Barbosa, Ana Paula CysneLira, Margareth Nascimento de2019-05-302021-09-292019-05-302021-09-292019-05-16LIRA, Margareth Nascimento de. Efeitos do envelhecimento natural em compósitos carbono-epóxi. 2019. 94f. Trabalho de Conclusão de Curso (Graduação em Engenharia de Materiais) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2019.https://repositorio.ufrn.br/handle/123456789/40359The aging of polymeric composites involves physical and/or chemical processes that are produced by the interaction between the material and the environment. At the molecular level, such phenomena can cause changes in chemical structure, composition or physical structure. At the macroscopic level, these changes can alter geometry or physical properties. In this work, carbon-epoxy composites were exposed to natural aging for a period of 90 days. Dynamic-mechanical analysis (DMA), Fourier transform infrared (FTIR) spectroscopy, interlaminar shear strength (ILSS) and scanning electron microscopy (SEM) were performed to evaluate the physical and chemical effects of aging on the composite. Aged composites showed reduction in interlaminar shear strength, mass gain, Tg decrease, surface fiber exposure and change in FTIR spectra. Such changes suggest degradative effects of aging.Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/Compósitos - EnvelhecimentoCarbono-epóxiCompósitos PoliméricosbachelorThesisEngenharia de Materiais e MetalúrgicaMateriais não MetálicosPolímeros, Aplicações