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Rheological properties

The rheological properties of plastic materials measure their resistance to creep and deformation in solution, dispersion and molten state.

ENAC ISO 17025

Am I breaking down the material when processing it? Can this recycled material keep a suitable molecular weight for the product I manufacture? To what extent will fillers and additives affect material melting in terms of mechanical energy and time?

Thickness, creep, cross-linkage and curing are examples of the behaviours and status of plastic materials (rheological properties) that need to be monitored. Will I have flow problems when coextruding certain materials and adhesives? Which of these two resins takes longer to gel?

How do we test rheological properties?

At AIMPLAS’ laboratories, we have the necessary equipment to carry out tests and trials on rheological properties:

  • Extrusion plastometer: Melt Mass Flow Rate (MFR) and/or Melt Volume Flow Rate (MVR).
  • Capillary viscometer: reduced and intrinsic viscosity of PA, PET, etc.
  • Brookfield viscometer: viscosity at given shear rates of resins, pastes, dispersions and fluids.
  • Rotational rheometer: viscosity at given shear rates and viscoelastic properties of melted polymers, pastes and other fluids.
  • Capillary rheometer: viscosity at given shear of melted polymers.
  • Extensional rheometer: melt strength and drawability.
  • Brabender torque rheometer: melting curve and time to degradation.
Your characterization tests with full guarantees
Tests accredited by ENAC

AIMPLAS has the highest number of tests accredited by ENAC (Spanish National Accreditation Body) for plastics according to the UNE-EN ISO/IEC 17025 standard in Spain.

We accompany you throughout the entire process

We provide added value to our clients through a close relationship, advice on the interpretation of results and the preparation of clear and understandable reports.

Experience and know-how

AIMPLAS ensures the best results and quality for its clients so that companies can guarantee the reliability of their products or services