Mechanical and flame retardant enhancement of EVA/MWCNTs neutron shielding composites irradiated with high-energy electr
- PDF / 3,896,289 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 108 Downloads / 274 Views
ORIGINAL PAPER
Mechanical and flame retardant enhancement of EVA/MWCNTs neutron shielding composites irradiated with high‑energy electron beam Wang Guo‑hui1,2 · Wu Guang‑hao2 · He Man‑li1,3 · Xu Tian‑han1 · Liu Yun‑fu1 · Yao Chu‑qing1 · Dai Yao‑dong1 Received: 21 May 2020 / Accepted: 28 August 2020 / Published online: 26 September 2020 © The Polymer Society, Taipei 2020
Abstract Using a melt-mixing technique, ethylene–vinyl acetate (EVA) copolymers based composites containing Multi-Wall Carbon nanotubes (MWCNTs), aluminum trihydrate (ATH), zinc borate (ZB), and gadolinium oxide ( Gd2O3) were fabricated. Then, the as-prepared samples were irradiated with an electron beam (EB) at the dose range varied from 0 to 275 kGy. Moreover, we investigated the properties of irradiated and unirradiated samples. Morphological observation showed good dispersion of MWCNTs and other additives in EVA. Furthermore, the gel content, mechanical properties, the limit oxygen index (LOI) values of irradiated composites increased to 28.4% after 250 kGy after irradiated. All the conclusions indicated that the comprehensive properties of the WMCNTs/EVA composites were improved by using high energy electron beam irradiation. Keywords Neutron shielding composites · Multiple-wall carbon nanotubes · Synergistic flame retardancy · High energy electron beam irradiation · Electron beam radiation effects
Introduction Because of the extensive development of nuclear techniques and equipment, radiation shielding concerns have considerably increased. Many researchers have developed various types of anti-radiation shielding materials such as alloy, concrete, glass, polymer, and ceramic. Singh et al. investigated radiation shielding properties of common alloy materials, such as CS-516, SS-403, and Cupero-Nickel [1]. Akkurt et al. compared photon shielding properties of barite and concrete contained with barite at different γ-ray energies [2]. Singh et al. prepared a glass system contains BaO using a melt-quenching technique and then compared radiation shielding property with lead. The results showed that the * Dai Yao‑dong [email protected] 1
Department of Nuclear Science and Technology, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China
2
Nuclear Power Institute of China, Nuclear Power Design and Research Sub-Institute, Chengdu 610000, PR China
3
The Army Engineering, University of PLA, Nanjing 210016, PR China
glass system exhibited more efficiency radiation shielding property and could be a potential choice to replace the conventional radiation shielding “concrete” [3]. Lambrecht et al. produced a new kind of metal-polymer disk with more lightweight and flexible and showed a more efficient gamma radiation shielding property [4]. Amritphale et al. prepared radiation shielding ceramic material. Furthermore, by using phosphate bonding barium composites produced by ceramic manufacturing technology, and the test results show that the half-value thickness of processed m
Data Loading...
