Properties of polyester varnish composites with organophilic clay

International Journal of Development Research

Volume: 
12
Article ID: 
25194
5 pages
Research Article

Properties of polyester varnish composites with organophilic clay

Bruno Sampaio Andrade, Shirleny Fontes Santos, Elaine Vidal Dias Gomes Libano and Florêncio Gomes de Ramos Filho

Abstract: 

In this work, a polyester-based electrical insulator varnish modified with soy oil was used to obtain composites by the incorporation of organophilic vermiculite (VMT-org). The dispersion of the VMT-org in the polymeric matrix was performed using an ultrasonic processor. Composites were produced with inorganic particle contents of 1, 3 and 5% (by weight of resin). TGA results showed no significant change in the thermal degradation temperatures. However, the incorporation reduced the maximum rate of degradation. The DSC results showed that the incorporation of VMT-org had two different states, caused by curing the varnish, resulting in two Tg values. The SEM observation showed good dispersion of inorganic particles. XRD analysis suggested that molecules of varnish were intercalated in the lamellae of VMT-org for the 1 and 5% composites, while the lamellae were exfoliated in the 3% composite.

DOI: 
https://doi.org/10.37118/ijdr.25194.09.2022
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