Resumo

MARTINEZ-LOPEZ, Yonny et al. Evaluation of physico-mechanical properties of wood-plastic boards produced in Cuba compared to conventional boards. Rev. Chapingo ser. cienc. for. ambient [online]. 2014, vol.20, n.3, pp.227-236. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2014.02.003.

The physico-mechanical properties of wood-plastic (WP) boards were evaluated and compared with those of conventional boards (sugarcane bagasse particleboard, plywood board and sugarcane bagasse fiberboard) more commonly used in Cuba. The WP board was made with waste from the forestry industry (sawdust), industrial waste (thermoplastics) and chemical additives in amounts of 50, 30 and 20%, respectively; the board was obtained by extrusion molding. Results were analyzed with the Kruskal-Wallis test and Fisher's LSD post-hoc multiple comparisons analysis to determine differences relative to conventional boards. Results indicate that the physical properties of wood- plastic boards improved with increasing density. Water absorption and swelling were lower than in conventional boards, whereas the mechanical properties (bending, compression and tensile strength) were higher. Tensile strength, bending and compression in the wood-plastic boards were statistically similar (P > 0.05) in the plywood. Given their properties, it can be concluded that wood-plastic boards are able to replace both conventional and wood boards in outdoor conditions.

Palavras-chave : Industrial waste; board industry; extrusion; plywood boards.