【摘要】 荧光素钠（FSS）在聚集状态下会出现荧光淬灭问题，利用与SiO₂纳米材料复合避免了FSS与光聚物共混引起荧光染料的聚集。利用反相微乳液法将FSS掺入SiO₂纳米粒子中，使用阳离子聚电解质聚二甲基二烯丙基氯化铵（PDADMAC）作为偶联剂，制备了稳定、可分散于3D打印材料的荧光纳米二氧化硅（FSS-SiNPs）。采用扫描电镜、傅里叶变换红外光谱、Zeta电位测试、紫外吸收光谱、荧光发射光谱对FSS-SiNPs杂化粒子进行表征，结果表明合成了FSS-SiNPs杂化粒子；与FSS的荧光光谱进行对比，FSS-SiNPs杂化粒子表现出较高的荧光强度；染料泄露性能测试表明，FSS-SiNPs杂化粒子在乙醇溶液中浸泡12 h后，荧光强度逐渐稳定并保持在95%左右。随着温度的升高，3D打印件的热稳定性和光稳定性均有所下降，但是相比于FSS制备的打印件，FSS-SiNPs制备的打印件热稳定性和光稳定性分别提高了14%、21%。更多还原

【Abstract】 Fluorescein sodium（FSS）had a problem of fluorescence quenching in the aggregated state.However, by combining FSS with SiO₂ nanomaterials, the aggregation of fluorescent dyes caused by the blending of FSS and photopolymers could be avoided.The cationic polyelectrolyte polydimethyldiallylammonium chloride（PDADMAC）was used as the coupling agent to incorporate FSS into SiO₂ nanoparticles with the inverse microemulsion method, thus preparing stable and dispersible fluorescent materials used for 3 D printing.By scanning this fluorescent materials with electron microscopy, Fourier transform infrared spectroscopy, Zeta potential test, UV absorption spectrum and fluorescence emission spectrum, the study got the results which show that FSS-SiNPs hybrid particles are synthesized.Comparing with the fluorescence spectra of FSS,FSS-SiNPs hybrid particles show higher fluorescence intensity.Besides, dye leakage performance test indicates that after FSS-SiNPs hybrid particles are soaked in ethanol solution for 12 h, the fluorescence intensity is gradually stabilized and remained at about 95%.The thermal stability and photostability of 3 D printed parts decrease with the increase of temperature though, comparing with the printed parts prepared by FSS,the aforementioned two performances of the printed parts prepared by FSS-SINPS increases by 14% and 21%,respectively.更多还原