National Physical Laboratory

Thermal Analysis

Dynamic Mechanical Analysis

DMA curve
DMA curves indicating analysis points.
The inflection point in the storage modulus
curve is the preferred analysis point for Tg
  • Test modes - flexure (single/dual cantilever, three point bend), tension, compression and shear
  • Temperature range (-150 °C to 600 °C)
  • Frequencies (0.01 to 200 Hz)
  • Storage modulus (E'), loss modulus (E'') and tan d (E''/E') as a function of temperature
  • Glass transition temperature, heat distortion temperature and thermal expansion, Creep, stress relaxation and viscoelastic properties
  • Measurements to ISO and ASTM standards
  • Good Practice Guide
  • Reference specimens

Thermo Mechanical Analysis (TMA)

Thermo mechanical analyser (TMA)
Thermo mechanical
analyser (TMA)

Differential scanning calorimetry
Differential scanning
  • Standard and modulated TMA
  • Test modes - penetration, expansion and flexure
  • Temperature range (-150 °C to 1000 °C)
  • Glass transition and coefficient of thermal expansion
  • Measurements on difficult geometries (fibres, thin films, PCBs)

Differential Scanning Calorimetry (DSC)

  • Standard and temperature modulated options
  • Auto sampling (capable of handling 50 specimens)
  • Temperature range (-90 °C to 700 °C)
  • Glass transition, specific heat, melt and crystallinity, degree and rate of cure, oxidative induction time (OIT)

Thermogravimetric Analysis (TGA)

  • Measures weight changes in a material as a function of temperature or tim
  • Measurement of a material's thermal stability and composition
  • Auto sampling option
  • Temperature range - ambient to 1200 °C
  • Linear heating rates from 0.1 to 500 °C/min
  • Ballistic heating rate >2000 °C/min
  • Suitable for measurement on all types of materials (solids, powders, liquids)

For more information, please contact Sam Gnaniah

Last Updated: 26 Jun 2015
Created: 8 Nov 2010


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