Materials Literature
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<div class="htmlview paragraph">Much has been written over the years regarding the advantages of using microcellular polyurethane (MPU) within the area of chassis and suspension systems. However, there have been limited discussions in an open forum of the geometric design requirements for MPU jounce bumpers. The…
<div class="htmlview paragraph">This paper deals with optimized fastening of magnesium components to overcome serious problems in practice. For this, fasteners made of aluminum have significant advantages compared to conventional steel fasteners. The reasons are shown to the reader; calculations and established…
Abstract Polyurethane foams with different formulations were synthesized and characterized for use as supporting matrices of granular solid adsorbents. The open cell content, specific gravity, thermal stability, and hydrophobicity were determined and related to the formulation composition. The synthesized foams had op…
<div class="htmlview paragraph">Within JIS-SUJ2 (SAE52100 equivalent) bearing steel, we have succeeded in producing a prior-austenite grain size of approximately 5 μm in diameter (half that of the conventional grain size). It is believed that the packet or block size of the martensite decreases proportionally wi…
<div class="htmlview paragraph">Very stringent limits for exhaust gas emissions as well as high claims for onboard diagnosis (OBD) of the three-way catalytic converter (TWC) demand a sophisticated control and observer strategy which can both further reduce the exhaust gas emissions and also estimate the relevant…
<div class="htmlview paragraph">The maximum liquid-phase penetration and vaporization behavior was investigated by using simultaneous measurement for mie-scattered light images and shadowgraph ones. The objective of this study was to analyze effect of variant parameters (injection pressure, ambient gas condition…
Abstract A lack of processability is one of the major problems associated with practical applications of conductive and electroactive polypyrrole. Polypyrrole nanoparticles that were sterically stabilized in a solution and supported by an amphiphilic elastomer of poly(ethylene glycol) ( M n 2000 g mol −1 )/poly(tetram…
<div class="htmlview paragraph">We, at Toyota, have been working to develop a new DPNR (Diesel Particulate-NOx Reduction) system to decrease both PM and NOx emissions by combining the NOx storage-reduction catalyst for direct injection gasoline engines with the most advanced engine control technologies.</div&…
<div class="htmlview paragraph">This paper presents a 3-D CFD modelling of flow and heterogeneous reactions in catalytic converters. The pressure and velocity fields in the catalytic converters are calculated by the state of the art modelling technique for the flow resistance of catalyst substrate. A surface rea…
<div class="htmlview paragraph">Diesel Particulate Filter (DPF) behavior depends strongly on the microstructural properties of the deposited soot aggregates. In the past the issue of the growth process of soot deposits in honeycomb ceramic filters has been addressed under non-reactive conditions and the influenc…
Abstract The use of tetrakis Sn(IV) alkoxides as highly active initiators for the ring‐opening polymerization of D , L ‐lactide is reported. The activities of prepared Sn(IV) tetra‐2‐methyl‐2‐butoxide, Sn(IV) tetra‐iso‐propoxide, and Sn(IV) tetra‐ethoxide were compared to a well‐known ring‐opening polymerization initi…
Abstract Commercially available regular denier poly(ethylene terephthalate) (PET) fabrics were used in this investigation. PET fabric samples were wound on a bobbin and then exposed to supercritical CO 2 under conditions representing a typical supercritical CO 2 dyeing cycle. Infrared spectroscopy, X‐ray diffraction,…
We report on the role of two boron–hydrogen complexes in the conductivity conversion from p-type to n-type in boron-doped diamond samples. The calculated electronic structures of the simulated clusters show that the boron–hydrogen complex of hydrogen–boron pairs (BH1) is characteristic of p-type conductivity, and that…
The electronic properties of one-dimensional defects in ultrathin ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ films have been investigated by low-temperature STM and STS. Whereas line defects between two oxide domains show almost no topographic contrast in low bias images, they appear with a distinct corrugation at higher pos…
Abstract A phosphorus‐containing amine, bis(4‐aminophenoxy)phenyl phosphine oxide (BAPP), suitable for curing epoxy resins with improved fire performance was synthesized and characterized with Fourier transform infrared spectroscopy and nuclear magnetic resonance. The reactivity of the amino group was evaluated by dif…
A detailed crystal-field splitting analysis is reported for the quintet states ${}^{5}{D}_{J},$ ${}^{5}{G}_{J},$ and ${}^{5}{L}_{J}$ of ${\mathrm{Tb}}^{3+}{(4f}^{8})$ in the garnets ${\mathrm{Y}}_{3}{\mathrm{Al}}_{5}{\mathrm{O}}_{12}(\mathrm{YAG})$ and ${\mathrm{Tb}}_{3}{\mathrm{Al}}_{5}{\mathrm{O}}_{12}(\mathrm{TbAG}…
Abstract The rheology, dc‐conductivity, and microwave properties of acrylic, polyurethane, and epoxy composites containing 0–15 vol % of nanosized carbon particles have been investigated. Carbon nanoparticles (1–3 nm) are produced by a shock wave technology. Steady‐state shear and oscillatory flow tests are applied to…
Abstract Polystyrene/nylon 1212 blends were prepared with supercritical CO 2 as the substrate swelling agent and monomer/initiator carrier. Original nylon 1212 and blends were characterized with differential scanning calorimetry (DSC), polarizing microscopy, wide‐angle X‐ray diffraction, and scanning electron microsco…
Abstract The industrial use of ethylene–vinyl alcohol copolymer (EVOH) film is limited because it is easily degraded by moisture. The plasma source ion implantation (PSII) technique with CF 4 or CH 4 gas was used for the EVOH film to improve the surface hydrophobic properties. Variables examined in implantation were i…
Abstract Some properties of the structure of polyamide (PA) and polypropylene (PP) hollow fibers were investigated in a theoretical fashion. These fibers were simultaneously compared with solid fibers. The structural indices of the hollow fibers, that is, the wall thickness and inner diameter, were systematically exam…