Determination of the Diffusion Coefficient and the Activation Energy of Fluoroplastics

Abstract

Received: 16 January 2020 Accepted: 20 March 2020 The aim of this research is to study four samples using the fluoroplastic scanning calorimeter which contain different concentrations of thermally extended graphite (GTD) in different dispersions. We noticed that the heating speed plays a very important role. Increasing the heating speed from 5 to 10 then 15 °C/min, changes the thermal behavior of an infinitesimally small compound regardless of the concentration and/or dispersion. All curves each contain an anomaly in the calorimetric curves. The shape of the latter, its energizing energy, and its intensity depend on the concentration and dispersion. The temperature of anomalies in the calorimeter curve changes from one sample to another. We have shown that nanomaterials that contain the smallest GTD concentration with high dispersion and heat up at the highest heating speed deteriorate at high temperatures. It is more resistant to thermal shocks. One of the interesting results of this work the introduction of an amount of GTD in to the polymer improves the thermal properties of the infinitesimal compound, and its use becomes possible in a wide range of temperature.