Nuclear Engineering and Technology

  • 제48권6호
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  • Pages.1396-1403
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  • 2016
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Preparation and Properties of the Fast-Curing γ-Ray-Shielding Materials Based on Polyurethane

  • Ni, Minxuan (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Tang, Xiaobin (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Chai, Hao (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Zhang, Yun (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Chen, Tuo (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics) ;
  • Chen, Da (Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics)
  • 투고 : 2016.01.27
  • 심사 : 2016.06.03
  • 발행 : 2016.12.25
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초록

In this study, fast-curing shielding materials were prepared with a two-component polyurethane matrix and a filler material of PbO through a one-step, laboratory-scale method. With an increase in the filler content, viscosity increased. However, the two components showed a small difference. Curing time decreased as the filler content increased. The minimum tack-free time of 27 s was obtained at a filler content of 70 wt%. Tensile strength and compressive strength initially increased and then decreased as the filler content increased. Even when the filler content reached 60 wt%, mechanical properties were still greater than those of the matrix. Cohesional strength decreased as the filler content increased. However, cohesional strength was still greater than 100 kPa at a filler content of 60 wt%. The ${\gamma}$-ray-shielding properties increased with the increase in the filler content, and composite thickness could be increased to improve the shielding performance when the energy of ${\gamma}$-rays was high. When the filler content was 60 wt%, the composite showed excellent comprehensive properties.

키워드

참고문헌

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피인용 문헌

  1. Efficient, flexible and lead-free composite based on room temperature vulcanizing silicone rubber/W/Bi2O3 for gamma ray shielding application vol.29, pp.14, 2016, https://doi.org/10.1007/s10854-018-9344-1
  2. Synthesis and characterization of the POSS/PCL-graphene oxide composites; the effects of gamma-radiation on its thermal properties and molecular weight vol.6, pp.12, 2019, https://doi.org/10.1088/2053-1591/ab59b1