International Standards: DIN 53765, ISO/DIN L409 and ASTM D3418
Forced air cooling standard
Low temperature model with LN2 cooling and with Intercooler
Description
The differential scanning calorimeter PT 1 is a well proofen DSC system with a very interesting price. It is a highly precise instrument and the principle of operation is based on heat flux between the sample and the reference. The heat flux is measured while the temperature is changing. The sensors that are used are highest precision PT100 sensors, which are able to directly measure a changing resistance. The used PT100 has a very high sensitivity and can be calibrated very accurate.
Many different applications are known with DSC measurements.
The following physical properties of materials can be measured:
enthalpy, melting energy
specific heat
glass point
crystalinity
reaction enthalpy
thermal stability
oxidation stability
aging
purity
phase transformation
eutectics
polymorphs
product identification
Application example
Polyethylenenterephtalat (PET)
Polyethylenenterephtalat (PET) shows at about 77°C a significant endothermal glass point, which is quite special for parity cristalin thermoplasts. The relation between the exothermal cold crystallizaiton (131°C) and the endothermal melting peak is a measure for the degree of crystallization of the material. In the case of PET the cristalin part is very small which results in good transparency of the material. This is why many drinking bottles are made out of PET.
Determination of the "Oxidative Induction Time" (OIT)
of Polyethylen (PE-LD)
Commentary:
The polyethylen sample will be heated under argon up to 250°C by a heating rate of 10K/min. After 3 minutes in the equilibrium the atmosphere of argon will be changed to oxygen. After 30 sec. you can recognize a rapid oxidation of the sample.
Thermal Analysis
Dilatometer
