Laser Scattering Particle Size Distribution Analyses of Pigments

摘要

The degree of pigment dispersion determines the coating's characteristics and performance. Through the use of the laser scattering particle size analyzer, measurements of particle size distribution range define the actual state of dispersion and, eventually, the characterization of military coating materials and other paint products. Standard materials (e.g., latex spheres of different particle sizes) were chosen to validate the operation of the instrument and to cover the wide dynamic range of the instrument's measurement and capability. Post-validation runs were made on several coating materials, including a polydispersed paint conforming to the U.S. Department of the Army military specification MIL-C-53039A, 'Coating, Aliphatic Polyurethane, Single Component, Chemical Agent Resistant,' 1 August 1989. This report details the instrumental parameters and sample preparation procedures used for the determinations. Additionally, the results of analysis are graphically displayed and discussed. A brief description of merited future work is also provided.