Rheology Testing

Intertek has significant expertise in rheology testing of polymers, rubber and plastics. An important parameter for processing properties of plastics or polymers is flow behaviour, or rheology. Rheological properties of polymers are linked with their molecular structure. Rheological analysis is used to characterize newly developed materials, for trouble-shooting purposes and for process and quality-control.

Specialists at Intertek provide expertise for a broad variety of rheological test methods on thermoplastics, elastomers (rubbers) and polymer solutions.

Rheology Techniques

• Capillary rheometry
• Parallel plate rheometer
• Torque rheometer
• Shearing-disc viscometer
• Dilute Solution Viscometry
• Dissolving viscosity
• Relative viscosity
• Reduced viscosity
• Inherent viscosity
• Intrinsic viscosity

Rheology applications

• ISO-1133, ASTM D1238 - Melt-index
• MFI - Melt mass-flow rate
• MVI - Melt volume-flow rate
• ISO-1133 - Melt density of thermoplastics
• ISO-11443, ASTM D3835 - Die-swell, flow-curves,
  melt-stretch
• DMA - Dynamic mechanical properties
• ASTM D2538 - Thermo-mechanical measurements
• ISO-289, ASTM D1646 - Mooney
  Relaxation slope