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。
Evaluations were made of anti-blocking agents with two linear low density polyethylene (LLDPE) films. Diatomaceous earth (D-E) was com pared to untreated talc and coated talc regarding effectiveness as an anti-block agent and their interaction with fluorocarbon elastomer processing aids (PPA). Data showed that treated…
ABSTRACT Cooling lethalities were determined using Ball's formula method and other lethality evaluation equations for f c from 10–120 min, j c of 0.25–2.21, L/D geometry values of 0.25–2.0, and the difference between final heating and cooling temperatures of 72.2–111.1°C. For j c &lt 1.35 the Ball method overestim…
Reflection and transmission of electronmagnetic waves at a chiral-dielectric interface are analysed for normal and oblique incidence and for critical angles. Graphs of the reflection and transmission coefficients are given for various parameters of the two media as a function of the angle of incidence. The results of…
A real time spectroscopic ellipsometry (RTSE) investigation is reported for comprehensive optical characterization of a thin film/substrate system, vacuum-deposited hydrogenated amorphous (diamondlike) carbon on tantalum. Precision RTSE measurements were carried out from 1.6 to 4.0 eV with a time resolution of 3 s and…
Recent developments of the innovative LDF™ thermoplastic composites technology are reviewed with emphasis on discussion of the technology's fundamental basis and composites' property performance. The proprietary technology employs reinforce ment of long, aligned discontinuous fibers including carbon, Kevlar® or glass.…
An optimized set of thermodynamic functions to describe the Cu-Mg system has been obtained by a computer-operated least squares method. The experimental values taken from the literature and fitted in the calculation include phase diagram data, enthalpies of mixing of the liquid, and partial Gibbs energies of the liqui…
Research News: Oriented polymeric structures can possess anisotropic optical, electrical, and thermo‐mechanical properties which make them of interest for application in the production of polarizers, waveguides, optical filters, and wave plates. One method of producing such structures, the photopolymerization of self…
Abstract Raman scattering measurements are reported for amorphous selenium. It is found that the molecular structure of a‐Se on the scale of medium‐range order differs from the structure of most inorganic glasses. A laser‐induced glass‐crystalline transition is also studied. The experimental results suggest the existe…
Laminated composites based on ultrahigh carbon steel (UHCS) have been prepared by roll bonding in three systems: UHCS/304 stainless steel, UHCS/Hadfield manganese steel, and UHCS/Fe-3%Si alloy. Tensile properties of these laminates were evaluated after various conditions of selective heat treatment. From these data, i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPentacoordinate hydridosilicates: synthesis and some aspects of their reactivityRobert J. P. Corriu, Christian Guerin, Bernard Henner, and Qunjie WangCite this: Organometallics 1991, 10, 7, 2297–2303Publication Date (Print):July 1, 1991Publication History Published online1 M…
Abstract The synthesis of four bisphenol A‐based polyphosphates and phosphonates was accomplished. The polymerization involved a condensation between bisphenol A and a phosphorodichloridate. The heterophasic polycondensation technique was used with the aid of a phase transfer catalyst to yield molecular weights in the…
Lead concentrations in drinking water can be minimized by adjusting the pH and alkalinity. Such lead solubility controls, however, may be offset by other water treatment measures that inadvertently increase lead solubility, e.g., the adding of polyphosphate‐containing products. Through the use of solubility computatio…
The thermooptic coefficients, i.e., the change in refractive index with temperature (d n /d T ), of four National Institute of Standards and Technology standard reference material (SRM) glasses have been measured over the range of 25° to 125°C. The thermooptic coefficients of all four glasses, NBS‐710 (a soda‐lime sil…
Abstract Photochemical formation of colloidal silver, colloidal gold and silver‐gold (Ag‐Au) composite colloids under mild conditions has been studied. Irradiation of either aqueous AgCIO 4 or HAuCI 4 solution in the presence of sodium alginate (SA) with 253.7 nm light yielded colloidal silver or gold, whose particle…
Abstract The methods of pigment dispersion analysis have been reviewed in regard to their application to rubber, plastics, and other vehicle systems. The characteristics of dispersions have been divided into three categories: (1) agglomeration (2) microdispersion (networking) and (3) polymer-phase distribution. Stylus…
The fracture resistance of a fully dense, transparent, polycrystalline magnesium aluminate spinel was measured from room temperature to 1400°C using the chevron‐notched beam and the straight‐notched beam macroflaw techniques, as well as the indentation‐induced, controlled‐microflaw test method, all in three‐point bend…
The self-shielding treatment of resonant isotopes is currently performed in most lattice codes using the Stamm’ler method on simplified one-dimensional geometries. A generalization of this procedure is proposed for self-shielding calculations over the arbitrary two- and three-dimensional geometries typical of most adv…
Recently developed by CSIRO for quality control and assurance of fabrics, FAST, or fabric assurance by simple testing, consists of a series of instruments that are in expensive, robust, and simple to use, and their related test methods. FAST is specifically designed for use by tailors and worsted finishers; it measure…
The genus Calotropis of the tribe Asclepiadeae of Asclepiadaceae subfamily Ascle‐piadoideae is revised throughout its Tange in tropical and subtropical Africa and Asia. The three species recognized are keyed out, illustrated and described with appropriate bibliography, synonymy, notes on ecology, distribution and uses…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(ethylene oxide) macromonomers. 8. Preparation and polymerization of ι-hydroxypoly(ethylene oxide) macromonomersKoichi Ito, Kazuo Hashimura, Shinichi Itsuno, and Eiichi YamadaCite this: Macromolecules 1991, 24, 14, 3977–3981Publication Date (Print):July 1, 1991Publicatio…