Diamond Pearlescent Pigment Manfuacturer

Why do diamond pearlescent pigments usually have good UV resistance?
Diamond pearlescent pigments usually have good UV resistance, mainly due to their unique composition and structural design. The following is a detailed explanation.
Stability of the main ingredients. Titanium dioxide is a common coating material for diamond pearlescent pigments, which has high light stability and UV reflection ability. It can effectively reflect and scatter UV rays to prevent them from penetrating and damaging the underlying materials. Titanium dioxide not only prevents UV damage to the pigment itself, but also protects the application surface, such as automotive paint or architectural paint, from the effects of UV.
Mica is the core material of diamond pearlescent pigments, which has good chemical inertness and thermal stability. Its flake structure helps to enhance the optical properties of the pigment while providing a physical barrier to further improve UV resistance.
Advantages of structural design. Diamond pearlescent pigments usually adopt a multi-layer coating structure, that is, multiple layers of titanium dioxide or other oxides are coated on mica sheets. This structure can effectively increase the reflection and scattering ability of the pigment, so that light is reflected multiple times between the layers, weakening the penetration of UV rays.
The multi-layer structure can also reflect light at different angles, enhancing the brightness and glittering effect of the pigment, while protecting the underlying material from direct exposure to UV rays.
Nanoparticle technology. Nanoparticle technology is widely used in modern pigment manufacturing processes. Nano-scale titanium dioxide particles have a higher surface area and stronger light reflection ability, which can effectively block ultraviolet rays. The uniform distribution and close arrangement of nanoparticles further improve the optical properties and UV resistance of the pigment.
Surface treatment technology. Some high-end diamond pearlescent pigments undergo special surface treatments, such as coating with antioxidants or UV absorbers. These substances can absorb or neutralize ultraviolet rays to prevent them from damaging the pigment. Surface treatment can also enhance the weather resistance and chemical stability of the pigment, allowing it to maintain stability and gloss for a longer time in outdoor environments.
Coating technology. Through advanced coating technology, the core material of the pigment can be completely coated in a stable outer layer. This coating not only prevents direct contact with ultraviolet rays, but also improves the physical strength and chemical corrosion resistance of the pigment.
Diamond pearlescent pigments undergo rigorous UV aging tests during development and production. By simulating long-term UV exposure, the optical properties and physical stability of the pigment are tested to ensure its reliability in practical applications.

Why can coating technology improve the UV resistance of diamond pearlescent pigments?
Pearlescent pigments are a type of pigment with unique gloss and color effects. However, they are prone to photodegradation under ultraviolet (UV) irradiation, resulting in a decrease in their gloss and color effects. In order to improve the UV resistance of diamond pearlescent pigments, scientists have developed an effective method - coating technology. The following will discuss in detail why coating technology can improve the UV resistance of diamond pearlescent pigments.
Principle of coating technology. Coating technology refers to the process of covering the surface of pearlescent pigments with one or more layers of functional materials. These coating layers are usually inorganic or organic materials, such as titanium dioxide (TiO2), silicon oxide (SiO2) or silicone resins. These materials can form a protective layer to effectively isolate the impact of the external environment on pearlescent pigments.
Physical barrier effect. After the coating layer is formed, it can act as a physical barrier to prevent ultraviolet rays from directly irradiating the surface of diamond pearlescent pigments. This layer of barrier can reflect and absorb ultraviolet rays, reduce the irradiation of UV rays to the core of the pigment, and thus reduce the destructive effect of ultraviolet rays on the pigment.
Chemical stability. The coating material itself has good chemical stability and can maintain the stability of its structure and performance under ultraviolet irradiation. For example, inorganic materials such as titanium dioxide and silicon oxide are not easily photodegraded under ultraviolet irradiation, which can protect the core material of pearlescent pigments for a long time.
Reduce oxidation reaction. Ultraviolet rays can promote the occurrence of oxidation reactions, causing oxidation on the surface of the pigment, which in turn affects its optical properties. The coating layer can isolate oxygen, reduce the occurrence of oxidation reactions, and further protect the stability of the pigment.
Specific application of coating technology. In the production process of diamond pearlescent pigments, the application of coating technology usually includes the following steps:
Pretreatment. Surface treatment of pearlescent pigments to remove impurities and organic matter to ensure that the coating layer can be evenly attached to the surface of the pigment.
Selection of coating materials. Select appropriate coating materials according to application requirements. Inorganic materials such as titanium dioxide and silicon oxide have excellent UV resistance, while organic materials such as silicone resins can provide better flexibility and adhesion.
Coating process. Use appropriate coating processes to evenly cover the coating material on the surface of pearlescent pigments. Common methods include sol-gel method, hydrothermal method and chemical vapor deposition method. These processes can ensure the uniformity and integrity of the coating layer.
Post-processing. The coated pearlescent pigment is dried, sintered and other post-processing processes to further improve the stability and adhesion of the coating layer.