Pearlescent pigments are used in casting resins

Pearlescent pigments are used in casting resins

   Pearlescent pigments are mainly used in the manufacture of buttons in casting molding. The amount of pearlescent pigments used in cast polyester is relatively low. Generally, adding 1-1.5% color paste (pigment concentration 30-35%) can produce very Good pearlescent effect. Color-changing pigments, fluorescent pigments

Pearlescent pigments used in latex products

Pearlescent pigments with medium and fine particle size are better for latex products (such as pearlescent balloons). Pay attention to the following points when applying:

1. Try to use transparent latex materials;

2. Avoid using covering pigments and fillers;

3. Use it with transparent pigments as much as possible;

4. The amount of pigment is generally 2~5%.

The difference from the general latex mixing process is that the pearlescent pigment is not added to the ball mill together with the vulcanizing agent to stir and disperse, but added at the end of the stirring. When stirring, pay attention to: the stirring should not be too strong, so as not to affect the pearlescent effect; Good pigment dispersion. The stirring time does not need to be too long; the stirring speed and time should be kept constant; the pearlescent pigment is made into a liquid slurry (such as water) in advance to accelerate the dispersion, and can also prevent the latex from generating bubbles.

summary

Since pearlescent pigments are different from ordinary pigments, in order to obtain an excellent pearlescent effect, the following four conditions must be met:

1. The transparency of plastic resin is better;

2. As far as possible, choose pigments with good transparency and pearlescent pigments for mixing;

3. Reduce damage to the pearlescent plastic sheet during processing;

4. The pearlescent pigments are fully dispersed and the pigment flakes are oriented parallel to the plastic surface.

For opaque plastics, we recommend using surface spraying to create pearlescent effects, which reduces costs and has a better effect. The application of pearlescent pigments in plastics is far more than the above. For applications such as artificial marble, artificial pearl, etc., our company has detailed information to introduce separately.