Estudo térmico em nanocompósitos epóxi/argila organofílica reforçados com fios Ni-Ti.

Abstract

Use of the epoxy systems in the area and performance of modern industry technology, combined with the nanocomposite materials has been extensively studied in recent years. The Shape Memory Alloy (SMA) wire embedded in polymer matrix with epoxy resin and organoclay may form an exaggeratedly named structure “smart composites”. This technological development occurred due necessary use of materials with special properties not found in a single material, but can be obtained by combining others material, craving unique properties. The study the thermal behavior of wires of the wire Ni-Ti incorporated in to nanocomposites heated by Joule effect using infrared thermography technique, modeling and simulation, in order to develop and optimize composites for mechanical active vibration control is of great interest and originality. In this context the present study evaluate the theoretical and experimental thermal effect in Ni-Ti wires embedded in polymer nanocomposites epoxy/organoclay commercial organoclays, heated by Joule effect. For both, polymer nanocomposites were obtained for receiving the Ni-Ti wire, the temperature distribution of wires embedded in polymer nanocomposites, using infrared thermography technique and simulation using ANSYS CFX commercial software were evaluated. The mathematical model used reproduced the phenomenon of heat transfer in the resin, aproximate efficiency consistent results and the results obtained experimentally. The addition of clay in the chemical composition of the sample had proportional influence to heating by Joule effect. The locations of the wires in the matrix, the clay and the heat transfer coefficient as well as the volume fraction affect the temperature distribution with in the composite.