Effect of Speed on Emulsification Performance

Higher emulsifier speeds are not inherently better. The optimal speed should be chosen based on the specific requirements of the product. High speeds are ideal for handling high-viscosity, finely dispersed emulsions, while lower speeds are sufficient for gentler emulsification needs. Adjusting the emulsifier’s speed according to product and ingredient demands will provide the best results in formulation and production.

• 3000 RPM Emulsifier:

  • Moderate Shear Force: The 3000 RPM emulsifier generates relatively low shear force, making it suitable for medium-viscosity formulations with moderate emulsification requirements. It can effectively mix liquids of different viscosities and disperse solid particles, producing stable emulsions or creams, though the emulsification may be less refined with larger particle sizes.
  • Suitable for Gentle Emulsification: For formulations that do not require intense shear, the 3000 RPM emulsifier helps preserve ingredient integrity by avoiding excessive breakdown. It is ideal for low to medium viscosity products like creams, conditioners, and basic lotions.

• 6000 RPM Emulsifier:

  • High-Efficiency Shear Force: The 6000 RPM emulsifier delivers stronger shear forces, enabling rapid dispersion, emulsification, and homogenization at high speeds. It can handle higher viscosity materials and break down particles into finer sizes (up to microns or even nanometers).
  • Fine Emulsification: This machine is ideal for high-end skincare products like serums, anti-aging creams, premium lotions, and pharmaceutical emulsions, which require more refined dispersion to ensure optimal efficacy and smoother texture.

2. Application Scenarios and Pros/Cons

• 3000 RPM Emulsifier:

  • Pros:
    • Suitable for low- to medium-viscosity products, with simpler manufacturing processes and relatively low costs.
    • Its moderate shear force prevents over-processing sensitive ingredients, preserving their active properties.
    • Commonly used for daily skincare products like creams, lotions, toners, and hair care products.
  • Cons:
    • Struggles with high-viscosity materials, and may not achieve the finer dispersion required for some advanced emulsions.
    • Stability and dispersion quality may not match that of higher-speed equipment, especially with extended storage, where separation could occur.

• 6000 RPM Emulsifier:

  • Pros:
    • Higher shear force enables the processing of high-viscosity materials, ideal for premium skincare and pharmaceutical products requiring precise dispersion.
    • Produces micro- or nano-sized particles, ensuring enhanced stability and superior texture.
    • Suitable for high-end skincare, pharmaceutical emulsions, anti-aging serums, and nano-emulsions.
  • Cons:
    • The intense shear force may degrade sensitive ingredients, especially those prone to heat or mechanical stress.
    • Higher energy consumption, increased equipment costs, and more complex operational management.

3. Emulsification Principles and Physical Outcomes

• 3000 RPM Emulsifier: Relies on lower shear forces to mix, disperse, and emulsify at lower energy consumption levels. It’s best suited for the routine production of standard skincare formulations.
• 6000 RPM Emulsifier: Uses high-speed rotation and powerful shear forces to break down larger oil droplets or particles into much finer ones, producing a stable and uniform emulsion. This high efficiency enhances sensory properties like smoothness and absorption, while ensuring the even distribution of functional ingredients.