Produção e caracterização de microcompósito polimérico de melamina-formaldeído e caulim aplicado à produção de materiais elétricos

Abstract

The development of new materials with electrical applications is a constant process today. However, this search should be thought based on their characterization, the processes in which they are inserted, to provide safety for their consumers as well as the environment. In this research, it was produced and characterized a composite based on formaldehyde melamine and kaolin, acquired as a composite material with new properties and less aggressive to the environment. For this purpose, Kaolin and MF Resin samples were individually characterized by: X-ray fluorescence (XRF), X-ray Diffraction (XRD), Ultraviolet Spectroscopy (UV-vis), Thermogravimetric Analysis (TG), Derivative Thermogravimetric (DTG), Differential Exploratory Calorimetry (DSC) and Scanning Electron Microscopy - SEM. The raw materials were then thermopressed to obtain disc samples with a diameter of approximately 30 mm and thickness of 2.75 mm. Triplicates were produced, composed of MF 100% and the mf +kaolin (MFC) composites in proportions 2:1 and 3:1, which were then submitted to electrical, thermal and morphological tests. As a result of these experiments it was possible to know important physical and chemical characteristics about those materials, such as: their constituent elements, types of crystallographic structures, thermal and electrical characteristics. Additionally, important parameters for material processing have also been stablished. MFC composites emerge as a promising alternative to the electric industry, since it has greater thermal resistance than the melamine used separately, good processability that contributes to the reduction of the use of materials Polymeric.