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vol.15 número1VARIABILIDAD DE LAS PROPIEDADES FISICAS, MORFOLOGICAS Y TERMICAS DE LA FIBRA DE CORTEZA DE Eucalyptus nitens índice de autoresíndice de assuntospesquisa de artigos
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Maderas. Ciencia y tecnología

versão On-line ISSN 0718-221X

Resumo

MORENO, Pablo et al. MORPHOLOGICAL AND MECHANICAL CARACTERIZATION OF RECYCLED THERMOPLASTIC FOAMS REINFORCED WITH WOOD SUB-PRODUCTS. Maderas, Cienc. tecnol. [online]. 2013, vol.15, n.1, pp.03-16.  Epub 06-Dez-2012. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2013005000001.

The objective of the present study was to observe the morphology and characterize the mechanical properties of wood plastic composite foams. Recycled high density polyethylene was mixed with Pinus radiata D. Don (radiata pine) wood fiber of 60 mesh. The fiber concentrations were 15 and 25% by weight. The compounds were foamed with a chemical agent ACA (azodicabonamide) and MAPE (Epolene E-20) was used as a coupling agent. The composites were obtained by twin-screw extrusion. The results showed that the coupling agent has a positive effect on the adhesion of the recycled polymer and wood fiber. The density of the compounds decreases with blowing agent and the mechanical properties of hardness, impact, modulus of elasticity in bending and tension were higher for unfoamed composites. It was concluded that increasing the concentration of fiber increases the mechanical properties with the exception of impact resistance of the compounds and incorporating the blowing agent slightly.

Palavras-chave : Wood plastic composite; recycled polyethylene; azodicarbonamide; mechanical properties; radiata pine.

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