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517 articles for “scanning”
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Analysis of Oxidation Behavior on T-22 Boiler steel at 800°C
Abstract: The behavior of boiler steel T-22 in a rich air environment has been studied under the condition of isothermal at 800°C for 50 cycles in a cyclic manner. The kinetics of oxidation was established for boiler steel T-22under cyclic conditions for 50 cycles by weight change technique per unit area. Each cycle heating the sample at 1 hour followed by cooling 20 minutes at ambient temperature. Detonation gun spray techniques …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 18–25 Read article
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Studies on Mechanical, Thermal, Physical Properties and Characterisation of PLA-EVA Blend with Microclay and Product Development
Abstract: PLA-EVA (70:30 wt. %) with microclay (1, 3, 5 wt. %) was also melt blended using Glycerol (1%) was used as compatibilizer in a twin screw compounding extruder. Then test specimens were prepared by an injection molding machine. Mechanical, thermal and physical properties were evaluated. As microclay content was increased, the tensile strength, elongation at break and tensile modulus were slightly decreased but higher than that of PLA-EVA (30 wt. …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 24–33 Read article
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Improving Photocatalytic and Antibacterial Properties of Zein/Polyvinyl Alcohol Polymer Composite Film by Dispersing TiO2 Nano Particles
Abstract: Zein/polyvinyl alcohol/nano-TiO2 composite film was effectively blended using a solution casting method. Mechanical, photocatalytic, and antibacterial properties of the composite film were evaluated. The breaking elongation of the composite film increased up to the maximum loading of 0.4% of nano-TiO2. The humidity and moisture content relationship was estimated with standard modified models of Halsey, Oswin, Chung Pfost, and Henderson. It was found that the Halsey model was the most suitable …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 110–127 Read article
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Development of Refractory Synthesized from Waste Ceramic Fiber and Chamotte
Abstract: Research on refractory materials is always essential in thermal engineering to ensure both heat savings and environmental protection. Raw materials used initially have a great influence on the production process and product properties. In addition, the refractory products are tested under conditions of high temperature and varying intensity, such as tests of thermal shock resistance. In this study, new refractory composites were prepared by mixing waste ceramic fibers with chamotte …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 101–109 Read article
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Enhancement of Dielectric Properties of PVDF Composites with MWCNT and GCNF Fillers
Abstract: The paper discusses the role of multiwalled carbon nanotube (MWCNT) and graphitized carbon nanofibre (GCNF) in Polyvinylidene fluoride (PVDF) composites prepared by melt mixing method. Analytical studies were carried out using X-ray diffraction analysis (XRD) and Fourier transform infrared spectroscopy (FTIR) for understanding the role of fillers. Formation of β phase crystalline structure with a relative increase in β phase content is observed and is maximum at 5 wt.% of …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 43–52 Read article
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Eco-friendly Materials of Polymer Composites Based on Water Hyacinth Fibers/Roving
Abstract: Overgrowth of water hyacinths will cause difficulties for water traffic in the Mekong Delta and affect the growth of other aquatic species. The water hyacinth as a raw material available in nature has been applied in production of the composite materials. The water hyacinth trees were treated in NaOH solution for 2-12 hours with concentration in the range 2.5-15.0%. The morphology of the water hyacinth before and after treatment was …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 62–69 Read article
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Characteristics of Novel Geopolymer Composites Synthesized from Red Mud and Diatomaceous Earth in Autoclave Conditions without Using Alkaline Activators
Abstract: The geopolymer-based materials have been studied and developed since the last decades of the 20th century and applied in many fields of life. The production of geopolymer also has many different levels of technology from low to high technology which depends on quality and the applied fields of products. The geopolymer composites are also considered as friendly environmentally products related to low energy consumption production technology; reuse industrial wastes as …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 81–91 Read article
