solid particle erosion processes in thermoset and thermoplastic composite materials and polyurethane coatings

solid particle erosion of polyurethane coatings of various composition and tensile modulus on e glass epoxy substrate and of uncoated composite materials of polyethylene terephthalate (pet) containing t-300 carbon fibers and e glass fibers have been investigated utilizing natural mediterranean sea sand. effects of impact angle (30 to 90) ..

graphite fiber surface treatments

the objective of this program was the development of new and improved surface treatments for graphite fibers in order to provide optimum bonding to structural resins. experiments conducted with fortafil 5-y, a polyacrylonitrile based graphite yarn, demonstrated that short time exposures to liquid systems containing a strong oxidizing agen..

plastic foam coating: processes, formulations, and applications 1975-june, 1983 (citations from the rubber and plastics research association data base)

this bibliography contains citations concerning foam coating technology. equipment and processes for applying foam coatings for such applications as packaging, roof construction, foam lined fabrics, marine structures, and automobile parts are examined. latex, urethane, and vinyl foams are emphasized for such considerations as corrosion re..

effect of exercise on delayed cadiotoxic potential of adriamycin (nsc 123127) in rhesus monkeys - volume 1

this report describes the results of a study designed to evaluate in rhesus monkeys the potential for adriamycin to induce cardiomyopathies following treatment and to evaluate the influence of exercise on development of this syndrome. development of myocardial dysfunction was detected by evaluation of parameters obtained from echocardiogr..

substrates for biotechnology and other products from lignocelluloses by steam pressure treatment combined with gretraction

wood chips from birch, beech, and oak as well as chopped annual plants like cereal straw, bagasse, and elephant (napier) grass were treated with saturated steam at temperatures between 170 and 190 exp 0 c for 5 to 80 minutes, fiberized in the hot stage by expansion or in a refiner, and the obtained fiber materials were extracted with hot ..

laser-interferometer position-feedback for precision machine tools

diamond turning of off-axis parabolic mirrors is used to provide high-quality turning and focusing optics for the los alamos scientific laboratory's laser-fusion research. these mirrors are fabricated at the oak ridge y-12 plant on a large machine tool that incorporates lasers, air bearings, and linear-motor slide-drives to meet the part ..

process development for silicon carbide based structural ceramics

the objective of this program is to develop a process for making shaped silicon carbide based ceramic materials with reduced microstructural flaw size by in situ reaction of silicon with fine, ultra-uniform pored carbon skeletons that are produced from liquid polymer solutions without particulate additions. a very uniform siliconized micr..

developing strategies for alternative liquid fuels. volume iii

factors affecting development of alcohol fuels are described including: plant size, engineering and construction, raw material selection, cooking, fermentation, distillation, by-products, chemical testing, enzyme comparison, energy balance, marketing, production costs, and health and safety. the design and fabrication of a 600 gallon per ..

scanning-electron-microscopy study of argon-plasma-treated and untreated peel-test kevlar 49/epoxy laminates

it is concluded that a 200-watt rf argon plasma treatment of kevlar fibers for four minutes increases the fiber/epoxy interfacial bonding. however, as a consequence of this increase in fiber-matrix bonding, the fiber is readily fibrillated during laminate deformation and failure. (era citation 08:010304)

chemistry of glass-ceramic/metal bonding for header applications. i effect of treatments on inconel 718 and hastelloy c-276 metallic surfaces

glass-ceramic headers usually consist of a high-tensile-strength shell, one or several metal rings and/or pins which act as electrical feedthroughs, and a glass-ceramic electrical insulator. in recent headers, the glass-ceramic to metal seals have been fabricated using a lithia-alumina-silica glass and either inconel 718 or hastelloy c-27..