Effect of granulometry and binder rate on the physical, thermal and mechanical properties of Africa antiaris (Antiaris africana) sawdust particleboard made with the tannic powder of African locust been pod husk (Parkia biglobosa) and the India tamarind (Pithecellobium dulce) peel

摘要

This study aims at appraising the capability of tannic powders of African locust been pod husks (Parkia Biglobosa) and of the India tamarind (Pithecellobium dulce) peel to bind Africa antiaris sawdust particles in order to manufacture environmental panels without formaldehyde emission. In the process, the granulometry has been studied. Thus, four granular groups (g) are obtained: 1.6 < g < 5; 0.8 < g < 1.6; g < 0.8; and the raw sawdust (non-sieved). The panels produced from the different powders havebeen characterized. The mechanical characteristics (MOE: modulus of elasticity and MOR: modulus of rupture) determined by the bending tests are found to respect the threshold specified by the ANSI A208.1 (Medium density fiberboard, National Particle-board Association, Gaithersburg, 2009) standard. The thermal conductivity values of the panels allow concluding that the manufactured panels are conventional insulators according to the French standards RT 2012. The analyses have shown that the panels are of Mean Density inconformity with ANSI A208.1 (Medium density fiber-board, National Particleboard Association, Gaithersburg, 2009) standard.