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| Trianoski, Rosilani; Matos, Jorge Luis Monteiro de; Iwakiri, Setsuo. |
| The Australian cedar (Toona ciliata M. Roem) is a species of high commercial value, with characteristics similar to native mahogany and cedar, which has been highlighted in forest plantations in Brazil, whose wood should be the subject of technological research. The objective of this study was to evaluate the physical, chemical and mechanical properties from planted stands of 18 years old. The wood showed low density (0.330 g cm3), low average dimensional stability (anisotropy: 2.22), high content of extractives (10.33%) and moderate mechanical properties: MOR and MOE to bending: 498 kgf cm-2 and 66,163 kgf cm-2; MOR and MOE for parallel compression: 258 kgf cm-2 and 100.813 kgf cm-2; shear: 82 kgf cm-2 and medium hardness: 208 kgf. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exotic species; Resistance; Dimensional stability; Extractives; Toona ciliata Tecnologia e utilização de Produtos Florestais - Propriedades da madeira Espécie exótica; Resistência; Estabilidade dimensional; Extrativos; Toona ciliata. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/523 |
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| Huller, Lenon Augusto Simon; Haselein, Clóvis Roberto; Silveira, Amanda Grassmann da; Menezes, Walmir Marques de; Talgatti, Maiara; Souza, Joel Telles de; Santini, Elio José. |
| The genera Eucalyptus is widely used by Brazilian industries. Nonetheless some concerns still persist regarding some of its technological properties. Aiming the improvement of the wood properties the heat treatment is being largely employed in Brazil. The objective of this research was to study the effect of heat treatment on physical and mechanical properties of Eucalyptus cloeziana. We sampled 5 trees with 21 years from which we used the first two logs with length of 3 m each. Heat treatment of 160 and 210 °C were applied for 1 h. The evaluate physical properties were equilibrium moisture content, mass reduction, loss of density, total swelling coefficient (linear and volumetric) and coefficient of anisotropy. The determination of the mechanical strength... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dimensional stability; Thermal treatment; Wood quality Recursos Florestais Estabilidade dimensional; Termorretificação; Qualidade da madeira. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1288 |
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