Hierarchical fibers-based breathable lead-free X-ray shielding fabrics via fractional-energy cyclic collisional attenuation

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-04-21 DOI:10.1016/j.compositesb.2025.112544

Shasha Wang , Wei Li , Leqian Wei , Zeyu Wang , Fujun Wang , Lu Wang , Jifu Mao

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Abstract

The increasing prevalence of medical X-rays has heightened the health risks associated with radiation exposure for both healthcare professionals and patients. However, existing lead-shielding products exhibit low shielding efficiency in the energy range of 20∼100 keV with large mass, high stiffness, airtight, low flexibility and potential toxicity, severely limiting their applications in wearable scenarios. In this work, a strategy of fractional-energy cyclic collisional attenuation of X-rays was proposed and achieved by design of hierarchically porous core-shell fibers with a shell of BaSO₄ (low-Z elements) and a core with high-Z elements (Bi₂O₃/WC). The multilayer woven lead-free fabric offers high X-ray absorption (81.6 %∼99.3 %) over the entire range of 20∼100 keV, excellent air permeability (>340 mm s⁻¹), high stretch (>500 %), ultra-low density (0.85 g cm⁻³), and good waterproof and thermal-conducting properties. The development of this pliable and user-friendly lead-free composite material opens new avenues for engineering advanced wearable systems with enhanced radiation protection capabilities and reduced weight.

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基于分层纤维的可呼吸无铅x射线屏蔽织物的分数能量循环碰撞衰减

医用x射线的日益普及，增加了与医疗保健专业人员和患者接触辐射有关的健康风险。然而，现有的铅屏蔽产品在20 ~ 100 keV的能量范围内具有较低的屏蔽效率，质量大、刚度高、不透气、柔韧性低和潜在的毒性，严重限制了其在可穿戴场景中的应用。在这项工作中，提出了一种分数能量循环碰撞衰减x射线的策略，并通过设计分层多孔核-壳纤维，其壳层为BaSO4（低z元素），芯层为高z元素（Bi2O3/WC）。多层机织无铅织物在整个20 ~ 100 keV范围内具有高x射线吸收率（81.6% ~ 99.3%），优异的透气性（>340 mm s - 1），高拉伸性（> 500%），超低密度（0.85 g cm - 3）以及良好的防水和导热性能。这种柔韧且用户友好的无铅复合材料的开发为工程先进的可穿戴系统开辟了新的途径，具有增强的辐射防护能力和减轻的重量。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.