Neutron attenuation performance of EPDM rubber with BN Nanoparticles/B2O3 composite and studying physical, thermal and mechanical properties

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2024-07-02 DOI:10.1016/j.net.2024.06.019

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引用次数: 0

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 °C compared to unloaded EPDM is stable at 350 °C. Finally, the maximum macroscopic effective shielding behaviors and removal cross-section are estimated by incorporating h-BN 3 % into EPDM.

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三元乙丙橡胶与 BN 纳米粒子/B2O3 复合材料的中子衰减性能以及物理、热和机械性能研究

目前的研究重点是开发具有高衰减性能和强大机械性能的材料。纳米六方氮化硼（h-BN）由硼酸和尿素合成，然后在低温下加热。XRD、SEM、EDX-mapping 图像和 FTIR 对合成的纳米 h-BN和研磨的氧化硼（B2O3）进行了研究。制备了基于乙丙橡胶（EPDM）、不同浓度的 h-BN NPs 和 B2O3 的新型纳米复合材料。对纳米复合材料的物理、机械和热性能以及中子衰减行为进行了表征。通过测量 239Pu-α-9Be 中子源的快中子和总伽马射线衰减系数，确定了纳米复合材料的屏蔽性能。与未加载的三元乙丙橡胶相比，添加偶联剂（马来酸酐）可改善三元乙丙橡胶链与纳米填充物 h-BN 和 B2O3 之间的界面粘附性。结果表明，与未负载的三元乙丙橡胶（EPDM）相比，负载了纳米 h-BN 和纳米 h-BN/B2O3 的三元乙丙橡胶（EPDM）的拉伸强度（TS）明显提高，与未负载的三元乙丙橡胶（EPDM）相比，在 3 % h-BN/10 % B2O3 的浓度下（42 %），EPDM/纳米 h-BN/B2O3 的 TS 较高。此外，EPDM/3 % h-BN 和 EPDM/3 % h-BN/10 % B2O3 的热稳定性最高，可达 490 ℃，而未加载 EPDM 的热稳定性仅为 350 ℃。最后，通过在三元乙丙橡胶中加入 3% 的 h-BN 可估算出最大的宏观有效屏蔽行为和去除截面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development