DYNAMIC DIFFERENTIAL CALORIMETRY
Determination of melting and crystallization temperatures and enthalpies, glass transition temperature, specific heat capacities, oxidation induction time and temperature
investigation method
differential scanning calorimetry
abbreviation
DSC
Device type and equipment
DSC Q2000 with RCS90 cooler (TA Instruments)
functional principle
Measurement of the change in the heat flow difference between the sample and a reference sample while they are subjected to a temperature change.
Typical applications
plastics, elastomers, resins, metals and composites, films and fibers
measurement technology
Standard and temperature-modulated DSC, determination of thermal conductivity, enthalpy and specific heat capacity, as well as oxidation induction time and temperature.
Requirements for sample
few milligrams
Norms and standards
DIN 51007, ISO 11357-1, ASTM E793, ASTM E794, ASTM D3895, DIN EN 728
What is a DSC analysis?
A thermal analysis technique in which the heat flow into or out of a sample is measured as a function of temperature or time while the sample is subjected to a controlled temperature program. It is a very powerful technique for evaluating material properties such as glass transition temperature, melting, crystallization, specific heat capacity, curing process, purity, oxidation behavior and thermal stability.
DSC analysis, for example according to DIN EN ISO 11357
- Determination of glass transition temperatures Tg.act and Tg.max and residual reactivity
- Temperature range -90…550 °C (with RCS90 cooler)
- -120…725 °C (with quench cooler)
- Heating rate 0.1…40 K/min
- Sample mass 2…40 mg
DSC analysis for polymer analysis
- Determining the type of base and co-polymers and identifying amorphous and partially crystalline plastics using characteristic conversion properties such as melting point range and glass transition temperature
- Determining purity, analyzing batch differences, phase transformations, adsorption and absorption, crystallization reactions, etc.
- Determining the influence of processing conditions on product properties, such as internal stresses and microstructural features
- Investigation of curing and crosslinking reactions and post-curing (polymerization, polyaddition and polycondensation)
- Determining the state and behavior of aging (thermooxidative degradation) of polymer materials (oxidation induction time (OIT) and oxidation onset temperature (OOT))
You can find an overview of further methods in the field of polymer analysis in our encyclopedia- polymer analysis
