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Journal of Nanomaterials
Volume 2014, Article ID 878357, 6 pages
http://dx.doi.org/10.1155/2014/878357
Research Article

The Fabrication and Properties Characterization of Wood-Based Flame Retardant Composites

1Material Science and Engineering College, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
2College of Science, Central South University of Forestry and Technology, Changsha, Hunan 410004, China

Received 31 March 2014; Accepted 9 May 2014; Published 26 May 2014

Academic Editor: Sanqing Huang

Copyright © 2014 Xia He 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.

Abstract

Wood-based flame retardant composites were fabricated based on vacuum-pressure impregnating method after high intensive microwave pretreatment. The effects of ammonium polyphosphate (APP) and modified nano-zinc borate (nZB) addition on flame-retardation and smoke-suppression properties of wood were investigated by cone calorimeter method (CONE) and thermogravimetric analysis (TGA). The results show that the heat release rate (HRR), peak heat release rate (pk-HRR), and total heat release (THR) of APP-treated woods decreased greatly with increasing concentration of APP. However, mean yield of CO (Mean COY) of APP-treated wood was much higher (3.5 times) than that of untreated wood. Compared with wood treated with APP at a concentration of 15%, the total smoke product (TSP), Mean COY, and pk-HRR decreased by 78.4%, 71.43%, and 31.23%, when wood was treated with APP and nZB (both concentrations were at 15%). APP and nZB have synergistic effects of flame-retardation and smoke-suppression. Nano-zinc borate combined with APP would be used in wood-based composites to efficiently retard flame, reduce fire intensity, and decrease noxious (CO)/smoke release.