Study on Preparation and Performance of γ-Ray Protection Coating

Abstract:

A kind of novel protective coating was prepared by using super-hydrophobic PbWO₄ nanocrystals as functional stuffing. The samples were characterized systematically by means of scanning electron microscope (SEM), contact angle analyzer, atomic force microscope (AFM) and Fourier transform infrared spectroscopy(FT-IR). The effects of various amount of nano-PbWO₄ particles on shielding ratio to 59.5 keV γ-ray were also discussed. The results revealed that the average diameter of PbWO₄ nanocrystals were about 32nm. The contact angle between the modified PbWO₄ and water was amounted to 153.08°, which showed that the modified PbWO4 owned super hydrophobic surfaces. The modified PbWO₄ had good dispersion and stability in organic solvents. Chemistry reaction happened between components of coatings and nano-PbWO₄ particles, thus it showed good compatibility with binders. The shielding ratio to γ-ray was up to 32%, and the hardness and levelling property was greatly improved.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 835-839
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.835
• Online since: December 2011
• Authors: Yuan Lin Zhou, Xiao Na Zhu, Ying Jun Li, Shao Tao Zheng, Li Li
• Keywords: Coating, PbWO₄ Nanocrystal, Shielding Ratio, γ-Ray

References

[1] A. El-sayed Abdo, M. A. M. Ali，M. R. Ismail, "Natural fire high-density poly-ethylene and lead oxide composites for radiation shielding", Radiation Physics and Chemistry, vol. 66 (2003), pp.185-195.

DOI: 10.1016/s0969-806x(02)00470-x

[2] G. A. Greene, C C Finfrock, C L Snead. Energy deposion in a thin copper target downstream and off-axis of a proton-radiography target[J]. Nuclear Instrument and Methods in Physics, vol. 197 (2002), pp.247-258.

DOI: 10.1016/s0168-583x(02)01342-3

[3] L. A, El-Guebaly, "ARIES-ST nuclear analysis and shield design", Fusion Engineering and Design, vol. 65 (2003), pp.263-284.

DOI: 10.1016/s0920-3796(02)00306-x

[4] S. E. G. Gwaily, "Galena/(NR+SBR)rubber composites as gamma radiation shields", Polymer Testing, vol. 21 (2002), pp.883-887.

DOI: 10.1016/s0142-9418(02)00023-5

[5] H. M. Mahmoud, E. Armia, "Attenuation and Scattering of Gamma-ray through Andesite and Felsite", J Radiat Res Radiat Process, vol. 19 (2001), pp.81-91.

[6] J. C. Claude, R. Perzynski, D. Salin, "Ionic Ferrofluids A Crossing of Chemistry and Physics", Magn Mater, vol. 85 (1990), p.27.

[7] S. Lefebure, E. Dubois, Cabuil V, et al, "Monodisperse magnetic nanoparticles: Preparation and dispersion in water and oils", J Mater Res, vol. 13 (1998), p.2975.

DOI: 10.1557/jmr.1998.0407

[8] M. H. Yamatoto, M. T. Ohata, "New macromolecular silane coupling agents synthesized by living anionic polymerization", Progress in Organic Coating, vol. 27 (1996), pp.277-285.

DOI: 10.1016/0300-9440(95)00544-7