Smithers regularly provides rheology testing to support quality control processes, assist with failure analysis and process optimization issues. The information obtained from rheology testing can provide accurate materials property data for flow simulation software packages such as Moldflow, Sigmasoft 3D and Compuplast.

Our rheological testing capabilities

Rheology for plastics

Smithers can generate rheological data all the way through from simple Melt Flow Index (MFI), to low shear rate, high shear rate and finally, to in-line die rheology on an extruder.
Melt Flow Index/Rate (MFI/MFR)
  • Typically used as a basic quality control tool.
  • Useful for checking whether the polymer grade is as specified, especially if processing problems are occurring.

Rheology for rubbers

Our service for rubbers covers simple cure characteristics and sophisticated rubber processing analysis.
Cure properties (MDR)
  • This instrument is in almost constant use in our processing lab. It is used to assess cure kinetics and offer a quality control solution.
  • Variable temperature cure analysis.
  • Can also be used for assessing cross-linkable polymers as well as rubbers.
Rubber Proccessing Analysis (RPA)
  • More sophisticated than MDR.
  • Can be used to assess the processing of rubbers in a similar way to oscillating disc Rheometers for plastics. Provides information useful for extruding rubber compounds.
  • Can also be used for assessing polymers such as PVC.

Recycled and other sustainable materials

Smithers also offers rheology studies for sustainable polymers – from biopolymers to recycled blends and other novel formulations. These provide you with an accurate understanding of how your material behaves in different scenarios e.g., allowing you to measure the performance of materials containing different rations of recyclate.

Find out more by contacting one of our experts.

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Rheology Testing

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