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| Study on Preparation and Properties of Flexible X-ray Shielding Paper Based on Multi-scale Aramid Network of PMIA/AF/ANF Loaded with CsPbBr3 |
| Received:December 25, 2025 Revised:January 05, 2026 |
| DOI：10.11981/j.issn.1000-6842.2026.02.116 |
| Key Words:aramid paper;CsPbBr3;X-ray shielding;wet-forming |
| Fund Project:国家自然科学基金（22409127，22578260）。 |
| Author Name | Affiliation | Postcode | | XING Jialong* | College of Bioresources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | SONG Shunxi* | College of Bioresources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | ZHANG Jingru* | College of Bioresources Chemical and Materials Engineering， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 |
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| 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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