Lightweight and Wearable X‐Ray Shielding Material with Biological Structure for Low Secondary Radiation and Metabolic Saving Performance,Advanced Materials Technologies

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Lightweight and Wearable X‐Ray Shielding Material with Biological Structure for Low Secondary Radiation and Metabolic Saving Performance
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-06-14 , DOI: 10.1002/admt.202000240
Yaping Wang _{1,

2} , Rui Zhong ₃ , Qian Li _{1,

2} , Jiali Liao ₃ , Ning Liu ₃ , Neel S. Joshi _{2,

4} , Bi Shi _{1,

5} , Xuepin Liao _{1,

5} , Junling Guo _{1,

2,

4,

5}

Affiliation

Preventing X‐rays from reaching the human body is of great significance for the safe implementation of a wide range of related technologies. However, the current materials are commonly accompanied with low mechanical properties and backscatter radiation hazards. In this study, a structural material with high mass attenuation coefficients in a wide energy range (10–100 keV) is developed. The integration of high‐Z elements in hierarchical collagen nanofibers strongly reduces the backscatter radiation, resulting in only 28% of secondary radiation compared with a standard lead plate. The water vapor permeability of the engineered leather is nearly 340 times higher than commonly used synthetic and natural polymers. Compared with the commercial rubber‐based materials, the tensile strength of the engineered leather increased to 27.22 MPa (tenfold increase) and tear strength to 78.5 N mm⁻¹ (threefold increase), respectively. A fully tailored engineered leather suit provides a 24.7% lower metabolic rate of locomotion and 67% reduced body heat compared with commercial lead aprons, which can facilitate better performance and safety during intensive activities in the health care and nuclear industries. This work lays a foundation for the engineering of next‐generation X‐ray shielding materials with potential large impact on the X‐ray application landscape.

中文翻译：

具有生物结构的轻巧且可穿戴的X射线屏蔽材料，可降低二次辐射并节省代谢

防止X射线到达人体对于安全实施各种相关技术具有重要意义。但是，当前的材料通常伴随着低机械性能和反向散射辐射危害。在这项研究中，开发了一种在宽能量范围（10–100 keV）中具有高质量衰减系数的结构材料。高Z的集成分级胶原蛋白纳米纤维中的元素大大降低了反向散射辐射，与标准铅板相比，仅产生了28％的二次辐射。工程皮革的水蒸气渗透率比常用的合成和天然聚合物高近340倍。与商用橡胶基材料相比，工程皮革的拉伸强度增加到27.22 MPa（增加了十倍），撕裂强度增加到78.5 N mm ^-1（增加了三倍）。与商业化铅皮围裙相比，完全定制的工程皮革套装可提供24.7％的运动代谢率降低和67％的体热降低，从而可以在医疗保健和核工业的密集活动中促进更好的性能和安全性。这项工作为下一代X射线屏蔽材料的工程设计奠定了基础，该材料可能会对X射线应用前景产生重大影响。

更新日期：2020-07-10

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