Mixer Measuring Heads
C.W. Brabender® customers frequently need to conduct a variety of mixing tests on different types of materials. Therefore, we offer a line of Mixer/Measuring Heads that are commonly used for general mixing studies of flowable materials.
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.
The Mixer/Measuring Head is provided with a ram closure attachment for inert gas injection.
Option: A sealed ram closure and “O” ring seals installed in the mixer bushings are available for gas measurements.
The Mixer/Measuring Head is a miniature internal laboratory mixer (electrically or liquid heated) specially designed for attachment to a C.W. Brabender® drive unit. The Mixer uses non-intermeshing, counter-rotating mixing blades to homogenize a single or multi component material blend on a laboratory scale volume. Ultimately, it increases the processing flexibility of a laboratory with diverse materials testing requirements.
Mixer/Measuring Heads are commonplace in materials research, product development, and quality control environments.
Their usage has been widely accepted as a standard for measuring, evaluating and characterizing material flow properties in a repeatable and reproducible manner. The Mixer acts as a Measuring Head, or as a sample torque measurement device, when connnected to a Plasti-Corder® torque rheometer. Process torque and material temperature data obtained during mixing are used to generate a specific compound processability fingerprint using specialized Brabender® WINMIX Windows® Mixing Software. When used with a Prep-Center® drive, the Mixer acts strictly as a batch mixer from which melt temperature and samples can be obtained.
Process Studies
The Mixers can characterize the processability of thermoplastics, thermosets, elastomers, ceramic molding materials, fillers, pigments, and other plastic and plastifiable materials...
• Basic Material Properties • Fusion Characteristics
• Heat Stability • Apparent Viscosity
• Effect of Molecular Weight • Quality Control Testing
• Shear Thinning • Filler/Pigment Dispersion
• Thermoset Cure • Powder/Liquid Absorption
• Research & Development • Cure Studies of Elastomeric Polymers
• Formulations and Blends • Compounding/Mixing
• Rubber Black Incorporation • Effect of Additives
• Lubricity • Plastisol Gel & Fusion
• Food Processing • Flour and Cereal
• Custom Mixing (Small Scale) • Melt Temperature Characteristics
• Dispersion Effect of Micro Structure
Exchangeable 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.
