Considerations for Choosing Architectural Paint Pigments

（1） Pigment dispersibility
The dispersibility of pigments is crucial for architectural coatings. Pigments with good dispersibility can be evenly dispersed in coatings, avoiding clumping and ensuring the quality and appearance of the coating. For example, high-quality pigments of Giant Hair can be better compatible with coating systems and improve dispersibility after special surface treatment. Dispersible high-quality pigments can increase the glossiness of coatings by 10% to 15%, while reducing sagging and foaming problems during construction.

（2） Covering power and coloring power
When selecting architectural paint pigments, it is necessary to consider the coverage and coloring power based on the performance requirements of the paint. Pigments with strong covering power can effectively cover the color and defects of the substrate, achieving the expected coating effect. And pigments with strong coloring power can achieve bright colors at lower dosages. For example, in some construction projects that require high color standards, such as high-end office buildings or hotels, strong coloring organic pigments are chosen to achieve unique decorative effects. Generally speaking, pigments with strong coverage and coloring power can reduce the amount of paint used and lower costs.

（3） Thermal stability
Considering the production and application process of architectural coatings, it is very important to choose pigments with good thermal stability. In the production process of coatings, high-temperature heating is involved. If the thermal stability of the pigment is poor, it is easy to decompose and discolor, which affects the quality of the coating. For example, building coatings used in high-temperature environments, such as those near factory workshops or boiler rooms, require the selection of pigments with high thermal stability to ensure the long-term stability of the coating. Color powders with good thermal stability can have a color change rate controlled within 5% after high-temperature treatment.

（4） Light and weather resistance
Choosing pigments with good light and weather resistance according to different usage environments can ensure the long-term stability of the coating. In outdoor buildings, coatings need to withstand the erosion of natural factors such as sunlight, rainwater, and sandstorms. If the light and weather resistance of pigments is poor, they are prone to fading and discoloration, affecting the appearance of the building. For example, the pigments used for exterior wall coatings with giant hair pigments undergo strict light and weather resistance tests to ensure color stability during long-term use. Generally speaking, inorganic pigments have better light and weather resistance than organic pigments.

（5） Compatibility
When choosing architectural paint pigments, it is also necessary to pay attention to the compatibility of pigments with base materials and other additives. If the pigment reacts chemically with the base material or other additives, it will affect the performance of the coating. For example, pigments may react with the resin in the coating, causing issues such as increased viscosity and prolonged drying time of the coating. Therefore, when selecting pigments, it is necessary to conduct sufficient compatibility testing to ensure that the pigments are well compatible with the coating system. At the same time, some specially treated pigments can also be selected to improve their compatibility with the coating system.

（6） Other performance
When choosing pigments, the functionality of the pigments often needs to be considered as needed. For example, exterior wall coatings for buildings need to consider their reflective and thermal insulation properties, especially in the northern winter and southern hot seasons where the impact of the coating on indoor temperature needs to be moderately considered. Reflective and thermal insulation coatings have good thermal insulation and cooling effects in hot seasons, and can achieve energy-saving and thermal insulation effects in winter.