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| Preparation and Performance Study of Bi2O3/La2O3/Aramid Pulp Fibers/Carbon Fiber Composite Flexible Lead-free X-ray Shielding Paper |
| Received:June 05, 2025 Revised:July 24, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.12.012 |
| Key Words:aramid fiber X-ray shielding bismuth oxide lanthanum oxide |
| Fund Project:陕西省军民融合专项（陕融办发【2024】22号）；中国博士后科学基金面上项目（2025M772524）；国家自然科学基金项目（22378248，22508239）；高性能薄型高强电子载带纸机新材料制备关键技术与产业化（JHXM2025188）。 |
| Author Name | Affiliation | Postcode | | WANG Wenbo* | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021 | 710021 | | HUA Li | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021
Shaanxi Paro New Materials Technology Co., Ltd., Xi’an, Shaanxi Province, 710075 | 710075 | | GUO Zizhan | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021 | 710021 | | JIA Fengfeng | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021
Shaanxi Paro New Materials Technology Co., Ltd., Xi’an, Shaanxi Province, 710075 | 710075 | | YANG Pengbo | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021 | 710021 | | LU Zhaoqing* | College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper,Shaanxi University of Science & Technology,Xi’an,Shaanxi Province,710021
Shaanxi Paro New Materials Technology Co., Ltd., Xi’an, Shaanxi Province, 710075
Qilu University of Technology (Shandong Academy of Sciences), Ji’nan, Shandong Province, 250353）
（*E-mail：luzhaoqing302@163. com | 250353 |
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| Abstract:In this study， Bi2O3/ La2O3/aramid precipitated fiber/carbon fiber composite paper (BLCP) by utilizing aramid precipitated fiber (AF) and carbon fiber (CF) as reinforcement skeletons was prepared. This innovative composite incorporated dual high-atomic-number (Z) functional fillers, Bi2O3 and La2O3, and was produced through a combination of vacuum filtration and phenolic resin impregnation-curing processes. The results revealed a uniform dispersion of Bi2O3 and La2O3 throughout the AF/CF matrix. The internal porous structure of the composite extended the propagation paths of X-ray and increased the frequency of photon collisions, facilitating efficient scattering through both the photoelectric effect and Compton scattering. Moreover, the combination of Bi2O3 and La2O3 demonstrated a synergistic attenuation effect on X-ray, significantly enhancing the shielding performance. Specifically, the BLCP containing 0.5 g each of Bi2O3 and La2O3 fillers exhibited X-ray shielding efficiencies ranging from 69.3% to 85.8% within the 20~70 kV tube voltage range. This material was notable for its lightweight properties (with a thickness of 0.505 mm and a density of 0.37 g/cm3), flexibility (0.22 MJ/m3), and environmental friendliness. |
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