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《Radiation Protection》 2008-01
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STUDY AND PREPARATION OF A NOVEL FOAM RUBBER PRODUCT FOR γ-RAY SHIELDING

Zhou Yuanlin Song Kaiping He Fangfang Du Licheng Xie Changqiong(Key Laboratory for Advanced Building Materials of Sichuan Province,Southwest Scientific and Technical University,Sichuan Mianyang,621010)  
A novel filling material made of foam rubber product for γ-ray shielding was prepared,which is composed of PbWO_4 and WO_3 with mass fractions of WO_3 to PbWO_4 =40~60:60~40.The method of preparation was as follows.The PbWO_4-WO_3 was obtained by milling fined WO_3 and PbWO_4 deposition together for 1~2 h.The PbWO_4 deposition was gotten through the depositing reaction of Na_2WO_4 solution to Pb(Ac)_2 solution at quick agitation with dispersant and aid agent.The stability of the dispersion system composed of stuff and vulcanized rubber latex was very good.The shielding ratio to 59.5 keV γ-ray of the latex products made from the new fillers was up to 15%~18%,and tensile strength was up to 7.8~9.1 MPa and tearing stretch-rate was up to 700%~1000%.The results show low migration rate of Pb,meeting relevant national requirements.
【Fund】: 四川材料与工艺研究所资助项目
【CateGory Index】: TL7
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【Citations】
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