Pinus caribaea var. hondurensis Wood Impregnated with Methyl Methacrylate
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Data
2017-06-01
Autores
Stolf, Denise Ortigosa
Bertolini, Marilia da Silva [UNESP]
Christoforo, Andre Luis
Panzera, Tulio Hallak
Moni Ribeiro Filho, Sergio Luiz
Rocco Lahr, Francisco Antonio
Título da Revista
ISSN da Revista
Título de Volume
Editor
Asce-amer Soc Civil Engineers
Resumo
This paper investigates the normal hardness, the compressive strength, and the modulus (parallel to the grain) of Pinus caribaea var. hondurensis wood in pristine condition and impregnated with methyl methacrylate (MMA) in autoclave at 0.22 and 0.66 MPa. An artificial weathering over a period of 2,400 h was used to better assess its effect upon the mechanical properties of impregnated wood. The analysis of variance identified that MMA impregnation significantly affected the responses; in contrast, no effect was verified by the artificial aging factor. Treated Pinus wood at 0.66 MPa achieved superior mechanical properties compared with the pristine condition, revealing percent increases in compressive strength, stiffness, and hardness of 84, 36, and 347%, respectively. The scanning electron microscopy (SEM) analysis revealed the MMA polymer was able to fill the wood pores completely. Possibly, impregnated Pinus wood can be used in structural applications in civil construction, in addition to being a low-cost specie in comparison to the typical high-density wood commonly used. (C) 2016 American Society of Civil Engineers.
Descrição
Palavras-chave
Polymer-matrix composites (PMCs), Wood, Mechanical properties, Autoclave, Artificial weathering
Como citar
Journal Of Materials In Civil Engineering. Reston: Asce-amer Soc Civil Engineers, v. 29, n. 6, 6 p., 2017.