Tensile Behavior of lignocellulosic reinforced polyester composites: Part III coir fiber

Materia

Lopes, F.P.D.¹  Santafé Júnior, H.P.G.¹  Monteiro, S.N.¹  Costa, L.L.¹ 

[1] State University of the Northern Rio de Janeiro, Campos dos Goytacazes, Brazil

关键词: Coir fibers;    polyester composites;    tensile properties;    fracture analysis.;   

DOI  :  10.1590/S1517-70762010000200017

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The fiber extracted from the husk of a coconut fruit, known as coir fiber, has been extensively investigated as a second phase incorporation into polymer composites. The moderate strength of the coir fiber usually does not represent reinforcement to relatively strong thermoset matrices such as polyester, epoxy and phenolic. However, a selection of thinner coir fibers and a post cure treatment of the composite could improve its mechanical performance. Therefore, this work investigated the tensile properties of post-cured polyester matrix composites incorporated with the thinnest coir fiber. Tensile specimens with up to 40% in volume of long and aligned coir fibers were tested and their fracture analyzed by scanning electron microscopy. A relatively improvement was found in the tensile properties for the amount of 40% of coir fiber. These results were compared with similar composites that were bend-tested. The fracture analysis showed a comparatively better fiber/matrix adhesion.

【 授权许可】

CC BY