期刊
PROGRESS IN NUCLEAR ENERGY
卷 112, 期 -, 页码 225-232出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pnucene.2019.01.001
关键词
Lead-free radiation shielding materials; Non-halogen flame retardant; Electron beam irradiation; Radiation cross-linking
资金
- environmental protection scientific research subject in Jiangsu province [2016003]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Natural Science Foundation of Jiangsu Province [SBK201404182]
Flame-retardant radiation shielding composites were processed using EVA matrix with magnesium hydroxide (Mg(OH)(2)), zinc borate (ZB) and bismuth oxide as filler materials. As filler content increased, the elongation at break and tensile strength of the materials decreased. Oxygen index (OD of composites was higher than 27.2% when ZB content exceed 14 wt%. mu(m) Azar of materials gradually increased with the increase of bismuth oxide when tested by Cs-137. On the contrary, mu(m) of materials decreased with the increase of bismuth oxide when tested by Co-60. Neutron shielding ratio of samples gradually increased with the increase of ZB when tested by Am-Be neutron source. Sample E with good comprehensive performances was selected and then modified by high energy EB irradiation. The mechanical properties, flame retardancy, and radiation shielding performances of modified composites were higher than those of the ordinary composites with the same filler mass fraction after being modified by electron beam irradiation with a dose of 175 kGy.
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