Application of Laser Particle Size Analyzer in Pigment Industry

The main components of pigments include colorants that provide color (such as inorganic pigments titanium dioxide, iron oxide, organic pigments phthalocyanine blue, etc.), extender pigments (such as calcium carbonate, barium sulfate, used for extension and improvement of performance) and additives for dispersion.

The particle size distribution of pigments is their core physical index and has a decisive influence on the final application performance.

1. Particle size directly determines optical properties: Particle size directly affects hiding power and tinting strength. There is an optimal particle size range (approximately 0.2-0.4 μm) that maximizes hiding power. The more uniform the particle size distribution, the higher the gloss of the paint film.

2. It profoundly affects the stability of the system: Finer particle size and greater specific surface area lead to higher system viscosity, but also greater flocculation. Uniform distribution prevents sedimentation and agglomeration during storage, avoiding defects such as floating color and blooming in the paint film.

Therefore, precise control of particle size distribution is as important as the selection of chemical composition, and is the key to ensuring product color, stability and final application effect.

This time, Winner2018 is recommended to test the particle size distribution of pigment. Winner2018 is a popular product with high cost performance. It has the advantages of easy operation, fast test speed, good repeatability and accuracy. The measurement range is 0.1-450μm. It is mainly used to test the particle size of water-insoluble metal powders, non-metal powders, other powders and solutions.

Measuring instrument information is as follows:

The video of measuring particles is as follows：