Uso da casca de coco para produção de painéis reconstituídos
The demand for timber products grows annually in Brazil and this fact causes scarcity of forest resources. Therefore, the timber sector seeks alternatives to maintain production and meet the demand for these products. The one of these alternatives is the production of agglomerated panels with lig...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Brasil
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/28739 |
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| Resumo: | The demand for timber products grows annually in Brazil and this fact causes scarcity of forest
resources. Therefore, the timber sector seeks alternatives to maintain production and meet
the demand for these products. The one of these alternatives is the production of agglomerated
panels with lignocellulosic residues. The several studies have been carried out involving the
incorporation of agro-industrial waste in the manufacture of reconstituted panels, such as, the
coconut fiber, sugarcane bagasse, rice hulls, coffee husks, among others, to produce panels.
In this context, the objective was to evaluate the potential use of coconut shell for the
production of reconstituted panels. For this, coconut fiber with an association of wood particles
(Eucalyptus urophylla x Eucalyptus gradis - hybrid) was used in the composition of different
reconstituted products, cementitious panels and agglomerated panels. The technological
characterization of the produced panels was evaluated with mechanical and physical
properties. The physical tests performed were: density, water absorption and thickness
swelling after 2 and 24 h of immersion. For the mechanical tests performed were: static
bending, internal connection and compression. We also evaluated the chemical composition
of the raw material used in the manufacture of the panels. The results obtained for the
cementitious panels indicated that the coconut fiber has the potential to be used in the
manufacture of reconstituted panels, when analyzed only the physical properties. However,
when evaluated the mechanical properties the panels did not present minimum values that the
standards establish to be used for industrial purposes. In addition, for the agglomerated
panels, the results displayed that the product with a 20% substitution of coconut fiber were the
ones that presented better results both in physical and mechanical properties. Finally, the
cementitious panels can be used for indoor environments and those in which it does not need
resistance and agglomerated panels can be used for internal use, the use of coconut fiber
being suitable for the production of agglomerated panels together with eucalyptus wood. |
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