Efeito da inclusão laminar nas propriedades de painéis aglomerados fabricados com resíduos da indústria laminadora

• Autor(a) principal: Mendoza, Zaíra Morais dos Santos Hurtado de
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/552
• topic: Aglomerado; Inclusão laminar; Resíduos; Paricá; Agglomerated; Laminate inclusion; Residues; Paricá; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS

The interest in using wood industry residues motivated this research work, which aimed to produce agglomerate panels with three different lamination waste types of Schizolobium amazonicum Huber ex. Ducke (Paricá), applying the laminas inclusion s technique. Ureaformaldehyde adhesive and sodium silicate were used for agglomerating, at 8% content and 10%, respectively. The panels physical tests and mechanical were made according to Associação Brasileira de Normas Técnicas (Brazilian Association of Technical Standards) - ABNT/NBR 14810-3(2002). The results were compared with these standards, with American National Standards Institute - ANSI/A-208.1(1993), and with Deutsches Institut für Normung - DIN 68m 761-1(1961). It is concluded that the waste from laminator industry can be used as feedstock for producing particleboard panels. It is possible to include laminas on the agglomerate s structural composition, such as an improvement. The laminas inclusion reduced the water absorption and thickness swelling after two and twenty-four hours of immersion, and also contributed to increasing the rupture modulus and the panel s elasticity modulus. Sodium silicate adhesive was more hydrophilic than the urea-formaldehyde adhesive and should not be used in outdoors panels. Immersion for two hours led to more water absorption and to a thickness swelling increasing, regardless of panel type and class of adhesive. The rupture modulus, the elasticity modulus, the Janka hardness, and the screw withdrawal had a positive correlation, regardless of the panel type and adhesive. The waste type affected the panel physical properties and mechanical, and those made with wood chips showed, overall, the best properties. The panels made from wood chips stuck with urea-formaldehyde adhesive at 8%, making the laminas inclusion in the face/counterface with a compression ratio of 1.7, met the most standards requirements, resulting in adhesive economy.