| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7967477 | Journal of Nuclear Materials | 2014 | 20 Pages |
Abstract
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 â¼20% 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 â¼0.025Â 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.
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Nuclear Energy and Engineering
Authors
Jaewoo Kim, Byung-Chul Lee, Young Rang Uhm, William H. Miller,