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《Journal of Functional Materials》 2014-18
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Preparation and study of γ-ray protective properties of lead tungstate rubber composite

WANG Li;ZHOU Yuan-lin;LI Ying-jun;State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest University of Science and Technology;  
In this paper,lead tungstate(PbWO4)crystals with two different morphologies have been synthesized via a direct precipitation method by using various surfactants.All of crystals will lead to good mechanical properties andγ-ray protective performance of PbWO4 rubber composite when they were added into natural rubber latex as functional units.By using XRD,SEM,fluorescence(PL),electronic universal testing machine and NaI(TI)detectors,the structure and property of microcrystals have been analyzed,the mechanical properties andγ-ray protective performance of composite rubber have been characterized.The results indicated that PbWO4 microcrystals were well dispersed in natural rubber latex.PbWO4 crystals with better photoluminescence properties will present higherγ-ray shielding rates which reaches the highest value of 20.79%(filler content 30%).And smaller size of PbWO4 crystals which dispersed well in natural rubber latex will contribute to improvingγ-ray shielding rate.The mechanical strength was significantly higher than those pure natural latex without adding PbWO4 crystals.
【Fund】: 国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(11176026);; 四川省非金属复合与功能材料国家重点实验室开放基金资助项目(13zxfk07)
【CateGory Index】: TQ330.1
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