Analyses et surface
FrançaisEnglish ANALYSES ET SURFACE TEAM CERTIFICATIONS CONTACT DOWNLOAD
           
     
SKILLS
AS Failure expertise
AS Material studies
AS Foreign bodies characterization (pollution)
AS Non-contact surface topography
AS Studies of material ageing in controlled environment
TECHNICAL MEANS
as Scanning Electron Microscopy & X-Rays Microanalysis
as 3D Digital Microscope
as X-Rays Microtomography
as Glow Discharge Optical Emission Spectrometry
as Vibrational spectrometry
as X-ray diffraction
as Non-contact surface topography measurements
as Laser diffraction particle size analyser
as Microhardness
as Differential Scanning Calorimetry (DSC)
as Salt fog chambers
Differential Scanning Calorimetry (DSC)



Definition

DSC is used to study thermal transitions occurring in a material submitted to a temperature ramp (melting point, glass transition, crystallization…)

JPEG - 20.3 kb
Principle of DSC analysis
JPEG - 23.8 kb
Example of DSC curve

Principle

The DSC analysis consists in measuring the difference in heat flow between the sample and a reference (inert material) when both are submitted to the same temperature ramp. Any transformation occurring in the sample triggers off a heat flow, whereas the reference still be inert. The calorimeter measures the temperature and heat flow, that provides qualitative and quantitative information about physical and chemical transformations within the sample (exothermic or endothermic reactions).

Examples of applications

- Polymers identification, raw materials control – melting temperature and transition enthalpy
- Degree of crystallinity
- Glass transition, cross-linking and ageing...

Equipment

- DSC Q20 TA Instruments
- Temperature range : 30°C – 450°C
- Scanning Gas : Nitrogen
- temperature accuracy : +/- 0,1°C
- Sensibility : 1mW