Dispersion of aluminum pigments

Aluminum-silver paste contains a certain amount of slow volatile mineral oil and additives to ensure its good quality.
Storage stability and dispersibility, so the storage of aluminum paste is required to be airtight, otherwise the contact time with air will be long.
Will cause air-drying oxidation and lead to poor dispersion, paint film granulation, blackening and coarsening. In general, the secret is intact.
Closed packaging can be kept for more than a year. In order to achieve a satisfactory special effect, metal pigments must be used in the paint.
It is completely dispersed in the system, and the coating should be in a uniform state without fine particles. Aluminum scales are easily bent and broken, and are being coated.
If the material is stirred at high speed or processed continuously and violently, the geometric structure of the material can be easily broken.
Bad, resulting in coarse grain, dark color, reduced covering power, and metal migration and other bad phenomena. Therefore, it should not be used.
The dispersion means of high shear force. Suggestion: adopt the method of pre-dispersion; choose the appropriate solvent or several solvents first.
The solvent is added to the aluminum-silver paste at a ratio of 1:1 or 1:2.
Stir slowly until evenly (about 10~20min). Add wetting agent or dispersant to the system. In general production.
The aluminum-silver paste was soaked in solvent for several hours before stirring.