Download or read book Surface Characterization of Pan based Carbon Fibers Using XPS SIMS and AFM written by Kris Anne Battleson and published by . This book was released on 1998 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Low Thermal Conductivity Pan Based Carbon Fibers written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructure and surface chemistry of eight low thermal conductivity (LTC) PAN-based carbon fibers were determined and compared with PAN-based fibers heat treated to higher temperatures. Based on wide-angle x ray diffraction, the LTC PAN fibers all appear to have a similar turbostratic structure with large 002 d-spacings, small crystallite sizes, and moderate preferred orientation. Limited small-angle x ray scattering (SAXS) results indicate that, with the exception of LTC fibers made by BASF, the LTC fibers do not have well developed pores. Transmission electron microscopy shows that the texture of the two LTC PAN-based fibers studied (Amoco T350/23X and /25X) consists of multiple sets of parallel, wavy, bent layers that interweave with each other forming a complex three dimensional network oriented randomly around the fiber axis. X ray photoelectron spectroscopy (XPS) analysis finds correlations between heat treated temperatures and the surface composition chemistry of the carbon fiber samples. Katzman, Howard A. and Adams, P. M. and Le, T. D. and Hemminger, Carl S. Unspecified Center CARBON FIBERS; HEAT TREATMENT; HIGH TEMPERATURE; LOW CONDUCTIVITY; MATERIALS TESTS; MICROSTRUCTURE; POLYACRYLONITRILE; SURFACE PROPERTIES; THERMAL CONDUCTIVITY; CRYSTALLITES; ELECTRON MICROSCOPY; PHOTOELECTRON SPECTROSCOPY; POROSITY; TRANSMISSION ELECTRON MICROSCOPY; X RAY DIFFRACTION; X RAY SCATTERING; X RAY SPECTROSCOPY...
Download or read book Carbon Fibers written by Leighton H. Peebles and published by CRC Press. This book was released on 2018-01-18 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Fibers presents an up-to-date review of the progress pertaining to the formation of carbon fibers from rayon, acrylic, and pitch precursors. The book emphasizes the preparation, characterization, and properties of commercial materials. It also considers the compressive properties of carbon fibers, the lack of correlation between surface characterization and fiber-matrix interactions, and the discrepancy between surface composition as determined by XPS and the reaction of surface groups with chemical reagents. Other topics discussed include:
Download or read book Chemical Characterization of Pan Based Carbon Fibers Produced by Microwave Assisted Plasma MAP Technology and Effect of Plasma Treatment on Carbon Fiber Surface and Interphase with Polymer Matrix written by Xiaoyu Luo and published by . This book was released on 2006 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Characterization of Carbon Pitch and Pan Fibers Using Fractal Dimension Analysis written by Annette M. Wilkie and published by . This book was released on 1990 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Characterization of Carbon Fiber by Infrared Spectroscopy written by Takeshi Ohwaki and published by . This book was released on 1993 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book XPS ISS Characterization and the Adhesive Properties of Carbon Fibers Exposed to Oxygen Plasma written by Glyn Lamonica Booth and published by . This book was released on 1997 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book XPS ISS Characterization of Carbon Fibers for the Synthesis of Carbon Fiber epoxy Composites Containing an Elastomeric Interphase written by Chakravarthy Srinivasa Kalyana Singamsetty and published by . This book was released on 1995 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Studies of Carbon Fibers Related to Their Use in Carbon Carbon Composites written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface chemistry and topography of carbon fiber surfaces have been probed using a variety of surface analytical tools in order to understand the processes that effect the oxidation of carbon-carbon composites. Core and Valence Band X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and other techniques were used to monitor the surface chemistry and topography of carbon fibers, with and without oxidation protective coatings. A special high vacuum apparatus was built to study surface oxidation at elevated temperatures in a chamber directly attached to a surface spectrometer. The valence band XPS spectra were interpreted by calculations that modelled the fiber surface and interfacial chemistry. The results of the project provide a better understanding of the inter facial chemistry associated with carbon fiber surface oxidation and protection. Protective films for the outer surface of the composite, and coupling agents that improve the oxidation resistance of the carbon fiber-carbon matrix interface are reported. jg p.1.
