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

Drvna industrija

Gutiérrez, Rommel Crespo¹  Poblete, Hernán Wilson²  Valenzuela, Luis³ 

[1] Fakultet znanosti o okoliÅ¡u, Državno tehničko sveučiliÅ¡te u Quevedu, Quevedo, Ekvador;Odjel za gospodarenje Å¡umama i okoliÅ¡em, Å umarski fakultet, SveučiliÅ¡te u Concepciónu, Concepción;School of Forest Engineering, Faculty of Environmental Sciences, State Technical University of Quevedo, Quevedo, Ecuador

关键词: Particleboard;    hygrothermal treatment;    Laureliopsis philippiana;    urea-formaldehyde;    particle geometry;    mechanical properties;    ...;   

DOI  :  10.5552/drind.2018.1715

学科分类：农业科学（综合）

来源: Sveuciliste u Zagrebu

【 摘 要 】

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.

【 授权许可】

CC BY