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Microstructural Characteristics and Mechanical Properties of the Green Composites Reinforced Bamboo Optimized the Treated Parameters
Abstract: Concrete and steel are traditional building materials with high strength and stress. They are usedeffectively in civil construction, structures of bridges and others. According to the current trend, theconstruction materials have more attention for low density and high durability which produced fromnatural materials; moreover, they are able to be recycled and reused. In this study, the green compositeswere fabricated based on the highly performance epoxy combined with bamboo to get …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 28–38 Read article
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Influences of Silica Fume to Engineering Properties of High Volume Fly Ash Concrete (HVFC)
Abstract: High volume fly ash concrete (HVFC) is one kind of the most promising concrete materials in the 21st century. HVFC has special properties such as high flowability, mechanical strength meets the requirements of contruction standards, low permeability, high durability, and others. Furthermore, HVFC is able to continuously develop strength during long time because the high activity alumina-silicates in the fly ash particles are dissolved slowly and prolong. Therefore, this study …
Published in Journal of Polymer & Composites · Vol. 9, Issue 3, 2021 · pp. 33–44 Read article
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Thermally Trigged Self-Healing Smart Shape Memory Polymer Composite
Abstract: Temperature-responsive self-actuating PU/MWCNTs composites were prepared with micro-compounder through in-situ polymerization. For making of 1CNTPU composite sample 1 part per hundred multiwall Carbone nanotubes (MWCNTs) were reinforced into the neat polyurethane (PU) base matrix. Surface characterizations for pure and composite have studying by using Atomic Force Microscope (AFM), high resolutions Scanning Electron Microscopy (SEM). Properties like shape recovery, storage modulus, loss modulus, tensile stress, degree of hardness, and flexural stress …
Published in Journal of Polymer & Composites · Vol. 9, Issue 3, 2021 · pp. 10–18 Read article
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Synthesis of PANI/RGO/NiCrO Nanocomposite Material for Charge Storage Application
Abstract: PANI/RGO/NiCrO nanocomposite is synthesized by chemical oxidative polymerization of aniline and Nickel-Chromium Oxide (NiCrO). The prepared PANI/RGO/NiCrO nanocomposite exhibited high specific capacitance of 800 F/g at the scan rate of 5 mV/s, high power density of 1399.44 Wkg-1 and high energy density of 70 Whkg-1. The as-prepared polymer nanocomposites were characterized by X-ray diffraction (XRD) to study crystallinity, Fourier transform infrared spectroscopy (FTIR) to know the functional groups, Transmission electron …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 89–99 Read article
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Synthesis and Characterization of Al-Mg-Si Alloy based Hybrid Composite Reinforced with SiC and Graphite
Abstract: The present work is carried out to investigate the mechanical properties of Al-Mg-Si alloy matrix based hybrid metal matrix composites (MMCs) using stir casting method owing to its popularity and large scale productions. SiC and graphite reinforcements were added each with 1%, 2%, 3% and 4% respectively to fabricate four composites specimens. X-ray diffractometer and scanning electron microscope were used for phase identification and microstructure characterization (SEM). Density, hardness, compressive …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 9–19 Read article
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Structural and Electrical Properties of Low-Energy Ion Beam Kr-Irradiated In/Se Bilayer
Abstract: In the present work, In (~50 nm) over Se (~50 nm) thin films were deposited successively on an Si substrate by e-beam evaporation method under 2×10–5 mbar pressure. The In/Se bilayers were irradiated with low-energy ion beams of 350 keV Kr+1 with fluence of 3 × 1016 ions/cm2. The sample was subsequently characterized for phase formation using X-ray diffraction and thickness profile using Rutherford backscattering spectrometry analysis. In the pristine …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 91–96 Read article
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Effect of Length and Tenor of the Introduction of Sansevieria cylindrica Fibers on the Mechanical Performance of Natural Fiber Composites
