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Research on performance improvement measures for medical radiation shielding film through removal of air bubbles and pinholes
Radiation Effects and Defects in Solids ( IF 1.1 ) Pub Date : 2021-06-08 , DOI: 10.1080/10420150.2021.1935944
Seon-Chil Kim 1
Affiliation  

Conventional radiation shielding materials used in medical institutions, such as lead, are gradually being replaced by other environment-friendly materials. However, owing to limitations in processing technology, it is difficult to satisfy requirements such as light weight and low thickness and achieve the same shielding performance as that of lead. Therefore, in this study, the processing conditions used to manufacture the radiation shielding film were analyzed. Tungsten oxide was selected as the radiation shielding material, with polydimethylsiloxane (PDMS) as the base material. Factors in the manufacturing process that affect shielding performance include the amount of shielding material, the use of plasticizer in the compounding process, the aging time before compression molding to disperse the shielding material in the base material, and the compression molding temperature. The shielding performance of shielding films was compared and evaluated. The shielding performance was found to be proportional to the amount of shielding material, and the use of plasticizer facilitated the improvement of shielding performance by chemically and stably removing air bubbles. Aging time of 12 h improved the shielding performance, and high compression molding temperature (70°C) improved the shielding performance. These findings confirm the importance of multiple process technology factors in improvement of shield performance.



中文翻译:

通过去除气泡和针孔提高医用辐射屏蔽膜性能的研究

医疗机构使用的常规辐射屏蔽材料,如铅等,正逐渐被其他环保材料所取代。但由于加工工艺的限制,难以满足重量轻、厚度薄等要求,难以达到与铅相同的屏蔽性能。因此,在本研究中,分析了用于制造辐射屏蔽膜的加工条件。选择氧化钨作为辐射屏蔽材料,以聚二甲基硅氧烷(PDMS)为基材。制造过程中影响屏蔽性能的因素包括屏蔽材料的用量、复合过程中增塑剂的使用、压缩成型前的老化时间以将屏蔽材料分散在基材中,和压缩成型温度。比较和评价屏蔽膜的屏蔽性能。发现屏蔽性能与屏蔽材料的量成正比,增塑剂的使用通过化学和稳定地去除气泡来促进屏蔽性能的提高。12 h 的老化时间提高了屏蔽性能,高压缩成型温度(70°C)提高了屏蔽性能。这些发现证实了多种工艺技术因素在提高屏蔽性能方面的重要性。增塑剂的使用通过化学稳定地去除气泡,促进了屏蔽性能的提高。12 h 的老化时间提高了屏蔽性能,高压缩成型温度(70°C)提高了屏蔽性能。这些发现证实了多种工艺技术因素在提高屏蔽性能方面的重要性。增塑剂的使用通过化学稳定地去除气泡,促进了屏蔽性能的提高。12 h 的老化时间提高了屏蔽性能,高压缩成型温度(70°C)提高了屏蔽性能。这些发现证实了多种工艺技术因素在提高屏蔽性能方面的重要性。

更新日期:2021-08-12
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