Pearl Pigment with TiO2
- Titanium dioxide is known for its excellent opacity, meaning it can effectively cover underlying surfaces. This property is crucial in pearl pigments to create a solid base color for the pearlescent effect.
- Titanium dioxide is a bright white pigment, and this brightness is transferred to the pearl pigments. This characteristic contributes to the vibrancy and vividness of the pearlescent colors produced.
- Titanium dioxide is chemically stable and resistant to UV radiation. This stability ensures that pearl pigments retain their color and do not degrade over time, making them suitable for various applications.
Pearl Pigment without TiO2
- When titanium dioxide is omitted from pearl pigments, it results in a more translucent or less opaque appearance.The absence of titanium dioxide affects the pigment's ability to create a solid base color, potentially leading to a more transparent pigmment.
- Pearl pigments without titanium dioxide exhibits lower brightness and whiteness compared to those that include titanium dioxide.
- When titanium dioxide is excluded from a pearl pigment formulation, the overall stability and UV resistance is influenced The pigment becomes less resistant and easily detriorates.
Frequently Asked Questions
Why is titanium dioxide used in pearl pigments?
TiO2 has a high refractive index, so it creates bright reflection, opacity and interference colour when coated on mica platelets.
Does TiO2 coating thickness affect pearl pigment colour?
Yes. Thin TiO2 layers can create silver or white pearl effects, while controlled increases in thickness shift interference colours toward gold, red, blue or green.
Where are TiO2 pearl pigments used?
Automotive coatings, cosmetics, epoxy resin, plastics, printing inks and industrial coatings use TiO2 pearl pigments where brightness and pearlescent shimmer are required.