| Journal: | Maderas : ciencia y tecnología |
| Database: | |
| System number: | 000544615 |
| ISSN: | 0718-221X |
| Authors: | Bufalino, Lina1 Ribeiro Corrêa, Andrea Aparecida1 de Sá, Vânia Aparecida1 Marin Mendes, Lourival1 Amarante Almeida, Natália1 Dordenoni Pizzol, Vinnicius1 |
| Institutions: | 1Federal University of Lavras, Department of Forest Science, Lavras, MG. Brasil |
| Year: | 2015 |
| Season: | Ene |
| Volumen: | 17 |
| Number: | 1 |
| Pages: | 105-116 |
| Country: | Chile |
| Language: | Inglés |
| English abstract | This work aimed to investigate the feasibility of using and mixing Toona ciliata, Eucalyptus urophylla/grandis and Pinus oocarpa woods in OSB production. Three one- species and four mixed-species combinations were compared. Layer structure varied by positioning different wood species in the surface and core of the panels. Phenol- formaldehyde (PF) adhesive was applied at 9% for all OSB panels. Three-layer mats with mass proportion of 25/50/25% for surface/core/surface were produced. Pressing time was 8 min, under a 4 MPa pressure and temperature of 180°C. Physical and mechanical properties were evaluated and compared to EN (300) commercialization standard. Most OSB panels did not fully attain such requirements. OSB panels made with Eucalyptus urophylla/grandis and Pinus oocarpa woods have potential to be commercialized as OSB/1 and OSB/2 types, respectively. Among panels made with T. ciliata wood, those produced with this species in the surface and Eucalyptus urophylla/grandis wood in the core met the requirements established for OSB/1 commercialization. Eucalyptus wood has great potential to substitute Pinus wood in OSB production. The utilization of T. ciliata wood for OSB production decreased mechanical performance, but remarkably enhanced water resistance properties. |
| Keyword: | Hardwoods, Compression ratio, 3-layer mats |
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