Tungsten nanoparticles influence on radiation protection properties of polymers

Gavrish, Vladimir; Baranov, Georgy; Chayka, Tatyana; Derbasova, Nadezhda; Lvov, Alexey; Matsuk, Yu.

doi:10.1088/1757-899x/110/1/012028

Cited by 18 publications

(9 citation statements)

References 8 publications

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“…WC nanoparticles are chosen as ternary reinforcement in PAEK along with B 4 C and MWCNT in high energy gamma radiation shielding application on account of its high density (15.63 g cm −3 ), mechanical, and thermal properties (https://www.makeitfrom.com/compare/Boron-Carbide-B4C/Tungsten-Carbide-WC(2018)). Gavrish et al . studied the influence of WC in ultra‐high molecular weight polyethylene (UHMWPE) and reported that increase in the WC content resulted in improvement in thermo physical, radiation‐shielding, and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Tungsten carbide, boron carbide, and MWCNT reinforced poly(aryl ether ketone) nanocomposites: Morphology and thermomechanical behavior

Remanan

Bhowmik

Varshney³

et al. 2018

J of Applied Polymer Sci

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This study involves the development and thermo-mechanical characterization of the individual, binary, and ternary nanocomposites using radiation resistant fillers like boron carbide (B 4 C), tungsten carbide (WC), and functionalized multi-walled carbon nanotubes (F-MWCNT) in a high performance polymer, namely, poly aryl ether ketone (PAEK). Transmission electron microscopy studies revealed the distribution and dispersion of nanofillers in the matrix. It has been observed that the presence of WC and F-MWCNT in PAEK matrix significantly enhanced the tensile strength of the composite whereas B 4 C made it stiff and brittle in nature. The tensile property improvement caused by WC and F-MWCNT has been correlated with the tensile fracture surface morphology studies. Dynamic mechanical analysis provided insight into the positive effect of nanofillers in delaying the relaxation of polymer chains. The thermogravimetric analysis gave indications on the increase in the thermal stability of the nanocomposites with the increase of nanofillers content.

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Section: Introductionmentioning

confidence: 99%

Tungsten carbide, boron carbide, and MWCNT reinforced poly(aryl ether ketone) nanocomposites: Morphology and thermomechanical behavior

Remanan

Bhowmik

Varshney³

et al. 2018

J of Applied Polymer Sci

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“…Several authors have found that the use of tungsten nanoparticles in a polymer matrix are efficient in protecting against ionizing radiation [6], [7], [8] and [9]. Other authors have researched a light and comfortable fabric, with high efficiency of protection against ionizing radiation in composite materials from the use of bismuth oxide III (Bi2O3) in a polymeric matrix [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Study of radiation protection vestments for maintenance of mobile nuclear power plants

Celestino

Sordi

2023

Braz. J. Rad. Sci.

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Most radiation exposure to personnel comes from inspection, maintenance and repair within the reactor compartment. The objective of this paper was to discover the garment that, at the same time, presents the best result for the attenuation of ionizing radiation, as well as good ergonomics for the maintenance professional of mobile nuclear plants. For this, market research was carried out and, as a result, nine Radiation Protection Vestments (VPRs) were found, from five different manufacturers and from three countries, the United States, Japan and China; and which are feasible to be acquired. To choose the VPR, the optimization techniques of CIPR 55 were used: Multi-Attribute Utility Analysis and Multi-Criteria Outranking Analysis. Based on the information provided by the manufacturers, five attributes were chosen for comparison: protection cost, percentage of ionizing radiation attenuation, weight, discomfort and surface decontamination of the vestment. To verify the robustness of the analytical solution, the values of the scaling constants were re-calculated, where it was observed that the analytical solution found is strongly influenced when the protection cost is changed, as it is the highest cost VPR among all those surveyed. The VPR chosen by both optimization techniques was the STEMRAD 360, which has the highest attenuation of ionizing radiation, as well as being the VPR with greater emphasis on ergonomics.

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“…Tungsten has unique physical and chemical properties, that is why alloys and composites based on it are widely used in various fields of modern science and technology such as metallurgy, mechanical and instrument engineering, electrical engineering, structural materials, etc. [1][2][3][4][5] Analysis of the scientific and technical literature shows that the demand for tungsten and products made from it is growing, and that the prices for tungsten products are rising accordingly. 6,7 The known methods of producing tungsten by reducing its oxide compounds with hydrogen are characterized by high specific energy consumption and require a complex technological equipment.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical reduction of tungsten (VI) oxide from a eutectic melt CaCl2-NaCl under potentiostatic conditions

Medvezhynska

Kuleshov

Bykov

et al. 2022

JSCS

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The paper presents results of a study of the electrochemical reduction of tungsten (VI) oxide in a melt of the eutectic composition 52 mol.% CaCl2 and 48 mol.% NaCl at a liquid gallium electrode. Scanning electron microscopy and X-ray diffraction methods were used to study the microstructures of the obtained powders. The Rietveld method which is based on diffraction patterns were used to calculate the quantitative content of phases in WO3 reduction products. The thermodynamic properties of the electrolysis process were investigated by voltammetry. It is shown that a necessary condition for the electrochemical reduction of WO3 is electrolysis at potentials higher than the standard electrode potential of decomposition of calcium tungstate, which is formed by the interaction of tungsten oxide with calcium chloride. The reduction can take place by both electrochemical and metallothermic mechanisms depending on the conditions of electrolysis. The reduction product is fine tungsten with a particle crystallite size of up to 1 ?m.

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Tungsten nanoparticles influence on radiation protection properties of polymers

Cited by 18 publications

References 8 publications

Tungsten carbide, boron carbide, and MWCNT reinforced poly(aryl ether ketone) nanocomposites: Morphology and thermomechanical behavior

Tungsten carbide, boron carbide, and MWCNT reinforced poly(aryl ether ketone) nanocomposites: Morphology and thermomechanical behavior

Study of radiation protection vestments for maintenance of mobile nuclear power plants

Electrochemical reduction of tungsten (VI) oxide from a eutectic melt CaCl2-NaCl under potentiostatic conditions

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