基于中低频超声波的纳米颗粒粒径测量
Particle Size Measurement of Nanoparticles Based on Ultrasonic Wave with Low and Medium Frequencies
摘 要
以ECAH理论模型为基础研究了基于中低频超声波测量纳米TiO2颗粒在分散液中平均粒径及粒径分布的测量理论和试验方法, 通过建立起纳米颗粒粒径分布与超声衰减谱之间的关系, 利用最优正则优化算法反演得到纳米颗粒的粒径分布。结果表明: 该方法的测量结果与透射电镜图像测量以及高速离心沉降纳米粒径分析仪的测量结果吻合较好, 表明了该方法测量纳米颗粒粒径分布的可行性与可靠性。
超声衰减谱
反演
particle size distribution
ultrasonic attenuation spectrum
inversion
Abstract
Based on ECAH theoretical model, the measurement theory and test method of average nanoparticle size and particle size distribution of the titania nanoparticles in dispersive solution using ultrasonic wave with low and medium frequencies were studied. Through the establishing of relation between nanoparticle size distribution and ultrasonic attenuation spectrum, the nanoparticle size distribution could be obtained by optimal regular optimization algorithm inversion. The results show that the test results obtained by the method agreed well with the measurement results of TEM images and high speed centrifugal sedimentation nanoparticle analyzer, which indicated that measuring the particle size distribution of nanometer particles with the method was feasible and reliable.
中图分类号 TB52
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收稿日期 2010/5/15
修改稿日期 2011/3/10
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备注侯怀书(1972-), 男, 山东潍坊人, 讲师, 博士。
引用该论文: HOU Huai-shu,ZHANG Suo-huai. Particle Size Measurement of Nanoparticles Based on Ultrasonic Wave with Low and Medium Frequencies[J]. Materials for mechancial engineering, 2011, 35(5): 80～82
侯怀书,张锁怀. 基于中低频超声波的纳米颗粒粒径测量[J]. 机械工程材料, 2011, 35(5): 80～82
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参考文献
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【3】POVEY M J W. Acoustic methods for particle characterisation[J].KONA, 2006, 24:127-133.
【4】EPSTEIN P S, CARHART R R. The absorption of sound in suspensions and emulsions: I. water fog in air[J].J Acoust Soc Am, 1953, 25:553-565.
【5】ALLEGRA J R, HAWLEY S A. Attenuation of sound in suspensions and emulsions: theory and experiments[J].J Acoust Soc Am, 1972, 51:1545-1564.
【6】苏明旭, 万振刚, 余大勇, 等.超声测粒理论中的正反问题研究[J].中国粉体技术, 2001(6):8-15.
【7】DUKHIN A S, GOETZ P J, WINES T H, et al. Acoustic and electroacoustic spectroscopy[J].Colloids and surfaces A: Physicochemical and Engineering Aspects, 2000, 173:127-158.
【8】RIEBEL U, LOFFLER F. The fundamentals of particle size analysis by means of ultrasonic spectrometry[J].Particle & Particle Systems Characterization, 1989, 6(3):135-143.
【9】田坦, 樊世斌, 关浩.大动态范围水声脉冲信号的精确幅度测量及应答[J].声学学报, 1995, 20(1):42-48.
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