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Contact
info@polymira.se
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.
Services
- 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
Keywords
- Newtonian flow
- Non-Newtonian flow
- Viscosity
- Viscosity function
- Pseudo-plastic flow behaviour
- Thixotropy
- Shear stress
- Thixotropic fillers
- Rheometer
- Viscometer
Competence
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