Physical, mechanical and neutron shielding properties of h-BN/Gd 2 O 3 /HDPE ternary nanocomposites
| Autor: | Ş. Gözde İrim, Mahmut Doğru, Abdulmounem Alchekh Wis, Ahmet Avcı, Oktay Baykara, Guralp Ozkoc, M. Aker Keskin, M. Karakoc |
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| Rok vydání: | 2018 |
| Předmět: |
Radiation
Nanocomposite Materials science Polymer nanocomposite 010308 nuclear & particles physics 02 engineering and technology Neutron radiation 021001 nanoscience & nanotechnology 01 natural sciences Neutron capture 0103 physical sciences Electromagnetic shielding Neutron High-density polyethylene Composite material 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Radiation Physics and Chemistry. 144:434-443 |
| ISSN: | 0969-806X |
| DOI: | 10.1016/j.radphyschem.2017.10.007 |
| Popis: | In order to prepare an effective neutron shielding material, not only neutron but also gamma absorption must be taken into account. In this research, a polymer nanocomposite based novel type of multifunctional neutron shielding material is designed and fabricated. For this purpose, high density polyethylene (HDPE) was compounded with different amounts of hexagonal boron nitride (h-BN) and Gd 2 O 3 nanoparticles having average particle size of 100 nm using melt-compounding technique. The mechanical, thermal and morphological properties of nanocomposites were investigated. As filler content increased, the absorption of both neutron and gamma fluxes increased despite fluctuating neutron absorption curves. Adding h-BN and Gd 2 O 3 nano particles had a significant influence on both neutron and gamma attenuation properties (Σ, cm −1 and µ/ρ, cm −2 /g) of ternary shields and they show an enhancement of 200–280%, 14–52% for neutron and gamma radiations, respectively, in shielding performance. |
| Databáze: | OpenAIRE |
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