Abstract: The substitution of synthetic fillers, such as carbon black, with biobased ones in natural rubber (NR) is a trend of interest in view of increased sustainability and exploitation of agroforest waste in the materials sector. In this work, NR was filled with short fibers extracted from Sansevieria cylindrica (SC) leaves of various length (10, 20, 30, or 40 mm) and in different amounts (3, 6, or 10 g per 100 …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 94–101 Read article
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Photoluminescent Reduced Graphene Oxide (rGO)–ZnO Nanocomposites Prepared Through one-pot Solvothermal Route
Abstract: In the present article, we report solvothermal synthesis of reduced graphene oxide (rGO)–ZnO nanocomposites through in situ exfoliations of graphite oxide with two different zinc-containing precursors viz. Zinc acetate dihydrate and zinc(II) acetylacetonate in water-diethylene glycol medium with hexamethylenetetramine as a reducing agent. The obtained rGO–ZnO nanocomposites were characterized by X-ray diffraction, and the ZnO lattice parameters were calculated. Raman spectroscopy indicated the presence of characteristic bands of graphene and …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 70–80 Read article
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Microstructure and Mechanical Characterization of AA390 and Si3N4 Metal Matrix Composite Using Severe Plastic Deformation
Abstract: Metal matrix composites (MMCs) have significant attention in recent years due to their potential for improved mechanical properties compared to conventional monolithic materials. This study focuses on the microstructure and mechanical characterization of a MMC comprising AA390 aluminum alloy reinforced with Si3N4 particles. The severe plastic deformation (SPD) process, Equal Channel Angular Pressing (ECAP), was employed to fabricate the composite with enhanced mechanical properties. The ECAP method was chosen as …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 17–30 Read article
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Influence of SiO2 Nanoparticles on the Structural, Morphological, and Optical Properties of CsPbBr3 Quantum Dots
Abstract: This work mainly investigates the structural and optical property differences between CsPbBr3/SiO2 quantum dots (QDs) and CsPbBr3 QDs thin films deposited on fluorine-doped tin oxide (FTO) glass. X-ray diffraction of CsPbBr3/SiO2 QD thin film showed a polycrystalline cubic nanostructure with (200) as a dominant phase and did not show any peak of SiO2. Scanning and transmission electron microscopy images show that it is very small spherical or semi-spherical particles with …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 62–69 Read article
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Boron Nitride Nanoplatelets and Aluminium Nitride Incorporated Organic Organic Eutectic Phase Change Materials with Enhanced Thermal Conductivity with Low-Loading Nanoadditives
Abstract: Miniaturized high performance electronic appliances generate tremendous heat during the duty cycle, has led research community to explore advanced thermal management strategies. Operating electronics at high temperature may result in malfunctioning of compact appliances. Thus, phase change materials (PCM) are applied to maintain isothermal temperature by implementing phase transition through latent heat. To improve the thermal conductivity and to deduce at suitable phase transition temperature of novel eutectic PCM, nanoplatelets …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 1–9 Read article
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A Case Study on Performance of Credit Rating Agencies: An Overview
Abstract: Credit rating is one of the significant supporting services for the development of debt capital market. Recently, credit rating agencies have also started playing a pivotal role in the development of Indian common stock market by grading IPOs. But the rating agencies and their services are under scanner, particularly after the eruption of recession. In the backdrop of debate over the working of credit rating agencies all over the world, …
Published in Journal of Production Research & Management · Vol. 5, Issue 2, 2015 · pp. 16–23 Read article
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Fabrication and Study of Multiwall Carbon Nanotube based capacitor electrodes for Energy Storage Applications
Abstract: Current supercapacitors gift numerous wonderful boundaries that critically inhibit the performance,power, and electric capacitance of strength garage devices. Supercapacitors gift an thrilling prospect that has infinite packages in renewable strength garage and cutting-edge day digital devices. In current years thethrilling improvement of carbon nanotubes (CNTs) has offered a bonus in electrode improvement. CNTs, but useful for his or her improved electrode floor place, have extreme boundaries concerning conductivity and electrode …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 3, 2021 · pp. 56–60 Read article