Investigation of Nanostructured Radiation-protective Composites

Gulbin, V. N.; Петрунин, В. Ф.

doi:10.1016/j.phpro.2015.09.048

Cited by 3 publications

(4 citation statements)

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“…The well‐known lead‐containing compounds have an excellent γ‐ray shielding effect. Still, due to the harmful effects of easy migration of lead ions and high toxicity of lead, many related research workers are trying to find ways to develop environmentally friendly shielding materials, which are commonly used in tungsten, tantalum, bismuth or other elements and their compounds 18–28 . However, because of their high density, the surface contains few functional groups, and the action force with the rubber substrate is bad, making the material with shielding function in the rubber easy to agglomerate, poor dispersion, and other problems.…”

Section: Introductionmentioning

confidence: 99%

“…Still, due to the harmful effects of easy migration of lead ions and high toxicity of lead, many related research workers are trying to find ways to develop environmentally friendly shielding materials, which are commonly used in tungsten, tantalum, bismuth or other elements and their compounds. [18][19][20][21][22][23][24][25][26][27][28] However, because of their high density, the surface contains few functional groups, and the action force with the rubber substrate is bad, making the material with shielding function in the rubber easy to agglomerate, poor dispersion, and other problems. To solve this problem, the researchers found that altering the surface of the functional powder to functionalize the surface of the functional powder facilitates the enhancement of the force with the rubber substrate and the dispersion in the rubber.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Zeng,

Li,

et al. 2023

J of Applied Polymer Sci

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As a “green” radiation protection material with the potential to replace lead oxide, bismuth oxide has more research applications in the field of γ protection. However, due to their different surface properties, there are compatibility and interaction problems between metal oxides and rubber. To enhance the performance of bismuth oxide in neoprene, Bi2O3@PCPA‐KH590 was prepared by coating bismuth oxide with polyphenol/polyamine and grafting KH590 on the surface of bismuth oxide. This allows for creating more active sites with the help of polyphenol/polyamine, enabling KH590 to be grafted onto bismuth oxide particles. The S functional group on the silane coupling agent is then cross‐linked with the rubber substrate, enhancing the dispersibility of the bismuth oxide powder. This improvement not only improves the dispersibility of the bismuth oxide powder but also enhances the mechanical properties of the rubber composite material. Compared with pure CR, the mechanical properties of 60 wt% filler‐modified powder composites can still be maintained at a high level, with the tensile strength reaching 12.83 Mpa. In sum, the proposed method appears feasible for preparing highly filled radiation protection rubber‐based materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Zeng,

Li,

et al. 2023

J of Applied Polymer Sci

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“…Structured metallic materials have high mechanical properties but undergo significant swelling, including structural changes, when operating in the enhanced ionizing radiation mode. These structural changes can be prevented by using metals that are less susceptible to swelling and modification with various nanostructural fillers [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Filler Phase Interaction with Solidification Front in Al(TiC) Composite Produced by the In Situ Method

2021

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This paper presents simulation results of the interaction of TiC nanoparticle in liquid aluminum. The behavior of the TiC particle in the frontal interaction region stems from the operation of a system of such forces as gravity, viscous flow drag force, and Saffman force. The difference in density between the TiC and the aluminum matrix makes the particle fall, regardless of the radius dimension; while the Saffman force—which accounts for the local velocity gradient of the liquid aluminum—causes that particles with the smallest radii considered in the calculations 6.4 × 10−8 m; 7 × 10−8 m; 7.75 × 10−8 m; 9.85 × 10−8 m are repelled from the solidification front and the particles with 15.03 × 10−8 m are attracted to it. The viscosity growth in the course of casting caused by the lowering temperature reduces this effect, though the trend is maintained. The degree to which the particle is attracted to the front clearly depends on the velocity gradient of the liquid phase. For a very small gradient of 0.00001 m/s, the particle is at its closest position relative to the front.

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“…Gulbin et al established that using tungsten and lead oxide nanocrystalline powders for radiation-protective materials allow a 1.34-1.43 times increased radiation protection efficiency compared to analog material with coarse crystals [33]. El-Khatib et al studied the effect of particle size and weight percentage of CdO micro-sized and nano-sized particles on the gamma radiation shielding ability of CdO/HDPE.…”

Section: Introductionmentioning

confidence: 99%

Using multilayer polymer PI/Pb composites for protection against X-ray bremsstrahlung in outer space

et al. 2020

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This paper presents data about the radiation-protective characteristics of multilayer polyimide/lead (PI/Pb) composites for X-ray radiation. Multilayer composites were obtained by collecting lead-filled polyimide track membranes into a sandwich of the required thickness. ( Am) 241 = (E 59.5 keV) and ( Cd) 109 = (E 88 keV) isotopes were used as an X-ray radiation source. To assess the effect of lead filler particle size on the radiation-protective characteristics of a multilayer structure, data are presented on mathematically modeling the passage of 10-88 keV wavelength X-rays with through a composite. The experimental values of the attenuation coefficients of X-ray waves for a multilayer structure are 12-15% higher than the calculated ones. The increase in the attenuation coefficients obtained experimentally, compared with theoretical, is explained by using the proposed multilayer structure with lead particles in the nanoscale range.

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Investigation of Nanostructured Radiation-protective Composites

Cited by 3 publications

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Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Modeling the Filler Phase Interaction with Solidification Front in Al(TiC) Composite Produced by the In Situ Method

Using multilayer polymer PI/Pb composites for protection against X-ray bremsstrahlung in outer space

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Investigation of Nanostructured Radiation-protective Composites

Cited by 3 publications

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Preparation of Bi2O3@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Preparation of Bi2O3@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Modeling the Filler Phase Interaction with Solidification Front in Al(TiC) Composite Produced by the In Situ Method

Using multilayer polymer PI/Pb composites for protection against X-ray bremsstrahlung in outer space

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Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling

Preparation of Bi₂O₃@PCPA‐KH590/chloroprene composites with good mechanical properties under high‐filling