Fluorocarbon Coating Pigments Must Pay Attention to Several Characteristics

Fluorocarbon paint in the production process of the pigment should have the following properties: superior light resistance, weather resistance, low temperature resistance; good hiding power, tinting strength, bonding; no bleeding, no migration; high quality acid resistance, alkali resistance, chemical resistance.

good connection

in the fluorocarbon coating preparation process, the pigment needs to be well connected to the base material, has reached the desired fineness. Whether it is solvent-based fluorocarbon coatings or water-based fluorocarbon coatings are increasingly using pigment color paste, one is anti-pollution, and the other is high production efficiency.

Light resistance • Weather resistance

pigments play an important role in the full play of the performance of fluorocarbon coatings for outdoor anti-corrosion coatings. Therefore, the light resistance and weather resistance of pigments are very important indicators.

acid resistance

fluorocarbon coatings in the field of heavy-duty corrosion are often exposed to high salt spray and other different acidic environments. When purchasing this pigment, we should pay attention to its acid resistance, so as to better ensure the acid resistance of the coating and better apply to outdoor corrosion.

water resistance

Pigments with poor water resistance affect the performance and appearance of fluorocarbon paint films, such as poor water resistance, easy water seepage, black spots and streaks. With the improvement of R & D and production level, the water resistance of most pigments in the current raw material market is excellent.

Solvent resistance

Fluorocarbon Coating Performance Index-Solvent Resistance Test Operation: Use xylene or butanone to wipe the paint film manually or directly by machine for 200 times or more to check whether the paint film is damaged. For this, the pigment used is required to have certain solvent resistance, which is due to caution when purchasing.

Alkali resistance

coatings, attention should be paid to the alkali resistance of pigments, because some pigments are not alkali resistant, such as chrome yellow, iron blue and some inorganic pigments, and special attention should be paid when using them.

good coloring rate

No bleeding, no migration is the basic requirements of the coating pigment, good coloring rate is the coating color, gloss, fullness and so on more excellent.

mixed

the specific gravity of some pigments is too different, which is prone to delamination or floating color of the coating film after coating. Some pigments are easy to produce chemical reactions when mixed. For example, acid-resistant pigments are not easy to mix with alkali-resistant pigments, and lead-containing pigments are not easy to mix with sulfur-containing pigments.

heat resistance

organic pigment is mainly affected by the medium to be colored, and poor heat resistance causes a change in hue, that is, a change in hue and tinctorial strength.

resistance to blooming

organic pigments bloom, a colored deposition layer is formed on the surface of the coating, which can be wiped off. Blooming is caused by the recrystallization of some organic pigments dissolved in the solvent or binder at higher temperatures. The blooming phenomenon usually appears immediately after the paint film is baked, sometimes it does not appear for a period of time, and sometimes it appears continuously. At this time, the method of wiping cannot prevent its occurrence.

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