Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Single point determination of intrinsic viscosity saves considerable amount of time, effort and materials. Quite a few equations are available in the literature which require relative viscosity of the polymer solution at a single concentration for calculation of [η]. A comparative assessment of the applicabil…
Samples of high-chromium cast iron and high-carbon steel grinding balls were subjected to jet slurry impingement in an electrochemically instrumented apparatus. The jet velocity was 6.6 m/s. Quartz and chalcopyrite slurries containing 15% solids were used at pH values ranging from 5 to 11. Pure wear rates were obtaine…
Thermally stimulated creep and depolarization current measurements have been carried out in a temperature range between −180 and 120 °C, on a pure commercial poly(vinyl chloride). Mechanical and dielectric relaxation times involved in α and β relaxations are obtained by fractional stresses/polarizations procedure. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel peri-condensed Weitz-type donors: synthesis, physical properties, and crystal structures of 3,10-dithiaperylene (DTPR), 1,6-dithiapyrene (DTPY), and some of their CT complexesKazuhiro. Nakasuji, Hirohisa. Kubota, Tomoyuki. Kotani, Ichiro. Murata, Gunzi. Saito, Toshiaki…
Forty-eight strains of Thermus isolated from hot springs in Yellowstone National Park, Wyoming, USA, and eight reference strains were subjected to a numerical taxonomic analysis using Gower's coefficient (SG) with single and average linkage clustering. Two major groups were distinguished, which could be differentiated…
A viscoelastic model that describes the shrinkage rate of large pores within a fine‐grained body has been developed. The concept is based on a shrinkage potential derived from the surface and grain‐boundary tensions and viscous response determined by the creep characteristics of the polycrystal. Pore removal rates are…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDeactivation of a vanadia-alumina catalyst for nitric oxide reduction by ammoniaIn Sik Nam, John W. Eldridge, and J. R. KittrellCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 192–197Publication Date (Print):June 1, 1986Publication History Published online1 May 2002P…
Abstract The Raman spectra of supported molybdena‐alumina catalysts are reversibly modified by changing the laser power falling on the sample, which was examined in air. O 2 calcination or evacuation at 500–700°C produces the same modification if in situ characterization is performed. Subsequent contact with the ambie…
Abstract Quantitative thin‐section electron microscope studies were made on compositional fractions of ethylene copolymers crystallized under several extreme conditions. The co‐units chosen were such that the chains contained either ethyl, hexyl, or acetate side groups. Certain general features are independent of the…
Reversed Na-K exchange data between mica and a 2 molal aqueous (Na,K)Cl fluid (Flux & Chatterjee, 1986) have been employed to model the thermodynamic mixing behaviour of muscovite-paragonite crystalline solutions on the basis of the Redlich-Kister equation. For these binary micas, Gexm may be expressed as where A=1122…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOpposite regioselectivity in the epoxidation of geraniol and linalool with molybdenum and tungsten peroxo complexesAntonio Arcoria, Francesco Paolo Ballistreri, Gaetano Andrea Tomaselli, Fulvio Di Furia, and Giorgio ModenaCite this: J. Org. Chem. 1986, 51, 12, 2374–2376Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduction of nitric oxide with ammonia on alumina- and titania-supported metal oxide catalystsWing C. Wong and Ken NobeCite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 179–186Publication Date (Print):June 1, 1986Publication History Published online1 May 2002Published…
Abstract A new series of thermotropic liquid‐crystalline polymers, poly(vinyl ether)s and poly(propenyl ether)s, containing the mesogen 4‐methoxy‐4′‐hydroxybiphenyl in the side chain and different spacers between the mesogens and the backbone were synthesized and characterized by DSC and optical microscopy. Their meso…
Abstract The generally accepted kinetic mechanism for free radical copolymerization was simplified by various assumptions and restrictions to give several realistic and easily evaluated models for the simulation of industrial molding. Six assumptions, including conversion‐dependent rate coefficients and constant comon…
The elastic nonlocal moduli are first determined from an auxiliary problem involving longitudinal waves in an infinite nonlocal medium. A comparison of the dispersion equation obtained with that derived in the lattice dynamics of Born and von Kármán is made. Constitutive equations of Kroener and Eringen are introduced…
The paper shows an extension of the technique of open-circuit thermally stimulated discharge (TSD), consisting of simultaneously measuring the current and its charge on the external circuit as a function of temperature. The current is measured with a strongly damped meter which fails to give a time-resolved record of…
Abstract Von strahlenchemisch durch Gasphasen‐Pfropfung hergestellten Pfropfprodukten aus Polyethylen und Styrol wurden die Anteile an Homopolymerem und gepfropftem Styrol, die Struktur der Pfropfprodukte (an Hand von elektronenmikroskopischen Aufnahmen) sowie einige mechanische Eigenschaften in Abhängigkeit von der P…
SUMMARY A previous study with a range of soils indicated that adsorption of copper could not be adequately described by the Freundlich equation. Adsorption curves for all but a highly calcareous soil could be divided into two straight lines with a marked increase in slope at low solution concentrations. A computer pro…
Abstract This paper describes the structure and derivation of ‘classical’ silicone fluids, giving the reactions for the production of dimethyl fluids by Miiller‐Rochow synthesis, polymerisation, direct synthesis, hydrosilylation, and transesterification. The properties of siloxanes are described, and the applications…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFailure mechanisms for organic coatings subjected to 0.1M sulfuric acidMalcolm L. White, Hyacinth Vedage, Richard D. Granata, and Henry Leidheiser Jr.Cite this: Ind. Eng. Chem. Prod. Res. Dev. 1986, 25, 2, 129–132Publication Date (Print):June 1, 1986Publication History Publi…