摘要
如何快速准确地测量微米及亚微米级颗粒的尺寸分布是一个有待解决的问题。作者在对应用光全散射理论测量颗粒尺寸分布进行理论分析和数值模拟的基础上,行了实验研究。本文给出了作者应用该方法测量聚苯乙烯标准颗粒和二氧化钛的实验结果。结果表明,作者提出的用光全散射法测量颗粒尺寸分布的两种算法是正确的,从0.17～9.85μm共6种标准颗粒的测量结果均与其名义尺寸吻合得很好。实验结果还表明,测量时Ⅰ/Ⅰ_0值控制在0.4～0.9为宜。
In order to measure the size distribution of fine particles using the total light scattering method, the authors have developed two kinds of algorithms and carried out the theoretical analysis and numerical Simulations. To further confirm the method, some experiments were performed. This paper presents some experimental results. In the experiments, several kinds of polystyrene latex particles ranged from 0.17 μm to 9.85μm and TiO_2 powder were measured. Good agreement is found between the experimental results and the nominal size of the particles. The situation is just the same for the mixture of latices. The experimental results show that the total light scattering method, can rapidly and precisely measure the fine particle size distribution. During the measurement, the Value of Ⅰ/Ⅰ_0 should be within 0.4～0.9.
关键词
光散射
颗粒度
Total light scattering
Particle size
Particle size distribution
