Mechanical and Thermal Characterization of Natural Intralaminar Hybrid Composites Based on Sisal

Alexandre L. Pereira, Mariana D. Banea, Jorge S.S. Neto, Daniel K.K. Cavalcanti
2020 Polymers  
The main objective of this work was to investigate the effect of hybridization on the mechanical and thermal properties of intralaminar natural fiber-reinforced hybrid composites based on sisal. Ramie, sisal and curauá fibers were selected as natural fiber reinforcements for the epoxy matrix based composites, which were produced by the hand lay-up technique. Tensile, flexural and impact tests were carried out according to American society for testing and materials (ASTM) standards to
more » ... e the hybrid composites, while differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to evaluate the thermal properties. It was found that the mechanical properties are improved by hybridization of sisal based composites. The thermal analysis showed that the hybridization did not significantly affect the thermal stability of the composites. A scanning electron microscopy (SEM) was used to examine the fracture surface of the tested specimens. The SEM images showed a brittle fracture of the matrix and fiber breakage near the matrix.
doi:10.3390/polym12040866 pmid:32283753 fatcat:7urzm6fsofelxprth5nlniubi4