Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Neutron attenuation performance of EPDM rubber with BN Nanoparticles/B2O3 composite and studying physical, thermal and mechanical properties

  • H.M. Eyssa (Radiation Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority) ;
  • Nabila A. Maziad (Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority) ;
  • Wagdy Kansouh (Nuclear Research Centre, Egyptian Atomic Energy Authority (EAEA)) ;
  • Wageeh Ramadan (Radiation Protection and Safety Department, Hot Labs. Centre, Egyptian Atomic Energy Authority (EAEA))
  • Received : 2024.01.30
  • Accepted : 2024.06.14
  • Published : 2024.11.25
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Abstract

The current study has focused on evolving materials with high attenuation performance and vigorous mechanical properties. Nano hexagonal boron nitride (h-BN) has been synthesized from boric acid and urea and then heated at a low temperature. XRD, SEM, EDX-mapping images, and FTIR investigated the nano h-BN synthesized and boron oxide (B2O3) milled. The new nanocomposites based on ethylene propylene diene rubber (EPDM), different concentrations of h-BN NPs, and B2O3 have been prepared. The physical, mechanical, and thermal properties and neutron attenuation behavior of nanocomposites were characterized. The shielding properties were determined by measuring the fast neutrons and total gamma-ray attenuation coefficients of the 239Pu-α-9Be neutron source. It was seen that adding a coupling agent (maleic anhydride) was appropriate for improving interfacial adhesions between EPDM chains and the nanofiller h-BN and B2O3 compared to EPDM unloaded. From the results, we observe that EPDM loaded with nano h-BN and nano h-BN/B2O3 was noticeably boosted over that of the unloaded EPDM for tensile strength (TS), EPDM/nano h-BN/B2O3 had a high TS at a concentration of 3 % h-BN/10 % B2O3 (42 %) compared with unloaded EPDM. Moreover, EPDM/3 % h-BN and EPDM/3 % h-BN/10 % B2O3 had the highest thermal stability until 490 ℃ compared to unloaded EPDM is stable at 350 ℃. Finally, the maximum macroscopic effective shielding behaviors and removal cross-section are estimated by incorporating h-BN 3 % into EPDM.

Keywords

Acknowledgement

The authors are very grateful to Labs, for Developing Nuclear Techniques to Detect Landmines and Illicit Materials for his constructive debate and collaborative efforts in the experimental work. The authors thank Prof. Dr. Ahmed Abdelsalam, Metallurgy Dept., Nuclear Research Center, Egyptian Atomic Energy Authority, and Cairo, Egypt. To support and provide the muffle furnace used to prepare h-BN nanoparticles.

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