Micro-powder-grade pigments have extremely fine particle sizes (<17 microns). If the speed of the dispersion equipment is insufficient or the dispersion time is too short, agglomeration may occur. It is recommended that customers check the operating parameters of the grinder or high-speed disperser (such as speed ≥1200rpm, dispersion time ≥20 minutes), and give priority to the use of pre-dispersed slurry. If the problem persists, our technical team can provide equipment selection recommendations and dispersion process optimization solutions to ensure that the pigment is fully wetted.

Although high-temperature resistant pigments can withstand processing temperatures above 280°C, if the extruder temperature fluctuates by more than ±10°C or the residence time is too long, thermal degradation may occur. It is recommended that customers strictly control the processing temperature (such as 200-220°C for PVC products) and shorten the length of the melting section. Our company can provide thermal stability test reports and process parameter simulation services to assist customers in optimizing production lines.

Low-heavy metal grade pigments have passed the EU feed additive certification (such as FAMI-QS), but if the customer contacts lead/cadmium-containing equipment during the mixing process, cross contamination may occur. It is recommended that customers verify the cleanliness of the production line and use a dedicated feeding port. Our company can provide SGS test reports and clean production guidelines, and support third-party sampling when necessary.

The bulk density of high-density grade pigments reaches 0.9-1.0g/cm³. If the humidity of the container is >70% or the stacking pressure is too high, slight caking may occur due to friction between particles. This phenomenon does not affect performance. It is recommended that customers sieve before use (recommended mesh size ≥80 mesh). Our company can provide moisture-proof packaging upgrade services and optimize container loading solutions to reduce transportation risks.

Architectural-grade pigments have a weather resistance of more than 5 years, but if the cement pH value is >13 or the humidity during the curing period is <40%, the alkali-aggregate reaction may be accelerated. It is recommended that customers control the cement alkali content (<0.6%) and use standard curing (humidity ≥90%, temperature 20±2℃). Our company can provide accelerated aging test data and color maintenance solutions, including surface water repellent recommendations.