期刊
JOURNAL OF NUCLEAR MATERIALS
卷 453, 期 1-3, 页码 48-53出版社
ELSEVIER
DOI: 10.1016/j.jnucmat.2014.06.026
关键词
-
资金
- Agency for Defense Development [UC080023GD]
- World Class Institute (WCI) Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning, Republic of Korea
Nano-sized boron carbide (B4C) and boron nitride (BN) powder were prepared using ball milling. Micro- and milled nano-powders were melt blended with high density polyethylene (HDPE) using a polymer mixer followed by hot pressing to fabricate sheet composites. The tensile and flexural strengths of HDPE nanocomposites were similar to 20% higher than their micro counterparts, while those for latter decreased compared to neat HDPE. Thermal neutrons attenuation of the prepared HDPE nanocomposites was evaluated using a monochromatic similar to 0.025 eV neutron beam. Thermal neutron attenuation of the HDPE nanocomposites was greatly enhanced compared to their micro counterparts at the same B-10 areal densities. Monte Carlo n-Particles (MCNP) simulations based on the lattice structure modeling also shows the similar filler size dependent thermal neutron absorption. (C) 2014 Elsevier B.V. All rights reserved.
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