COSTA, R.; COSTA, Regeildo.
Résumé:
In this deals couth unsaturated polyester / jute composites reinforced
by jute yarns having two different diameters. Tensile, flexural, toughness and Izod
impact tests were conducted at room temperature.
The influence of three different kinds on fiber surface treatments and
of matrix modification on the conventional mechanical as well as on the fracture
toughness of the polyester / jute composites were investigated.
Our results indicate that the yam diameter as well as the surface
treatment employed affected the composite's behavior. In general, composites
reinforced with jute yarns having 0.8 mm ( 10/2 ) exhibited superior in conventional
mechanical properties than those, reinforced with jute yarns of 1,4 mm in diameter
( 10/4 ) Izod impact strength of the composites increased with fiber content.
Fracture toughness testing were conducted according with ASTM E-
399 rules with 3-point bending specimens. The polyester / jute composites were
tougher that the matrix and composites reinforced with thicker yarns ( 1 0 / 4 ) were
tougher than those reinforced with thinner yarns ( 10/2 ).
