2024 - Sustainable Industrial Processing Summit
SIPS 2024 Volume 8. Monteiro Intl. Symp / Composite, Ceramic and Nano Materials Processing
| Editors: | F. Kongoli, P. Assis, H.A.C. Lopera, S. Diaz, V. Scarpini Candido |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2024 |
| Pages: | 288 pages |
| ISBN: | 978-1-998384-18-1 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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CALCULATION OF THE TRANSMISSION FACTOR FOR ELECTROMAGNETIC RADIATION AND NEUTRONS FOR COMPOSITES BASED ON EPOXY RESIN AND SILICA NANOPARTICLES
Ary Machado de Azevedo1; Thomaz Jacintho Lopes2; Marcos Paulo Cavaliere de Medeiros1; Fernando Manuel Araújo Moreira1; Sergio Monteiro1; André Ben-Hur da Silva Figueiredo1;1MILITARY INSTITUTE OF ENGINEERING, Rio de Janeiro, Brazil; 2MILITARY INSTITUTE OF ENGINEERING, Duque de Caxias, Brazil;
Type of Paper: Regular
Id Paper: 216
Topic: 18
Abstract:
Composite materials are engineered by combining two or more materials with distinct properties, yielding a material with superior characteristics compared to its individual components. These composites often find application in shielding against ionizing radiation [1]. This study aims to assess the transmission factors of an epoxy matrix composite embedded with silica (SiO2) nanoparticles, at proportions of 10%, 30%, and 40%, for electromagnetic radiation and neutron shielding purposes. A computational model was developed to evaluate radiation transmission through simulations using the Monte Carlo method with MCNP5 [2],[3]. Three composite configurations with varying silica nanoparticle concentrations in the matrix were analyzed. The experimental setup was chosen based on prior research, with a sphere radius of 1 cm adopted. The simulations encompassed fast neutrons (8 MeV, 6 MeV, and 1 MeV), epithermal neutrons (1 eV), and thermal neutrons (0.025 eV and 0.001 eV) [4],[5]. Tally F1 was utilized for both photons and neutrons, discretized into 100 energy intervals to gather transmission factor data [6]. Notably, no significant alteration was observed in electromagnetic radiation transmission with the addition of material across the studied energy levels. However, the composite materials exhibited favorable attenuation properties for fast and thermal neutrons. Particularly, a substantial enhancement in shielding efficiency against 1 MeV neutrons was noted with the incorporation of fibers. Consequently, the composite material demonstrated superior performance in shielding fast neutrons, aligning with existing literature [7]. Furthermore, the composite exhibited a notable upscattering rate, prompting further investigation into the contributing elements.