Confecção e avaliação de chapas de madeira aglomerada com aproveitamento de resíduos de marcenaria industrial

• Ano de defesa: 2014
• Autor(a) principal: Marton, Ademir [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Chapa de madeira aglomerada; Madeira - Subprodutos; Residuos vegetais; Gomas e resinas; Wood By-products
• Link de acesso: http://hdl.handle.net/11449/123153; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/23-04-2015/000823245.pdf

This work presents a study for making particleboard bonded wood employing cabinetmaking industrial waste (sawdust) in the region of São José do Rio Preto - SP. Initial exploratory studies were conducted aiming to evaluate the performance of single-component polyurethane adhesives Fastbond 30-NF , Purbond HB S109 and folmaldheyde with respect to the parameters for making the particleboards, then after determining the physical properties of the particleboards have been proposed adjustments the parameters and performed new stage for making slabs are employing resin urea formaldehyde (UF) and polyurethane resin derived from castor oil (PU - castor oil) . In this new stage, employing 10 % of resin (UF - and PU Castor oil), pressure 5MPa, PU - 110 0 C to 130 0 C for UF and Castor, 10 minutes pressing time, being three minutes early with 30 second pressure relief and pressure 7 minutes to complete the cycle. The particleboards were evaluated with respect to their bulk densities, thickness swelling after 2 and 24 hours of immersion, water absorption after 2 and 24 hours of immersion, the flexural modulus (MOR), modulus of elasticity (MOE), resistance the perpendicular drift (RTP) and pullout surface and top ( AP- F and AP -T ). These properties were evaluated for Commercial Standard Brazilian Association of Technical Standards (NBR), European Committee for Standardization (EN ), commercial standard ( CS ) and based on statistical analysis , we investigated the influence of the type of adhesive to the physical and mechanical properties