Original scientific paper

https://doi.org/10.5552/drind.2018.1715

Mechanical Properties and Formaldehyde Release of Boards Manufactured with Hygrothermally Treated Tepa (Laureliopsis Philippiana Looser) Particles

Rommel Crespo Gutiérrez orcid.org/0000-0002-4013-6362 ; School of Forest Engineering, Faculty of Environmental Sciences, State Technical University of Quevedo, Quevedo, Ecuador
Luis Valenzuela ; Department of Forest Management and Environment, Faculty of Forestry, University of Concepción, Concepción- Chile
Hernán Wilson Poblete ; APA (The Engineered Wood Association), Valdivia-Chile

Abstract

Three layer particleboards were manufactured using hygrothermally treated and untreated tepa (Laureliopsis philippiana) particles with urea-formaldehyde (UF) resin. Hygrothermal treatment consisted of autoclaving particles at 150 °C for 90 min (430 kPa) in a steam saturated atmosphere. A decrease in density and slenderness ratio in treated particles was observed. Modulus of elasticity (MOE) and modulus of rupture (MOR) in static bending, internal bond (IB), and formaldehyde release were determined. An increase in MOE, MOR and IB, as well as a decrease in formaldehyde release, was reported in boards made from heat treated particles.

Keywords

Particleboard; hygrothermal treatment; Laureliopsis philippiana; urea-formaldehyde; particle geometry; mechanical properties; formaldehyde release

Hrčak ID:

202891

URI

https://hrcak.srce.hr/202891

Publication date:

3.7.2018.

Article data in other languages: croatian

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