What about the color difference of thermoplastic elastomer materials
Possible causes and solutions of color difference of thermoplastic elastomer raw materials
1. Thermoplastic elastomer raw materials from different manufacturers or batches
Thermoplastic elastomer raw materials produced by different manufacturers have different color matching properties due to different formulas; Or different batches of raw materials produced by the same manufacturer may have different color matching performance due to the instability of process or quality control. If the same proportion of toner or color masterbatch is added, there may be color difference.
Solution: try to use the raw materials from the same supplier and ask the supplier to control the product quality.
2. Migration of small molecule complexing agent
Based on the compatibility, dispersion and uniform base oil filling, the working oil and lubricant introduced into TPE blend system may migrate and precipitate to the product surface, resulting in the darkening and large color change of thermoplastic elastomer materials.
Solution: pay attention to the oil filling and locking of the system, and pay attention to the dosage of small molecule additives.
3. Caused by poor dispersion of toner
When the toner and the main material are mixed unevenly, the toner may agglomerate when dispersed in the screw, or the mixing system itself is not conducive to the dispersion of toner, resulting in color difference.
Solution: stir evenly during operation, select surface active toner to reduce agglomeration, and then add diffusing agent to facilitate the dispersion of toner.
Chinese
Possible causes and solutions of color difference of thermoplastic elastomer raw materials
1. Thermoplastic elastomer raw materials from different manufacturers or batches
Thermoplastic elastomer raw materials produced by different manufacturers have different color matching properties due to different formulas; Or different batches of raw materials produced by the same manufacturer may have different color matching performance due to the instability of process or quality control. If the same proportion of toner or color masterbatch is added, there may be color difference.
Solution: try to use the raw materials from the same supplier and ask the supplier to control the product quality.
2. Migration of small molecule complexing agent
Based on the compatibility, dispersion and uniform base oil filling, the working oil and lubricant introduced into TPE blend system may migrate and precipitate to the product surface, resulting in the darkening and large color change of thermoplastic elastomer materials.
Solution: pay attention to the oil filling and locking of the system, and pay attention to the dosage of small molecule additives.
3. Caused by poor dispersion of toner
When the toner and the main material are mixed unevenly, the toner may agglomerate when dispersed in the screw, or the mixing system itself is not conducive to the dispersion of toner, resulting in color difference.
Solution: stir evenly during operation, select surface active toner to reduce agglomeration, and then add diffusing agent to facilitate the dispersion of toner.