Abstract
Based on linear low-density polyethylene and maleated polyethylene a polymer nanocomposites containing modified montmorillonite have been obtained, structure is investigated by XRD analysis. In turn, by the methods of thermal analysis in static and dynamic modes, the resistance of polymer nanocomposites to oxidative destruction it was investigated. In parallel with this, a comparative analysis of the thermal stability of polymer nanocomposites and polymer compositions containing commercially available organic antioxidants for stabilization of materials based on polyolefins. By results of the analysis carried out in a dynamic mode, for a series of polymer composites the activation energy of thermooxidative destruction was calculated. It is shown that the nanocomposites based on polyethylene, containing the modified montmorillonite not only not concede to polymer compositions with antioxidants in to thermal stability, but also exceed their. Accelerated tests, carried out at relatively high temperatures allowed evaluate the durability of polymer nanocomposites to thermooxidative destruction. Received results allow approve about a long-term thermal stability of these materials in the processing, and in the exploitation conditions.
Highlights
For the purpose of prevention of thermooxidative destruction of polyethylene in the course of processing or exploitation at certain temperatures, used organic stabilizers of various mechanisms of an action
The nanocomposites based on polyethylene with montmorillonite are characterized by the increased melting temperature, heat deformation temperature, thermal stability [2,3,4,5]
Thermal stability of polymer nanocomposites in the conditions of the continuous temperature growth were investigated rather intensively while there are no publications related with studying of stability of such materials under conditions of long thermal influence
Summary
For the purpose of prevention of thermooxidative destruction of polyethylene in the course of processing or exploitation at certain temperatures, used organic stabilizers of various mechanisms of an action. Their efficiency is limited within temperatures 200–250 °C an above which stabilizers are destructed and, respectively, lose the activity, long before the beginning of the thermooxidative destruction of polyethylene which begins in air oxygen presence at 270–300 °C [1]. Thermal stability of polymer nanocomposites in the conditions of the continuous temperature growth were investigated rather intensively while there are no publications related with studying of stability of such materials under conditions of long thermal influence. Thereby, in this paper we present the results of investigation directed to studying of thermal stability of. Such characteristics are especially important for materials (for example, constructional, technical and electro-technical application) which have to possess the increased rigidity and wear resistance in the wide temperatures range [6]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
