Drvna industrija, Vol. 69 No. 2, 2018.
Izvorni znanstveni članak
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
; Fakultet znanosti o okolišu, Državno tehničko sveučilište u Quevedu, Quevedo, Ekvador
Luis Valenzuela
; Odjel za gospodarenje šumama i okolišem, Šumarski fakultet, Sveučilište u Concepciónu, Concepción
Hernán Wilson Poblete
; APA-u (Društvo za obradu drva), Valdivia, Čile
Sažetak
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.
Ključne riječi
Particleboard; hygrothermal treatment; Laureliopsis philippiana; urea-formaldehyde; particle geometry; mechanical properties; formaldehyde release
Hrčak ID:
202891
URI
Datum izdavanja:
3.7.2018.
Posjeta: 1.934 *