Caracterização físico-mecânica de painéis OSB produzidos com lascas de madeira tratadas com CCA

• Autor(a) principal: Sola, Maria Beatriz Macedo Simon [UNESP]
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203710; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2020-01-20/000919601.pdf
• topic: Painéis de madeira; Pinus taeda; Madeira - Preservativos; Paneling

The increasing use of wood based panels in construction creates the need to extend thair useful life without compromising the physical and mechanical properties. In order not occur so that there is deterioration are available some methods and preservatives that seek to increase the resistance against wood decay organisms. Among which the most widely used in Brazil and in the world are the water-soluble chemical preservatives using the full cell method, which aims to impregnate the largest number of cells with the preservative solution. The CCA (Chromated Copper Arsenide) has as main features high efficiency and fixation making this the most widespread preservative among companies of treatment. It is applied on the product through the timber exposure in an autoclave chambers. The purpose of this study is to produce OSB with Pinus taeda wood using phenol formaldehyde resin, performing the treatment procedure to the panel already formed and to the stands and subsequently production. The study includes evaluating the changes in the physical and mechanical properties of the panels, using as reference plates for analysis of the results panels produced without chemical treatment, standard and commercial values for OSB. the physical-mechanical characterization was carried out meeting the specifications of the normative documents EN 322/2000, 323/2000 EN, EN 317/2000, 310/2000 EN, EN 319/2000. From the tests performed it was possible to conclude that the treatment of the panels as well as the treatment of the strands resulted in changes in the physicalmechanical properties improving or worsening them. However, the treatment of strands (T3), even though it did not meet all aspects of normative performance, obtained results closer to the control, indicating that with adjustments, its use in the productive process becomes viable