Bi₂O₃/La₂O₃/ 芳纶沉析纤维/碳纤维复合无铅X射线屏蔽纸的制备及性能研究

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作者简介：，在读博士研究生；主要从事高性能纤维及纸基功能材料等方面的研究。

关键词：芳纶纤维；X射线屏蔽；氧化铋；氧化镧中图分类号：TS767 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.12.012

Preparationand Performance Studyof Bi2O3/La2O3/ AramidPulpFibers/CarbonFiberCompositeFlexible Lead-freeX-rayShieldingPaper

WANG Wenbo'HUA Li 1，2 GUO Zizhan'JIA Fengfeng1.2YANG Pengbo1LU Zhaoqing1.2.3.*

（1.CollgofiresouesCmcalndMaterialsEgineing，aniProvceKyLabfPapermakingThologndSecialtype，

ShanxiUnivesitfece&hlog'airoe;ireashood ShaanxiProvince，o;.QiluUiversityocholg（ndogAcadeyfienes），J'nanandongrovine5） （ * E-mail：luzhaoqing302@163.com）

Abstract：Inthisstudy，Bi2O3/La 2 O3/aramid precipitated fiber/carbon fiber composite paper （BLCP） by utilizing aramid precipitated fiber （AF）andcarbonfiber（CF）asreiforcementskeletonsasprepared.Thisinovativecompositeincorporateddualhigatomic-ber（Z） functional fillers， Bi2O3 and La203 ，and was produced through a combination of vacuum filtration and phenolic resin impregnation-curing processes.The results revealed a uniform dispersion of Bi2O3 and La203 throughout the AF/CF matrix. The internal porous structure of the compositeextendedeprogaatsfX-rdicreadtfqcofpocolssfaciliatigtsaoo the photoelectric effect and Compton scattering. Moreover，the combination of Bi2O3 and La2O3 demonstrated a synergistic attenuation ffect on X-ray，significantly enhancing the shielding performance.Specifically，the BLCP containing O.5 g each of Bi2O3 and La2O3 fillers exhibited X-ray shielding efficiencies ranging from 69.3% to 85.8% within the 20～70kV tubevoltage range.This material was notable for its lightweightproperties （with a thickness of 0.505mm and a density of 0.37g/cm3 ），flexibility （0.22MJ/m3） ），and environmental friendliness. Keywords： aramidfiber； X-ray shielding；bismuth oxide; lanthanum oxide

X射线是一种具有高穿透性的电磁辐射，被广泛应用于临床诊断、食品加工、X射线成像等领域2]。（剩余14766字）