Flame retardancy and thermal degradation behavior of red gum wood treated with hydrate magnesium chloride

Authors

Yiqiang Wu, Central South University of Forestry and Technology
Chunhua Yao, Central South University of Forestry and Technology
Yunchu Hu, Central South University of Forestry and Technology
Shoulu Yang, Central South University of Forestry and Technology
Yan Qing, Central South University of Forestry and Technology
Qinglin Wu, LSU Agricultural Center

Document Type

Article

Publication Date

9-25-2014

Abstract

Flame retardancy and thermal degradation of wood treated with magnesium chloride (MgCl2·6H2O) were investigated. Results showed that MgCl2·6H2O decreased flame intensity and heat release rate, and reduced smoke concentration and gas yield. From ambient temperature to 250°C, MgCl2·6H2O reduced wood combustibility by gas dilution mechanism. The chemical started to decompose at 350°C and produced MgOHCl, in which -Cl and -Mg free radicals were generated and intervened the chain reactions of wood combustion. Hydrogen chloride gas generated promoted wood charring. MgCl2·6H2O gradually converted to MgOHCl and MgO compounds at higher temperatures, and MgO suppressed wood combustion by the wall effect mechanism. © 2013 The Korean Society of Industrial and Engineering Chemistry.

Publication Source (Journal or Book title)

Journal of Industrial and Engineering Chemistry

First Page

3536

Last Page

3542

Recommended Citation

Wu, Y., Yao, C., Hu, Y., Yang, S., Qing, Y., & Wu, Q. (2014). Flame retardancy and thermal degradation behavior of red gum wood treated with hydrate magnesium chloride. Journal of Industrial and Engineering Chemistry, 20 (5), 3536-3542. https://doi.org/10.1016/j.jiec.2013.12.046