基于PMIA/AF/ANF多尺度芳纶网络负载CsPbBr<sub>3</sub>的柔性X射线屏蔽纸的制备及性能研究

邢嘉龙; 宋顺喜; 张静茹

邢嘉龙,宋顺喜,张静茹.基于PMIA/AF/ANF多尺度芳纶网络负载CsPbBr₃的柔性X射线屏蔽纸的制备及性能研究[J].中国造纸学报,2026,41(2):116-124

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基于PMIA/AF/ANF多尺度芳纶网络负载CsPbBr₃的柔性X射线屏蔽纸的制备及性能研究

Study on Preparation and Properties of Flexible X-ray Shielding Paper Based on Multi-scale Aramid Network of PMIA/AF/ANF Loaded with CsPbBr₃

投稿时间：2025-12-25 修订日期：2026-01-05

DOI：10.11981/j.issn.1000-6842.2026.02.116

中文关键词: 芳纶纸 CsPbBr₃ X射线屏蔽湿法成形

Key Words:aramid paper CsPbBr₃ X-ray shielding wet-forming

基金项目:国家自然科学基金（22409127，22578260）。

作者	单位	邮编
邢嘉龙^*	陕西科技大学轻工科学与工程学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021	710021
宋顺喜^*	陕西科技大学轻工科学与工程学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021	710021
张静茹^*	陕西科技大学轻工科学与工程学院,陕西省造纸技术及特种纸品开发重点实验室,陕西西安,710021	710021

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中文摘要:

本研究通过引入间位芳纶（PMIA）长纤维构建宏观骨架，利用芳纶沉析纤维（AF）在微米尺度上实现纤维间的桥联与增韧，并以芳纶纳米纤维（ANF）构筑纳米黏结/包覆相，采用湿法成形工艺制备了PMIA/AF/ANF多尺度芳纶网络与全无机钙钛矿CsPbBr₃复合的X射线屏蔽纸（CPAA），实现了CsPbBr₃颗粒在纸张中的均匀分散与稳定负载，系统考察了CsPbBr₃添加量（27%~65%）对纸张形貌、力学性能及X射线屏蔽性能的影响。结果表明，添加适量CsPbBr₃可在保持芳纶纸连续性的同时显著提升X射线屏蔽纸的衰减能力；当CsPbBr₃添加量为53%时，制得CPAA-3在管电压20~70 kV下X射线衰减效率达58%~72%，拉伸强度保持在57.6 MPa，密度仅1.08 g/cm³，远低于传统铅基材料。本研究制备的X射线屏蔽纸兼具轻质、柔韧、高效屏蔽等优势，其屏蔽性能增强主要归因于Cs与Pb的K吸收边互补效应，以及芳纶纸多孔结构对X射线的多次散射增强作用。

Abstract:

In this study， a macroscopic framework was constructed using long para-aramid （PMIA） fibers， while aramid precipitated fibers （AF） were employed to bridge and toughen the PMIA fibers at the micrometer scale. Furthermore， aramid nanofibers （ANF） were used to form a nano-bonding/coating phase. Using a wet-forming process， the PMIA/AF/ANF multi-scale aramid networks were combined with the all-inorganic perovskite CsPbBr₃ to create X-ray shielding paper， achieving uniform dispersion and stable loading of CsPbBr₃ particles within the paper. The effects of CsPbBr₃ addition amount （27%~65%） on the paper’s morphology， mechanical properties， and X-ray shielding performance were systematically investigated. The results showed that adding an appropriate amount of CsPbBr₃ significantly enhanced the attenuation capacity of X-ray shielding paper while maintaining the continuity of the aramid paper. When the CsPbBr₃ addition amount was 53%， the prepared CPAA-3 achieved X-ray attenuation efficiency of 58%~72% at tube voltage of 20~70 kV， with a tensile strength of 57.6 MPa and a density of only 1.08 g/cm³， which was far lower than that of traditional lead-based materials. The prepared X-ray shielding paper in this study combined the advantages of light weight， flexibility， and high-efficiency shielding. Its enhanced shielding performance was primarily attributed to the complementary K-edge absorption effects of Cs and Pb， as well as the enhanced multiple scattering of X-rays by the porous structure of the aramid paper.

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