Prep-Mixer®
  • Overview
  • Technical data

Ideally suited for preparing laboratory batch samples of thermoplastic and elastomeric compounds

The Prep-Mixer® is C.W. Brabender's largest Mixer/Measuring Head. It is a 3-piece design with a capacity of 350/420ml depending on mixer blade configuration. Ideally suited for preparing laboratory batch samples of thermoplastic and elastomeric compounds.

Prep-Mixer® Blades

Roller Blades are most commonly used for materials that require a strong shear force to form a homogenous melt: thermoplastics, and many thermosetting resins such as phenolics and expoxies... typical studies: fusion, lubricity, heat stability, crosslinking, and degradation.

Banbury Blades are desigened to duplicate the mixing action of a commercial Banbury Mixer... a medium shear-rate mixing action ideal for mixing elastomeric materials, compounding studies, and recycled materials.

CAM Blades have achieved widespread success in the Rubber Industry... a medium shear-rate blade imposing a combination of milling, mixing, and shearing forces against the test sample, alternating compacting and releasing the material within the chamber.

Sigma Blades are the original Brabender® Mixer blades developed several decades ago for the testing of flour dough... its low shear-rate design creates a tumbling and kneading force within the mixer without imposing a strong compressing force.

C.W. Brabender® mixing bowls and removable blades are cast of 304 Stainless Steel. Custom metallic and heat hardened surfaces are available upon request. A torque overload shear coupling is attached to each mixer, protecting the motor drives from torque overload and preventing damage to the Mixer/Measuring Head.

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Prep-Mixer® blades with labels Prep-Mixer® with blades

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Blade Net Chamber Volume Shear Rate Suggested Charge*
Roller 350 ml High 245 g
Banbury 375 ml Medium 263 g
Cam 420 ml Medium 294 g
Sigma 600 ml Low 420 g
* Suggested Charge 70 % of Total at 1.0 Specific Gravity
...where quality is measured.