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Company news about What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

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What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

2026-01-10

What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

Stratification is mainly caused by insufficient emulsification, uneven particle size distribution, or poor system stability. Equipment-based solutions are as follows:
Insufficient shear force: Extend high-shear homogenization time by 10-20 minutes or increase the speed by 1000-1500rpm. If the stator-rotor is worn (after 8000+ hours of operation), replace it to restore shear efficiency.
Uneven mixing: For high-viscosity emulsions, use planetary mixing emulsifiers with scraping wall functions to eliminate local material accumulation. Ensure the stirring head covers the entire tank volume to avoid incomplete mixing of upper and lower layers.
Bubble entrapment: Adopt vacuum emulsifiers to remove air during emulsification, as bubbles accelerate stratification. For non-vacuum equipment, extend low-speed stirring after emulsification to allow bubbles to escape.
Additionally, adjust the cooling rate after emulsification—cool the emulsion to room temperature at 2-3℃/min to stabilize the particle structure and avoid thermal expansion-induced stratification.
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Company news about-What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

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What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

2026-01-10

What causes emulsion stratification after production, and how to resolve it with equipment adjustments?

Stratification is mainly caused by insufficient emulsification, uneven particle size distribution, or poor system stability. Equipment-based solutions are as follows:
Insufficient shear force: Extend high-shear homogenization time by 10-20 minutes or increase the speed by 1000-1500rpm. If the stator-rotor is worn (after 8000+ hours of operation), replace it to restore shear efficiency.
Uneven mixing: For high-viscosity emulsions, use planetary mixing emulsifiers with scraping wall functions to eliminate local material accumulation. Ensure the stirring head covers the entire tank volume to avoid incomplete mixing of upper and lower layers.
Bubble entrapment: Adopt vacuum emulsifiers to remove air during emulsification, as bubbles accelerate stratification. For non-vacuum equipment, extend low-speed stirring after emulsification to allow bubbles to escape.
Additionally, adjust the cooling rate after emulsification—cool the emulsion to room temperature at 2-3℃/min to stabilize the particle structure and avoid thermal expansion-induced stratification.
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