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Rheology and flow behaviour

Viscosity is a measure of flow resistance. Rheology refer to the determination of the flow behaviour of a fluid under gravity or under a given force, e.g. injection of thermoset resin into tiny channels in rock for sealing purpose.


Viscosity can be monitored by cappilary viscometers, rotational viscometer or with a rheometer.


Rheometers are very convenient since it is possible to measure the viscosity from very low (0.001/s) to very high shear rates (1000/s) which gives the viscosity function in one single measurement.


The viscosity function can be used in a simulation model to predict the flow behaviour e.g. the pressure drop during flow in tubings, the pump pressure requried to achieve a certain flow rate among others.


  • Prediction of curing behaviour of thermoset
  • Hydration of concrete and degree of hydration
  • Simulation of temperature and conversion profiles in thick walled structures during curing/hydration


  • Newtonian flow
  • Non-Newtonian flow
  • Viscosity
  • Viscosity function
  • Pseudo-plastic flow behaviour
  • Thixotropy
  • Shear stress
  • Thixotropic fillers
  • Rheometer
  • Viscometer



Polymer technology

  • Polymer materials
  • Polymer processing
  • Characterisation
  • Curing of thermoset


Epoxy technology

  • Curing progress
  • Conversion, vitrification
  • Curing kinetics
  • Resin and curing systems


Analysis & Characterisation

  • DSC, TGA
  • DMA
  • Tensile testing
  • Creep testing
  • Diffusion properties

Stability and lifetime

  • Accelerated ageing
  • Climate chamber
  • Life time prediction
  • Reaction kinetics
  • Life time extension


Simulation & Modeling

  • Heat transfer
  • Structural mechanics
  • Flow properties
  • Diffusions properties
  • Electric properties


Flow properties

  • Viscosity
  • Viscosity function
  • Pseudo-plastic
  • Thixotropy
  • Flow behaviour


Polymira AB

Contact: info@polymira.se