Table of Contents
International Journal of Carbohydrate Chemistry
Volume 2011 (2011), Article ID 146763, 6 pages
Research Article

Effect of Addition of Boric Acid and Borax on Fire-Retardant and Mechanical Properties of Urea Formaldehyde Saw Dust Composites

1Cellulose and Paper Department, National Research Center, Dokki 12622, Cairo, Egypt
2Packaging and Packing Department, National Research Center, Dokki 12622, Cairo, Egypt

Received 12 June 2011; Revised 27 August 2011; Accepted 28 August 2011

Academic Editor: R. J. Linhardt

Copyright © 2011 Zenat A. Nagieb et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Properties of the flame retardant urea formaldehyde (UF) board made from saw dust fibers were investigated. Flame retardant chemicals that were evaluated include boric acid (BA) and borax (BX) which were incorporated with saw dust fibers to manufacture experimental panels. Three concentration levels, (0.5, 1, and 5%) of fire retardants and 10% urea formaldehyde resin based on oven dry fiber weight were used to manufacture experimental panels. Physical and mechanical properties including water absorption, modulus of rupture (MOR), and modulus of elasticity (MOE) were determined. The results showed that water absorption and bending strength decreased as the flame retardant increased. The highest concentration of (BA + BX) enhanced the fire retardant more than the lower ones. Scanning electron microscope and FTIR of composite panels were studied.