FLEXURAL MECHANICAL CHARACTERIZATION OF POLYESTER COMPOSITES REINFORCED WITH CONTINUOUS RAMIE FIBERS STALK
Lucas de Almeida Pontes, Pedro Amoy Netto, Jordana B. Ferreira, Jean Igor Margem, Frederico Muylaert Margem, Sergio N. Monteiro
State University of the Northern Rio de Janeiro, UENF, Advanced Materials Laboratory, LAMAV; Av. Alberto Lamego, 2000, 28013-602, Campos dos Goytacazes, Brazil
Keywords: ramie fiber, polyester composite, flexural properties, fracture analyses.
This work investigated polyester matrix composites reinforced with ramie fibers for their flexural behavior. Specimens with different percentages (0,10,20 and 30%) of continuous and aligned ramie stalk fibers volume were bend-tested until rupture. The results showed increase in both the composite mechanical strength and the stiffness with these fibers incorporation. A fractograph analysis by SEM disclosed a moderate adhesion mechanism between the fiber and the polyester matrix. This mechanism is apparently responsible for the improved performance of the composites.