The usage effect of nano-alumina on the mechanical and surface properties of HDF made of oxidized fibers

Shabanpour, Saeb; Nazarnezhad, Noraldin; Ghorbani, Maryam

doi:10.22092/ijwpr.2018.114650.1432

Document Type : Research Paper

Authors

¹ Masters

² Associate Professor, Department of Wood and Paper Science, Sari University of Agriculture and Natural Resources Sciences, Sari

³ Associate Prof. Department of Wood and Paper Sciences and Technology, Sari University of Agricultural Sciences and Natural Resources, Sari

https://doi.org/10.22092/ijwpr.2018.114650.1432

Abstract

Current research was conducted to investigate the effect of nano Alumina modification on the mechanical and Surface properties of High-Density Fiberboard (HDF) made from oxidized fibers. Surface activation of fiber was done with 40% nitric acid. After fibers gluing with urea-formaldehyde (7% and 9% based on the dry weight of fibers), the boards were made by hot pressing. For veneering, two types of paper with grammage of 70 and 80 g/m2 impregnated with melamine-formaldehyde and nano-alumina 0, 1.5 and 3% were applied. According to the results, the highest bending strength, modulus of elasticity and hardness were measured in nitric acid-modified fibers/ 9% glue/ grammage of 80 g/m2/3% nano-alumina samples that was significant increase compared to the control boards a significant increase. The samples weight loss due to abrasion was decreased with increasing the veneers grammage and nano-alumina, which confirmed the positive effect of nano-alumina. Veneer grammage did not show significant effect on the resistance to cigarette burn, but the highest concentration of nano-alumina resulted to improve this surface resistance via increase of thermal conductivity.

Keywords

Main Subjects

Composite wood products

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The usage effect of nano-alumina on the mechanical and surface properties of HDF made of oxidized fibers

References

References

Volume 33, Issue 2 - Serial Number 63July 2018Pages 196-204

Volume 33, Issue 2 - Serial Number 63
July 2018
Pages 196-204