中国塑料 ›› 2011, Vol. 25 ›› Issue (04): 65-68 .DOI: 10.19491/j.issn.1001-9278.2011.04.015

• 加工与应用 • 上一篇    下一篇

高填料、超厚防辐射屏蔽材料的研制

贺鹏 郭振涛 张龙 李铁军 康兴川 郑金美 李淑凤   

  1. 北京富迪创业科技有限公司
  • 收稿日期:2010-11-23 修回日期:1900-01-01 出版日期:2011-04-26 发布日期:2011-04-26

Study on Highly-filled and Over-thickness Radiation Protection Materials

HE Peng GUO Zhentao ZHANG Long LI Tiejun KANG Xingchuan ZHENG Jinmei LI Shufeng   

  • Received:2010-11-23 Revised:1900-01-01 Online:2011-04-26 Published:2011-04-26
  • Contact: ZHANG Long

摘要: 以富氢聚乙烯为基材,通过加入高填充量的中子吸收剂--硼化合物来制备高填料、超厚防辐射屏蔽材料。研究了聚乙烯熔体流动速率、碳化硼及氧化钆含量对防辐射屏蔽材料力学性能和屏蔽性能的影响,并探讨不同成型工艺对材料性表观性能的影响。结果表明,选用高熔体流动速率的高压低密度聚乙烯粉料及同等粒径的硼化合物作为填料,通过工艺条件设置和模具改进,能够制备出力学性能优异、内外观质量俱佳的高填料、超厚防辐射屏蔽材料,其中子屏蔽(削弱)系数大于6,伽玛屏蔽(削弱)系数大于8。

关键词: 填料, 厚度, 防辐射, 屏蔽材料, 富氢聚乙烯

Abstract: Based on rich hydrogen polyethylene with highly filled neutron absorber-boron compound, highly-filled and over-thickness radiation protection materials were prepared. The effects of melt flow rate of polyethylene and content of B4C and GdO on mechanical properties and shielding properties were studied. The effects of different molding process on the material characteristics were discussed. It showed that using powder of low density polyethylene with high melt flow rate and boron compound with a proper particle size, through proper processing condition and improved moulds, highly-filled and over-thickness radiation protection materials were produced with excellent mechanical properties and good quality of appearance. The neutron shielding factor was more than 6, and gamma shielding factor was more than 8.

Key words: filler, thickness, radiation protection, shielding material, hydrogen rich polyethylene