Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

Abstract

is study aimed to evaluate the feasibility of using and influence of alternative wood species such as Cambará, Paricá, Pinus, and wood from first thinning operations on oriented strand board (OSB) physical and mechanical properties. Besides that, an alternative resin, castor oil-based polyurethane, was used to bond the particles, due to the better environmental performance when compared to other resins commonly used worldwide in OSB production. Physical properties such as the moisture content, thickness swelling, and water absorption, both after 2 and 24 hours of water immersion, and mechanical properties such as the modulus of elasticity and resistance in static bending, in major and minor axes, and internal bonding were investigated. All tests were performed according to European code EN 300:2006. Results showed the influence of wood species on physical and mechanical properties. Panels made with higher density woods such as Cambará presented better physical performance, while those made with lower density woods such as Pinus presented better mechanical properties. Besides that, strand particle geometry was also influenced on all physical and mechanical properties investigated. erefore, the feasibility of using alternative species and wood from first thinning and with castor oil-based polyurethane resin in OSB production was verified.

Use of Residues From the Cellulose Industry and Sugarcane Bagasse in Particleboards

“…Commercial resins such as urea-formaldehyde and phenolformaldehyde release formaldehyde gas throughout the production process, which is toxic to humans (Kusumah et al 2017;Muttil et al 2014;Pan et al 2007;Zhou & Pizzi 2014). An alternative to the use of these adhesives is the castor oil-based bicomponent polyurethane resin, with oil of vegetable origin and without emission of toxic gases (Ferro et al 2018;Fiorelli et al 2019;Zau et al 2014).…”

Comparative Studies on Two Types of OSB Boards Obtained from Mixed Resinous and Fast-growing Hard Wood

“…Dixon and his group [21] found a process for modeling a bamboo OSB from the point of view of the modulus of elasticity on the major and minor axes. Ferro and group [22], as a solution, replaced mature softwood species with juvenile woods and used castor oil-based polyurethaneas an adhesive. All determinations were in accordance with EN 300:2006 [2] and showed higher strengths than the reference ones; the boards made of high-density species showed better physical performance, and the boards made of wood species with higher density, added little by little, had high mechanical properties.…”