Plastics are used for insulating wires, as well as for making protect sleeves, adhesive bands and plug casings. Many testing specifications require the identification of this material. We have various analysis methods available for doing so.
It's possible to use thermal analysis methods to determine the characteristic properties of a plastic. This makes it possible to identify the plastic and make inferences regarding its processing.
- With the help of differential scanning calorimetry (DSC) in the temperature range of -100°C to 600°C (max. 700°C), it's possible to determine characteristic properties like melting point, fusion enthalpy, glass transition temperature and decomposition point.
- Thermogravimetry (TG) in temperatures ranging up to approximately 1000°C provides a simple method for observing the controlled decomposition of a plastic. This makes it possible to determine the quantitative properties of the various components of a plastic compound.
Infrared spectroscopy (IR spectroscopy) is a method of molecular spectroscopy. This physical analysis procedure is based on the excitement of energy states in molecules using infrared radiation. This radiation is in the exact range of the vibration level of molecular bonds. Thus, one obtains a characteristic absorption spectrum for the plastic being investigated. Comparison with the reference spectrum of known plastic compounds makes it possible to determine the plastic in question.