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Technical Documentation

Thermal analysis: Thermomechanical analysis (TMA)

Principle : The thermomechanical analysis (TMA) allows you to measure quickly and easily the change of dimension of the sample (expansion, shrinkage, movement, etc.) as a function of temperature, time and applied force. the probes and the media sample are generally quartz. the geometry of these parts requires a mode of measurement. the possible modes are the following :

  • expansion (probe used no force on the sample) for the determination of coefficient of expansion in dilatométrie ;
  • penetration ; a strong constraint, created by a strong force applied by a probe of small diameter, increases the contribution of the penetration relative to the expansion ;
  • traction (sample attached by two small clamps) to the study of films or fibers under traction.
  • three-point bending (assembly consisting of support in the form of a knife) ;
  • volume expansion (mounting consisting of a crucible and a tube with a flat bottom) for the study of the dilation of powders, for example.

For the modes in both penetration and bending, a stress that is more important is imposed to the sample.

Interest/Objective:

Many materials undergo changes in their properties, thermo-mechanical during heating or cooling. for example, the phase changes, the steps of sintering or softening may add to the thermal expansion. analysis (tma) can provide valuable information regarding the composition, structure, production conditions or application possibilities for various materials.

Résultats obtenus par cette méthode:

  • traction/deformation of films
  • linear coefficient of thermal expansion
  • measures penetration
  • temperature of glass transition

Differential Thermal Analysis (DTA)

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Thermodilatomètrique analysis

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Differential scanning calorimetry (DSC)

Thermal analysis
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Thermogravimetric analysis (TGA)

Thermal analysis
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Thermomechanical analysis (TMA)

Thermal analysis
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Dynamic mechanical analysis

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  • Thermal analysis: Thermomechanical analysis (TMA)
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