BATISTA, W. W.; http://lattes.cnpq.br/6216349050353010; BATISTA, Wilton Walter.
Résumé:
In this work the mechanical properties of polyester/jute cloth composites were
investigated as a function of fiber surface treatments. Initially the effects of jute content
for treated and untreated fibers on the composite's mechanical properties was evaluated.
The treatments employed were: isocianate, urethane, poh/(vinyl acetate) and maleic
anliidride. The effects of each of these treatments on the composite's mechanical
properties were analysed and the best type and treatment content determinated. The effect
of two kinds of fiber pre-washing (NaOH and neutral detergent solutions) as a means to
increase fiber wettability and therefore the composite's mechanical properties was also
investigated for untreated as well as fibers which, afterwards, were treated with the four
kinds of agents previously mentionated. The mechanical properties of mixed matrix
(polyester/isocianate and polyester/urethane) composites reinforced with jute cloth were
also determinated. The surface treatments employed minimized this effect; mechanical
properties increased with fiber content and the best results were obtained with isocianate
or urethane fiber surface treatment at 10% v/w content. Pre-washing with detergent did
promote a slight increase on mechanical properties while that with NaOH solution was
not succesful. Best mechanical properties were obtained with the mixed
polyester/isocianate or polyester/urethane matrix system, which the most pro missing of
the system investigated.