|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-124: Study on the Effect of Ultraviolet Radiation on Interfacial Resistance between Polyaramide Thermoset Resin
||Anderson Oliveira da Silva, Karollyne Gomes de Castro Monsores, Suzane Oliveira, Géssica Nicolau, Pedro Passalini, Ricardo Weber, Sérgio Monteiro
|On-Site Speaker (Planned)
||Anderson Oliveira da Silva
The use of synthetic fibers in the production of composites has relevance because they confer excellent properties to these materials. The polyaramide fiber stands out for its excellent properties, such as low density, high specific strength, and toughness. Due to the smooth surface and the inert chemical structure of these fibers, the surface adhesion with a polymeric matrix becomes weak, reducing the final properties of the material. In this work the polyaramid fiber was exposed to 2 times of ultraviolet radiation, aiming to improve the interfacial resistance between fiber and epoxy matrix. This evaluation was performed by FTIR, SEM and interfacial resistance was performed through the pull-out test. The FTIR results showed that ultraviolet radiation times do not result in significant structural changes in polyaramide fiber. The interfacial resistance was improved with the increase of the exposure time, attributed mainly by the roughness generated in the fibers after the irradiation.