Painéis de partículas termorretificadas produzidos com resíduos de madeira de Pinus proveniente de embalagens

• Ano de defesa: 2013
• Autor(a) principal: Andrade, Paulo Ivan Lima de
• Orientador(a): Vital, Benedito Rocha
• Banca de defesa: Cabral, Carla Piscilla Távora , Barcellos, Daniel Camara , Carvalho, Ana Márcia Macedo Ladeira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Ciência Florestal
• Departamento: Manejo Florestal; Meio Ambiente e Conservação da Natureza; Silvicultura; Tecnologia e Utilização de
• País: BR
• Palavras-chave em Português: Propriedades; Resíduo sólido urbano; RSU; Adesivo
• Palavras-chave em Inglês: Properties; Urban solid waste; MSW; Adhesive
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS
• Link de acesso: http://locus.ufv.br/handle/123456789/3129

The industry of wood based panels occupies a strategic position in the market due to the possibility of using wood waste as raw material. However, the high dimensional instability of this type of panel is a problem that causes limitation to their use. The aim of this study was to evaluate the effect of heat treatment on properties of particleboards produced with wood waste of Pinus sp., used for packing. Adhesive of urea-formaldehyde at a concentration of 8% was used. The panels were produced with 4 proportions of particles heattreated (25, 50, 75 and 100%), at 3 levels of temperatures of heat treatment (180, 200 and 220 º C) and 3 repetitions were conducted, totalizing 36 panels. For comparison, 9 panels were made by using particles without heat treatment, with the following variations in the adhesive formulation 1) Urea-formaldehyde (UF); 2) Urea-formaldehyde adding paraffin (UF + P); 3) Phenol-formaldehyde (FF), totalizing 45 panels. The physical and mechanical tests were performed according to the ABNT/NBR 14810-3 (2002) norm. The results were compared with to the standard and norms ANSI/A-208.1 (1993) and DIN 68 761 (1) - 1961 (SANTANA and PASTORE, 1981). In general, the addition of heat-treated particles improved the dimensional stability of the panels, however, it reduced their mechanical properties. The use of the adhesive phenol-formaldehyde or paraffin improved the dimensional stability of the panels. Panels produced only with heat-treated particles showed lower moisture content of hygroscopic equilibrium, adsorption of water steam and thickness swelling than panels manufactured with the adhesive of urea-formaldehyde more paraffin. Panels produced only with heat-treated particles showed lower moisture content of hygroscopic equilibrium and adsorption of water steam than those manufactured with the adhesive based phenol-formaldehyde.