Preparation and mechanical characterization of (rubber blend - micro lead) rubbery composites for shielding application

IF 0.9 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
M. H. Naeem, S. H. Hadi Al-Nesrawy, M. H. Al-Maamori
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引用次数: 0

Abstract

This present work, includes the preparation of rubber batches containing silicone rubber (SIR) (80pphr) and polyurethane (PU) (20pphr) with micro-lead powder in different loading, respectively (0,20.40,60,80,100,150,200,250,300pphr). The mechanical properties measured the device universal tensometer, such as tensile strength, elongation and modulus of elasticity, according standard specified of (ASTM D-412) were followed and the hardness property measured by (Hardness Shore A) was put through its steps according to the standard specification (ASTMD-1415). The results were selected, and the sample (10) consisting of (SIR 80/PU20 and micro-lead 300pphr) was chosen because it is more suitable for the required mechanical properties. The results observed that the ratios of micro-lead loading increased, the tensile and elongation decreased, and the hardness and elastic modulus increased. Rubber batches reinforced with micro-lead were exposed to an infrared (FTIR) test device with the addition of hexane, where there were no changes in the infrared spectrum of the rubber composites (SIR80/PU20/Micro-Pb). Sample No. (10) was shown that the scanning electron microscope (SEM) before and after adding hexane, where it was noted that the image (A) without hexane, the absence of homogeneity of lead. As for image (B) in the presence of hexane, we note the homogeneity of lead and the distribution of lead equally, so that radiation examination were measured the Geiger counter of two sources of radioactive elements were used, the caesium source Cs137 and the cobalt source Co60. The radiation is attenuated through the material, while the thickness of the half (X1/2) gradually contrasts according to the attenuation of the radiation. This work is applied in the applications of shields as a protective suit against harmful radiation.
屏蔽用(橡胶共混-微铅)橡胶复合材料的制备及力学性能
本论文主要研究了硅橡胶(SIR) (80pphr)和聚氨酯(PU) (20pphr)的橡胶批次的制备,微铅粉的掺量分别为0、20.40、60、80、100、150、200、250、300pphr。采用ASTM d -1415标准对设备万能拉力仪测得的拉伸强度、伸长率、弹性模量等力学性能进行了测试,并按ASTM d -1415标准对硬度计进行了测试。对结果进行了选择,选择了由(SIR 80/PU20和微铅300pphr)组成的样品(10),因为它更适合所需的力学性能。结果表明:微铅加载比增大,拉伸率和伸长率降低,硬度和弹性模量增大;在正己烷的加入下,将微铅增强橡胶批暴露在红外(FTIR)测试装置中,橡胶复合材料(SIR80/PU20/Micro-Pb)的红外光谱没有变化。样品没有。(10)显示了添加己烷前后的扫描电子显微镜(SEM),其中可以注意到,图像(A)中没有添加己烷,铅的均匀性不存在。对于正己烷存在下的图像(B),我们注意到铅的均匀性和铅的均匀分布,因此使用铯源Cs137和钴源Co60两种放射性元素源的盖革计数器进行辐射检测。辐射通过材料衰减,而一半(X1/2)的厚度根据辐射的衰减逐渐变化。该研究成果可应用于作为防护服的防护罩,以抵御有害辐射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Optoelectronic and Biomedical Materials
Journal of Optoelectronic and Biomedical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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