About Rheology Testing

Using Rheology testing we are able to determine the response of thermoplastics to shearing and the viscosity response over time (curing), frequency, and temperature.  Rheology also provides comparative analysis of viscosity.

  • Approaches

    Rheology testing is conducted using parallel plate or cone-and-plate configurations from subambient to high temperature.  The data provided by rheology testing is more representative of processing than Melt Flow Index (MFI), a different thermal test. 
    ASTM D4440
    Rheology Testing Rheometer
  • Sample Considerations

    Samples may be:

    • Liquids
    • Pastes
    • Solids

    Solids can be in the form of pellets, powder, or films. 

    We can also convert a product into a suitable sample by using our sample preparation equipment.

    A typical sample volume needed for Rheology testing is a disk with dimensions of approximately 1-inch diameter and 1/8-inch in thickness. 

    A sample size of several hundred milliliters, a few fluid ounces, or 5-10 grams is typically sufficient. 

    If your sample material is in short supply don't worry.  Our scientists will work with you to ensure your sample is used in the most efficient way.

    Contact us to discuss your specific Rheology Testing needs and associated sample considerations.

  • Experience

    Products we've tested with Rheology include:

    • Health and beauty aids, including mascara
    • Construction materials, sealants, caulks, adhesives, and asphalt
    • Plastic resins destined for extruded film applications
    • Heat transfer fluids and lubricants
    • Polymers, copolymers, and polymer blends