3 edition of Effects of graphitization on the environmental stability of brominated pitch-based fibers found in the catalog.
Effects of graphitization on the environmental stability of brominated pitch-based fibers
James R. Gaier
by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va
Written in English
|Statement||James R. Gaier and Melissa E Slabe.|
|Series||NASA technical memorandum -- 88899.|
|Contributions||Slabe, Melissa E., United States. National Aeronautics and Space Administration.|
|The Physical Object|
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Get this from a library. Effects of graphitization on the environmental stability of brominated pitch-based fibers. [James R Gaier; Melissa E Slabe; United States. National Aeronautics and Space Administration.].
Effects of graphitization on the environmental stability of brominated pitch-based fibers [microform] / Environmental stability of intercalated graphite fibers [microform] / James R.
Gaier and Donald A. Jaworske; The milling of pristine and brominated P graphite fibers [microform] /. Environmental stability of intercalated graphite fibers [microform] / James R. Gaier and Donald A. Jaworske; Effects of graphitization on the environmental stability of brominated pitch-based fibers [microform] / Graphite fiber intercalation [microform]: dynamics of the bromine intercalation process /.
The microscopic bromine distribution in pitch-based brominated graphite fibers has been measured with a scanning transmission electron microscope by monitoring the Br K alpha1 X-ray intensity.
Synthetic fibers for general use cannot meet the requirements of commercial values. Modified fibers with functional properties, such as antibacterial fibers, UV-protection fibers, flame-retardant (FR) fibers, antistatistic fibers, and far infrared fibers are produced.
Two methods are used for their preparation: one is to change the shape of the fiber cross section or the fiber surface Cited by: 7. The kinetics was studied by thermogravimetric analysis of brominated Thornel P and P-X-7 carbon fibers of Amoco Corp., as P-X-7 was more graphitic than P Mesophase pitch-based carbon fibers have much higher oxidation resistance in carbon dioxide in comparison with isotropic pitch-based carbon fibers (Wang and Inagaki, ).
Compared with the untreated fibers, flame retardant treated cellulose fiber gives Cited by: 5. A Study of the Stabilization, Carbonization, and Graphitization of Mesophase Pitch-Based Carbon Fibers, Darren K. Rogers. PDF. A Study of the State-of-the-Art of Material Requirements Planning in Manufacturing Firms in South Carolina, Vanessa L.
Sturr. PDF. The presence of the matrix material provides the shear transfer between the fibers and this also provides good shear properties for the composite material. Protecting the Fibers from Environmental Attack Fibers such as carbon and glass usually have high surface energies.
Moisture can easily adsorb on the surface of these fibers. The fibers begin as an organic fiber, rayon, polyacrylonitrile or pitch which is called the precursor. The precursor is then stretched, oxidized, carbonized and graphitized. There are many ways to produce these fibers, but the relative amount of exposure at temperatures from C results in greater or less graphitization of the fiber.5/5(5).
Full text of "NASA Technical Reports Server (NTRS) Bibliography of Lewis Research Center Technical Publications announced in " See other formats. Bromine. USGS Publications Warehouse.
Ober, J.A. The element bromine is found principally as a dissolved species in seawater, evaporitic (salt) lakes and underground b. Contents Chemical Structure and Applications Cellulose Microfibrils Surface Modification of Plant Fibers Physical Treatments Physicochemical Treatments Chemical Modification of Plant Fibers Polyolefin Composites Processing of Polyolefin/Natural Fiber Composites Mechanical Properties of.
High-strength glass fibers such as S-glass fibers have 10%–15% higher strength than E-glass, but the real importance of these fibers is their stability at high temperatures.
The tensile strength of glass fibers is generally determined by the silicate network connectivity. In the present study we have examined the effects of brominated flame retardants (BFR) and several other environmental contaminants in two in vitro assays for intragenic recombination at an endogenous locus in mammalian cells.
A total ten compounds were investigated, i. e., two technical PCB mixtures (Aroclor and Aroclor ), DDT, PCP. Thermo-oxidative stability is also important, and is influenced by trace amounts of heavy metals (iron, magnesium, copper) in most carbonates and silicates. These also influence UV stability for outdoor applications.
Coating Coating is increasingly used to enhance the properties of fillers. One of the most widely used materials is stearic. Carbon nanotube-based polymer composites are poised to exhibit exceptional mechanical, thermal and electrical properties Of particular interest are polymer and organically modified layered silicate (OMLS) nanocomposites because of their demonstrated significant enhancement, relative to an unmodified polymer resin, of a large number of.
Materials, Their Properties and Uses. ABRASIVES. Mild abrasives, used in silver polishes and window-cleaning compounds, such as chalk and talc, have a Mohs hardness of 1 to 2.
The milder abrasives for dental pastes and powders may be precipitated calcium carbonate, tricalcium phosphate, or combinations of sodium metaphosphate and tricalcium. The bonding strength is about 10 lb/in2 ( MPa), or equivalent to the adhesive strength of the outer fibers of the leather to be bonded.
For hot-press lamination of wood, the plastic cement is sometimes marketed in the form of thin sheet. Polyvinyl acetate-crotonic acid copolymer resin is used as a hot-dip adhesive for book and magazine binding. Handbook of Materials Selection for Engineering Applications Mechanical Engineering (Marcel Dekker, Inc.) ; Murray, G.
CRC Press English Materials--Handbooks, manuals, etc. TAH37 eb /1 Materials--Handbooks, manuals, etc. Handbook of Materials Selection for Engineering Applications.