Crystal Pearlescent Pigment Manfuacturer

Why is the manufacturing process of crystal pearlescent pigments more complicated than other types of pigments?
The manufacturing process of crystal pearlescent pigments is more complicated than other types of pigments, mainly due to the following reasons:
Crystal pearlescent pigments are usually composed of a multi-layer structure, and each layer needs to be precisely controlled to achieve a specific optical effect. These layers include:
Substrate layer: usually a flaky mica, silica or synthetic substrate, which must have high transparency and good optical properties.
Coating: The surface of the substrate needs to be coated with one or more layers of different metal oxides (such as titanium dioxide, iron oxide, etc.), and the thickness and uniformity of these coatings determine the color and gloss of the pigment.
The thickness of each layer must be controlled very accurately, because coatings of different thicknesses will produce different interference effects, thereby changing the color and effect of the pigment. This requires highly sophisticated coating technology and strict process control.
The coating process itself is also very complex, usually using advanced processes such as chemical vapor deposition (CVD), physical vapor deposition (PVD) or sol-gel method. These processes need to be carried out under specific temperature and pressure conditions to ensure that the coating is uniform and has the desired optical properties.
The manufacture of crystal pearlescent pigments requires the use of high-purity raw materials, and any impurities may affect the optical effect and quality of the final pigment. This requires strict selection and processing of raw materials.
Pigments also require post-processing steps after coating, such as sintering, surface treatment and particle size control, to ensure the physical and chemical stability of the pigment. These steps also increase the complexity and cost of manufacturing.
Due to the chemicals and process conditions involved (such as high temperature and vacuum environment), the manufacturing process requires strict environmental control and safety measures to prevent contamination and ensure the safety of workers.
The research and development of crystal pearlescent pigments requires a lot of experiments and optimization to determine the best material combination and process parameters. Strict quality control is also required during the manufacturing process to ensure that each batch of pigment meets the standards.

Why do crystal pearlescent pigments require high-purity raw materials?
Crystal pearlescent pigments require high-purity raw materials for the following reasons:
The unique optical effects of crystal pearlescent pigments, such as sparkle, pearlescence and color-changing effects, depend on the reflection, refraction and interference of light in the pigment particles. Any impurities will affect these optical phenomena, resulting in color deviation and reduced gloss. Therefore, high-purity raw materials can ensure that the pigment has the expected optical properties.
High-purity raw materials can ensure the consistency of color and effect of each batch of pigments. The presence of impurities may cause color deviation of the pigment, especially in batch production, affecting the quality of the final product and customer satisfaction.
High-purity raw materials help improve the chemical and physical stability of the pigment. Impurities may cause chemical reactions such as oxidation or discoloration of the pigment under different environmental conditions, thus affecting its durability and service life.
In some applications, such as cosmetics and food packaging, pigments need to come into contact with the human body or food. High-purity raw materials can reduce the content of harmful substances, ensure the safety of the product, and avoid potential harm to human health.
The use of high-purity raw materials can simplify many steps in the manufacturing process, such as reducing the time and cost required to remove impurities. In addition, the consistency of high-purity materials can improve the controllability of the production process, reduce scrap and rework.
In some demanding applications, such as high-end automotive coatings and high-end cosmetics, product performance is critical. High-purity raw materials can ensure the best performance of pigments in these applications, providing excellent color saturation, gloss and durability.