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LATEST NEWS

16th April 2017
Tommi Borg visits for your meetings at Chinaplas May 16-19, 2017 - Guangzhou, PR China.

24th November 2015
New published paper "Linear viscoelastic model for different flows based on control theory", Appl. Rheol. Read more >>

7th November 2014
RheoPower 4.3 is also available as true 64-bit for heavy computations. Read more >>

20th August 2014
Tommi Borg gives an oral presentation at The International Conference on Polyolefin Characterization (ICPC) September 21-24, 2014 - Valencia, Spain. >>

30th October 2013
New RheoPower 4.2 produce accurate MWD by Multi-Record Analyze. Read more >>

RheoAnalyzer

From measured viscoelastic properties to the structure analyses as MWD and LCB

Accurate results

  • The quality of fit is evaluated by calculating the percent root mean square error %RMSE (ref 1).
  • The data for Cross, Bersted and Neural Net models have the same source.
  • If data is relatively accurate, it is possible to find the MWD and other structure properties.


  • The typical %RMSE-errors of different known models and computation levels of RheoAnalyzer. Click on the figure to zoom it.

    1. de Vries S. A., L. T. Kale, T. Oswald, and T. P. Karjala, "Molecular structure - Linear viscoelastic properties modelling for constrained geometry catalyst polyolefin resins", XIIth Int. Cong. on Rheology, Quebec (1996).

    Applications

  • Control tool of polymerization can also be used with continuous on- line devices.
  • Easier to generate tailored polymers.
  • Design aid for extrusion dies and processes.
  • Data feeder for injection mould design tools such as CAD/CAE/CFD simulation software. General knowledge of relations and structure.
  • New winds for measurements

  • The RheoAnalyzer shows relatively absolute error, by which is possible to develop measuring methods and customs.
  • Software can be very sensitive to some measuring methods, such as start-up procedures.


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