Mechanical and radiation shielding properties of flexible material based on natural rubber/ Bi2O3 composites

Intom, Sirilak; Kalkornsurapranee, Ekwipoo; Johns, Jobish; Kaewjaeng, S.; Kothan, S.; Hongtong, W.; Chaiphaksa, W.; Kaewkhao, J.

doi:10.1016/j.radphyschem.2020.108772

Cited by 71 publications

(22 citation statements)

References 22 publications

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“…On the other hand, the results pointed out that higher filler contents were required to achieve the same %change at the 5 MeV photon energy, mostly due to the initiation of pair production, which again enhanced the effects of added Bi 2 O 3 , Bi 2 S 3 , and Pb in photon attenuation, as seen by larger changes in µ m when the filler contents increased from 0 to 1000 phr ( µ m increased from 0.029 to 0.040 cm 2 /g). It should be noted that the recommended filler contents given in this work were not intended for the highest µ of the composites but rather the least amount of filler that produced a %change of an additional 40 phr filler to be less than 5% in order to minimize the effects of having too much filler in the NR matrix and its impact on lowering mechanical properties [ 13 , 20 , 24 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

Theoretical Determination of High-Energy Photon Attenuation and Recommended Protective Filler Contents for Flexible and Enhanced Dimensionally Stable Wood/NR and NR Composites

2021

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This work aimed to theoretically determine the high-energy-photon-shielding properties of flexible wood/natural rubber (NR) and NR composites containing photon protective fillers, namely Pb, Bi2O3, or Bi2S3, using XCOM. The properties investigated were the mass attenuation coefficient (µm), linear attenuation coefficient (µ), and half value layer (HVL) of the composites, determined at varying photon energies of 0.001–5 MeV and varying filler contents of 0–1,000 parts per hundred parts of rubber by weight (phr). The simulated results, which were in good agreement with previously reported experimental values (average difference was 5.3%), indicated that overall shielding properties increased with increasing filler contents but decreased with increasing incident photon energies. The results implied the potential of bismuth compounds, especially Bi2O3, to replace effective but highly toxic Pb as a safer high-energy-photon protective filler, evidenced by just a slight reduction in µm values compared with Pb fillers at the same filler content and photon energy. Furthermore, the results suggested that the addition of 20 phr wood particles, primarily aimed to enhance the rigidity and dimensional stability of Pb/NR, Bi2O3/NR, and Bi2S3/NR composites, did not greatly reduce shielding abilities; hence, they could be used as dimensional reinforcers for NR composites. Lastly, this work also reported the optimum Pb, Bi2O3, or Bi2S3 contents in NR and wood/NR composites at photon energies of 0.1, 0.5, 1, and 5 MeV, with 316–624 phr of filler being the recommended contents, of which the values depended on filler type and photon energy of interest.

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Section: Resultsmentioning

confidence: 99%

Theoretical Determination of High-Energy Photon Attenuation and Recommended Protective Filler Contents for Flexible and Enhanced Dimensionally Stable Wood/NR and NR Composites

2021

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“…Due to the replacement of TeO2 by WO3 which higher than density and atomic number. It can be seen that, photon energy also affects the μm value [21,36]. For low energy ranging < 0.30 MeV, μ m values of all glass samples decreases rapidly with increasing energy.…”

Section: X/g Ray Shielding Parametersmentioning

confidence: 87%

“…The theoretical simulation of mm for (70-x) TeO2-30 P2O5-xWO3 at x = 10, 20, 30, 40, and 50 mol% glass system were simulated by mixture law and evaluated by using WinXCom software program as exhibited in Eq. ( 1): [21,22]…”

Section: X/ Ray Shielding Parametersmentioning

confidence: 99%

behaviour of tungsten oxide on phosphor-tellurite glasses for photon proton and alpha particles shielding

Ravangvong

Glumglomchit

Pranudomrat

et al. 2023

J. Mater. Sci. Appl. Energy.

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This research, photons shielding properties such as mass attenuation coefficients (mm), effective atomic number (Zeff), effective electron density (Nel) and kinetic energy per unit mass (kerma) relative to air for WO3 based on TeO2–P2O5–WO3 glass system have been simulated by WinXCom software program at energies of 10–3–105 MeV. Also, buildup factors (BFs) have been estimated at widely energy ranging 15 keV – 15 MeV for penetration depths (PD) until 40 mean free path (mfp). The results of glass system in formula (70–x) TeO2–30P2O5–xWO3 at x = 10, 20, 30, 40, and 50 mol% exhibited that the partial replacement of TeO2 by WO3 was adjusted photons attenuation behaviors for get better. In addition, mass sopping power (MSP) and projected range (PR) were evaluated using SRIM software program for proton (H+1) and alpha particles (He+2) at kinetic energy ranging 10 keV – 10 MeV. The results may be inferred that glass sample with high WO3 content was superb for photons, proton and alpha particles attenuation. The results of this research may be useful in enhancing optimization and potential to use as a transparent material to against photon, proton and alpha particles.

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“…The Monte Carlo method is used in this paper to simulate radioactive radiation passing through rubber containing rare earth elements, and the shielding efficiency of various rare earth elements for specific energy radiation is obtained, allowing suitable materials for radiation shielding design to be selected [15] . In terms of simulation, the method of rare earth element doping is to create a ball model of rare earth element material and dope it into a three-dimensional rubber model, and then create the model by random doping.…”

Section: Introductionmentioning

confidence: 99%

Design and development of composite shielding material for box protective gloves

Guo

Zhang

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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Low-energy radiation is primarily involved in the spent fuel treatment process in a specific nuclear facility, but if it is not shielded, it will still have an impact on worker health. In light of this unique low-energy environment, the Monte Carlo simulation software geant4 is used to simulate and calculate the effect of doping many rare earth elements into glove rubber materials on the shielding effect of low-energy gamma radiation. The results show that some rare earth elements have a good gamma radiation shielding effect, and their chemical toxicity is lower than that of the traditional shielding material lead. This paper demonstrates that selecting rare earth materials for glove box gloves in a suitable energy range is reasonable, and that incorporating suitable rare earth elements into glove materials can improve the energy attenuation rate of composite protective materials. Experiments are used to create the material that can be used to make glove box gloves. The radiation shielding experiment shows that this material's shielding rate to 59.5keV energy can reach 33%~41%, and its other physical properties are good. Based on this finding, we believe that this material can be used to replace lead-containing gloves in some situations and can be used to design related shielding and protective equipment.

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Mechanical and radiation shielding properties of flexible material based on natural rubber/ Bi2O3 composites

Cited by 71 publications

References 22 publications

Theoretical Determination of High-Energy Photon Attenuation and Recommended Protective Filler Contents for Flexible and Enhanced Dimensionally Stable Wood/NR and NR Composites

Theoretical Determination of High-Energy Photon Attenuation and Recommended Protective Filler Contents for Flexible and Enhanced Dimensionally Stable Wood/NR and NR Composites

behaviour of tungsten oxide on phosphor-tellurite glasses for photon proton and alpha particles shielding

Design and development of composite shielding material for box protective gloves

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