Tensile and Impact Properties of Two Fiber Configurations for Curaua Reinforced Composites
Natural fibers have been extensively investigated in the past decades, due to their good properties, lightweight, low cost and renewable nature. From the ananas erectifolius plant, high strength and high modulus curaua fibers can be obtained. Their remarkable properties make them adequate to several high performance applications. In the present work, tensile and impact properties of two fiber configurations for curaua reinforced composites were investigated: a non-woven fiber fabric (NWFF) and high percentage continuous and aligned fiber (HPCAF) composites, using epoxy and polyester as polymeric matrix, respectively. The results showed that the fabric configuration does not effectively reinforce the polymer on tensile load, in spite of promoting significant improvement on the impact properties of the composite. The latter configuration results in both high strength and tough composites, however, its ability to resist to impacts depends on the direction of load.
KeywordsNatural fibers Curaua fibers Composites Mechanical properties
The authors thank the Brazilian agencies CAPES and CNPq for the financial support, and LNDC/UFRJ for performing the tensile tests.
- 4.Monteiro, S. N., Lopes, F. P. D., Barbosa, A. P., Bevitori, A. B., Silva, I. L. A., & Costa, L. L. (2011). Natural lignocellulosic fibers as engineering materials—An overview. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 42A, 2011–2963.Google Scholar
- 11.Amaral, C. R., Rodriguez, R. J., Garcia, F. G., Junior, L. P. B., & Carvalho, E. A. Impact of aliphatic amine comonomers on DGEBA epoxy properties. Polymer Engineering & Science, 54(9), 2132–2138.Google Scholar