Materials Literature
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Blend rubber films were prepared by mixing styrene grafted rubber latex and natural rubber latex (NRL) with varying proportions by gamma radiation from Co-60 source at room temperature. Tensile strength, modulus at 500% elongation, elongation at break, permanent set, and swelling ratio were measured. Tensile strength…
Abstract Environmental dredging creates challenges in finding areas to construct confined disposal facilities and typically results in residual contamination. In situ capping (either in place of dredging or for capping residual contaminants) can be limited by concerns regarding navigation, uniform cap placement, bioin…
This paper introduces the use of a scanning electron microscope (SEM) to evaluate the insulation property of wide band gap insulators. An SEM may be used not only to observe a surface image but also to provide a fine electron beam for charging an uncoated-insulator surface at once. The charging can create an electric…
We have spin coated silica gel films of ∼10μm onto porous silicon (PS) substrates with photoluminescence (PL) emissions peaks in the 600–700nm spectral range, producing a 20-fold enhancement of the original intensity in the shorter wavelength end. We attribute this enhancement to the reduced nonradiative recombination…
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Aiming at the problem that silicone rubber (SIR) is used in different environmental areas in China, present paper reports the hydrophobicity transference of SIR affected by pollutions and environmental factors. Kieselguhr and kaolin were used as artificial pollutions, and then the hydrophobicity of SIR was found to be…
Abstract Domain size of 10% dispersed polystyrene in polyethylene was followed in a 34‐mm intermeshing counter‐rotating twin screw extruder. Variables studied included the effects of barrel temperature, screw speed, viscosity ratio of dispersed‐to‐continuous phase, and parallel melt versus preblended solids feeds. Aft…
Purpose The purpose is to present a new approach for studying the phenomenon of traveling bubble cavitation. Design/methodology/approach A flow around a rigid, 2D hydrofoil (NACA‐0012) with a smooth surface is analyzed computationally. The Rayleigh‐Plesset equation is numerically integrated to simulate the growth and…
Abstract The stopping power rises in symmetric sandwiches with increasing explosive layer thickness, which is equivalent to higher plate velocities. Further the additional weight is a burden for add‐on armor. Therefore a study was made with very thin sandwich plates of 1 mm as more or less the minimum, what can be use…
We fabricated a switchable phase grating utilizing a ferroelectric liquid crystal (FLC) mixed with a photocurable liquid crystal using a simple one-step process, i.e., photoirradiation to a uniformly aligned FLC cell through a photomask. A fast response of the order of 1ms was demonstrated for the switching process be…
For the past 40 years, the scaling of CMOS device technology has enabled system performance to double every two years. However, emerging classes of applications for which network-speed processing and data-intensive modeling are integral components will demand a much faster rate of improvement, such as 2x/year in order…
Two ZrB2-based composites were fabricated by hot-pressing with vacuum. ZrB2+20vol%SiC and ZrB2+20vol%SiC+8vol%TiB2 were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB2 material. For the ZrB2-based composites…
Polymer nanocomposites possess promising high performances as engineering materials, if they are prepared and fabricated properly. It was also clarified that they could provide favorable performances as dielectrics and electrical insulation. Comprehensive reviews were given in literatures by the author firstly in 2004…
Developments in X-ray analysis hardware and software have combined to dramatically improve the throughput, speed, and accuracy of formulation analyses. We will focus on a complimentary development, the growth and application of a comprehensive database based on the Powder Diffraction File™ (PDF®). The PDF is an edited…
The telecom boom of the late 1990s helped drive a revolution in thin-film technology. As a result, new deposition techniques have been developed that can withstand environmental challenges such as humidity and thermal stress.
The synthesis and phase behaviour of the first cuneane derivatives having liquid crystalline properties are reported. This new class of liquid crystalline materials is the homologous series of bis[4‐(n‐alkoxyphenyl)]cuneane‐2,6‐dicarboxylates. They were synthesized by two methods: either by isomerization of the previo…
The DFT B3LYP geometry optimization was carried out and the IR spectra were calculated for rhodium(II) tetracarboxylate complexes Rh 2 (O 2 CR) 4 (R = H, CH 3 , CF 3 , C 6 H 5 ) and for the compound Rh 2 (O 2 CH) 4 (H 2 O) 2 with two axially coordinated water molecules. A minor influence of the substituent R on the el…
We studied the structural transitions in ferronematics based on the thermotropic nematic liquid crystal MBBA (4′ -methoxybenzylidene-4-n-butylaniline) having a nematic-to-isotropic transition temperature T N–I = 48.0○C and in MBBA-based ferronematics doped with a magnetic suspension consisting of Fe3O4 particles (10 n…
Surface-modified mesoporous silicas (MSs) were investigated for recyclable adsorption of an endocrine disrupter, bisphenol A (BPA). Surface-modified MSs were prepared by (i) post-synthesis surface modification of MSs using surface hydroxyl groups and organosilanes (m-MS) and by (ii) co-condensation of tetraethoxysilan…
The graft copolymerization of acrylic acid (AA) onto styrene butadiene rubber (SBR) was carried out in toluene at 80°C using benzoyl peroxide (BPO) as initiator. The synthesized styrene butadiene rubber-g-acrylic acid (SBR-g-AA) was characterized with Raman IR spectroscopy. A study was conducted on the use of SBR-g-AA…