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Thermokinetics

 

see also: Algorithm of Kinetic Analysis, Applications

The basis of analysis are measurements, executed with the methods:

thermogravimetry (TGA),
differential scanning calorimetry (DSC, DTA),
mass spectrometry (MS),
dilatometry (DIL),
rheometry and its special variant vulcametry (RHEO, VULC).

The general interface to measurement data are ASCII files

In the program Thermokinetics are integrated various methods of kinetic analysis and of predictions as well as

 

Model-free Kinetic Analysis 

   Friedman analysis of dynamic and/or isothermal measurements

   Ozawa-Flynn-Wall analysis of dynamic measurements

   Analysis according ASTM E698

 

Model-fit using Multivariate Nonlinear Regression

Model definition, including multiple step reactions and 18 different reaction types
Conditions for parameters

Visual optimization in order to achieve a good start position for the nonlinear regression 

Nonlinear regression. Conditions of iteration. Results are:
- optimized parameters including standard errors
- F-test regarding the fit quality
- F-test regarding significance of an additional step
- Graphic presentation

 

Isothermal Prediction and Prediction on the Base of a User Defined Temperature Program 

Isothermal prediction of signal 
Dynamic prediction of signal 

Tabular report of signal and degree of reaction versus time for a set of temperatures

Isothermal prediction of degree of reaction 
Dynamic prediction of degree of reaction

Isothermal prediction of formal reactants 
Dynamic prediction of formal reactants

 


NETZSCH offers precision thermal analysis instruments including advanced dilatometers (with a new basic R&D/QC dilatometer), classical DSC & TGA (with a new economical DSC), high temperature DSC to 1650°C for specific heat, very high temperature STA (TGA-DSC/DTA) to 2400°C (featuring the new STA 409-PC Luxx®), thermal / evolved gas analysis with fully-integrated FTIR & MS, plus high resolution TMA and DMA. We also feature leading technology for thermal conductivity and diffusivity measurement as well as refractories testing including HMOR, CIC, and RUL.

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Last update: 06/16/2008 , Copyright © 2000-2006 NETZSCH-Geraetebau GmbH