Influencing factors of oil absorption of micro-powdered aluminum hydroxide

Influencing factors of oil absorption of micro-powdered aluminum hydroxide

There are many factors that affect the oil absorption of the powder, such as the compactness of the product structure, and it is also related to its surface morphology and particle size. The finer the particles of the powder particles, the larger the surface area and the higher the oil absorption rate. Cylindrical type has a higher oil absorption rate than needle-shaped particles, and needle-shaped particles have a higher oil absorption rate than spherical particles because of the larger void ratio between them. In addition, the oil absorption rate is also closely related to the specific gravity of the powder. The larger the specific gravity of the powder, the lower the oil absorption rate.

The oil absorption rate of micro-powdered aluminum hydroxide is determined by the particle morphology, crystallinity and particle size distribution. Generally, it can be adjusted by adjusting the decomposition process of the product during the crystallization process and changing the operation of the product in subsequent steps such as filtering, breaking up, and drying. Conditions to improve the oil absorption rate of the product.