Development and surface properties of polyamide 6 and quasicrystal composite coatings recycled via spin coating technique

In search to meet technological demands, material studies as well as techniques to process them have been increasing worldwide, thus seeking to unite lower processing costs, the best properties of the materials involved, reuse of resources and more sustainable means. Thus, the development of new materials, coatings and composites have stood out in the market. For this work, we fetch the development and characterization of polyamide 6 composite coatings with quasicrystalline AlCuFe fillers, recycled through the spin coating technique, since that little is known about the interaction between these two materials, which have excellent isolating properties, and little is observed about the use of this technique to produce coatings with metallic loads. The recycled AlCuFe quasicrystalline alloy was manufactured by conventional induction casting. Polyamide 6 coatings with quasicrystalline particles were developed with additions of 0, 1, 3 and 5 (% vol.) quasicrystal, via Spin Coating technique. Thermogravimetric analyses (TG), differential scanning calorimetry (CSD), average roughness (RA), contact angle, surface energy and scanning electron microscopy (SEM) were performed to characterize this material. Being observed an increase in the thermal stability of the composite, reduction in average roughness (Ra) and surface energy values, with increase in quasicrystal fraction in the polymer matrix. In addition to hydrophobicity and oleophilic character of the samples with the addition of quasicrystalline loads. It can be concluded, in general, that the Spin Coating technique is effective in the production of polyamide composite coatings 6 with recycled quasicrystals, presenting interesting surface properties with potential for further studies in innovative applications, such as semiconductors and surface coatings. © 2022 The Author(s). Published by IOP Publishing Ltd.