Download or read book Surface Characterization of Carbon Fibers by Atomic Force Microscopy written by and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Characterization of Carbon Fibers and Interfacial Phenomena in Carbon Reinforced Composites written by Claudio Sellitti and published by . This book was released on 1990 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Commercial Carbon Fiber from Standard PAN Precursors and Low cost Carbon Fiber from Textile PAN Based Precursors written by Joshua David Crabtree and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is tremendous need to integrate carbon fiber composites for light-weighting in the transportation sector, especially for automotive composites and in energy generation space associated with wind turbine manufacturing. Tensile properties of carbon fibers are fundamental to designing fiber reinforced polymers and carbon/carbon composites. Carbon fiber suppliers typically follow general guidelines prescribed in the relevant standards (ASTM D4018) to prepare resin reinforced carbon fiber tows for determining the tensile properties. In this study, the effect of manufacturing process associated with carbon fiber tows was evaluated using two methods involving manual tensioned strands or using automated spool method. Important effects associated with fiber spacing, cross-sectional morphology of the infused tows are reported in this study. Single fiber mechanical properties are determined to obtain relationship from multiple length scales and the role of interfacial behavior between the carbon fiber and resin system using single fiber fragmentation. These results, for the first time, revealed important relationships between single fiber, interface, and infused tow based mechanical properties. A new concept for deformation response of infused tows, limit stress, demonstrated a connection in the nonlinearity nature of tensile modulus seen for carbon fibers in single fiber state and in tow format. Limit stress showed good representation of the relative role of relationships (interfacial behavior, crack propagation, and stress transfer) from limit stress to failure stress. Three low-cost precursors, oxidized PAN, and carbon fiber, from the Carbon Fiber Technology Facility with differences in spin finish and/or tenacity are studied in detail through various stages of oxidative stabilization and carbonization to develop improved understanding of the precursor properties and final textile PAN based carbon fiber properties. A systematic approach consisting of DSC, TGA, FT-IR, XRD, single fiber testing, and infused tow testing were considered in evaluating the process-structure-tensile property relationship for the three precursors. The results identified the role of spin finish and tenacity on the performance of low-cost carbon fiber. This part of the research provides an important conclusion that the carbon fiber manufacturing process using textile PAN precursors is industrially robust and is not strongly dependent on precursor tenacity or surface finish.
Download or read book XPS ISS Surface Analysis of Carbon Fibers Electrochemically Oxidized in Potassium Nitrate written by Syed Farrukh Waseem and published by . This book was released on 1997 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Surface Characterizations of High Strength Carbon Fibers written by Sin S. Lin and published by . This book was released on 1987 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six commercial carbon fibers are characterized by X ray diffraction, scanning electron microscopy (SEM) and X ray photoelectron spectroscopy (XPS), or Electron Spectroscopy for Chemical Analysis (ESCA). Physical, structural, and surface parameters required to describe major properties of carbon fibers are examined and discussed. The correlation of these parameters is essential for developing optimizing and desired carbon composite materials. Keywords: Carbon fibers, Surface characterization, Structure characterization, X ray diffraction, ESCA analyses.
Download or read book New Trends and Potentialities of ToF SIMS in Surface Studies written by Jacek Grams and published by Nova Publishers. This book was released on 2007 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest trends and applications of time-of-flight secondary ion mass spectrometry (ToF-SIMS). It includes research and applications of the new primary ion guns. It also describes new possibilities of mass spectrometers and instrumentation development.
Download or read book Carbon Filaments and Nanotubes Common Origins Differing Applications written by L.P. Biró and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon filament, vapor grown carbon fibers and carbon nanotubes have been discovered to have remarkable properties, opening they way for their use in intriguing and novel applications in electronics, chemistry and materials science. There are many similarities between nanotubes and filaments, leading many researchers to critically compare the two materials, their production, and potential applications. The two materials are compared and contrasted in depth in the present book, which is a comprehensive review of current research activity, growth mechanisms, physical properties, industrial production, and applications. The structures are discussed using a unified approach, which helps to compare growth mechanisms, contrasting morphological differences, and detailing how novel properties depend on such differences.
Download or read book Powders and Fibers written by Michel Nardin and published by CRC Press. This book was released on 2006-12-21 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: New analytical methods have provided further insight into the structure, surface characteristics, and chemistries of increasingly small particles. However, current literature offers information on only a limited number of powders being investigated. Written by renowned scientists in the field, Powders and Fibers: Interfacial Science and Application
