wllich began in 1992 in Toronto. Jacob Kleiman, Integrity Testing Laboratory Inc.
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 Technology for Large Space Systems by :
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Book Synopsis Evolving and Revolutionary Technologies for the New Millennium by : Leslie Jay Cohen
Download or read book Evolving and Revolutionary Technologies for the New Millennium written by Leslie Jay Cohen and published by . This book was released on 1999 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Performance Plastics 2005 written by and published by iSmithers Rapra Publishing. This book was released on 2005 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: High performance plastics are replacing traditional materials in hostile environments. They possess characteristics such as exceptional strength, lightweight, temperature resistance (usually in excess of 160°C), chemical resistance and dimensional stability. In addition, plastics are relatively easy to process and can be coloured (or transparent) and moulded to create innovative and attractive structures. The fun car market illustrates the increasing use of plastics materials and the versatility and appeal needed in materials for today's marketplace. This two day international conference brought together experts discussing the latest developments in materials including properties, processing and applications.There are many different types of high performance elastomers. Their unique properties are essential in hostile environments and application areas include the petrochemical and refining industries, automotive, aerospace, defence, wire and cable, construction, chemical plants, nuclear, medical, food and seals. Correct material selection, compounding and processing are essential. These proceedings have brought together a collection of papers for material suppliers, engineers, compounders, manufacturers, processors and end-users of high performance elastomers who discussed the most appropriate materials and formulations for different applications.
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Book Synopsis Large Space Structures & Systems in the Space Station Era by :
Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1990 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies Publisher : ISBN 13 : Total Pages :930 pages Book Rating :4.F/5 ( download)
Book Synopsis Departments of Veterans Affairs and Housing and Urban Development, and Independent Agencies Appropriations for 1994 by : United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies
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