Per: David Coverdale Rangel Velasco (UENF), Felipe Perissé Duarte Lopes (UENF), Rômulo Leite Loiola (UENF), Noan Tonini Simonassi (UENF), CARLOS MAURÍCIO FONTES VIEIRA (UENF)
Abstract:
Epoxy resin is a versatile polymer widely used due to its excellent mechanical, electrical, and chemical properties, as well as its use in the manufacture of composites. However, the presence of bubbles during the curing process is a common problem that can negatively affect its performance, especially in the production of composites. Therefore, various techniques have been developed to reduce the porosity of materials, such as the use of vacuum and additives. In this sense, this article discusses the influence of the use of an anti-bubble on the compression resistance of particulate epoxy matrix composites. The evaluated epoxy system was DGEBA/TETA and the anti-bubble additive used was Siladit 53. Four formulations were evaluated, including the pure epoxy system, with organic, inorganic, and hybrid particles. The tests were carried out according to ASTM D695 and their results were analyzed through an analysis of variance (ANOVA). Such analysis indicated that the use of anti-bubbles reduced the stiffness of the composites but did not significantly increase the resistance of the specimens.