Next Article in Journal
Preparation of Multifunctional [email protected] Core-Shell Nanoparticles with Surface Grafting as a Potential Treatment for Magnetic Hyperthermia
Previous Article in Journal
In vitro Endothelialization and Platelet Adhesion on Titaniferous Upgraded Polyether and Polycarbonate Polyurethanes
Article Menu

Export Article

Open AccessArticle
Materials 2014, 7(2), 637-652;

Comparative Performance of Three Magnesium Compounds on Thermal Degradation Behavior of Red Gum Wood

College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA 70803, USA
Authors to whom correspondence should be addressed.
Received: 31 October 2013 / Revised: 27 November 2013 / Accepted: 16 January 2014 / Published: 24 January 2014
Full-Text   |   PDF [885 KB, uploaded 24 January 2014]   |  


The effect of basic magnesium carbonate (BMC), magnesium hydroxide (MH), and magnesium chloride hydrate (MCH) on thermal degradation of red gum wood was studied using cone calorimetry, Thermogravimetric-differential scanning calorimetry (TG-DSC) analysis, and X-ray diffraction (XRD) characterization. The results showed common fire retardation actions of the three compounds by releasing incombustible gas and/or water vapor to dilute combustible gas in the flaming zone, and by converting to MgO, which had a satisfactory protective wall effect on the wood. Individually, BMC absorbed heat from the wood at the pre-decomposition stage and, thus, slowed down wood pyrolysis process. It slightly increased the char yield by charring in both the charring stage and the char calcination stage. MH lost water at about 270 °C, close to the temperature at which wood thermally degraded. MH rendered wood char quickly, and the compact char layer impeded further carbonization and burning of inner wood. MCH promoted charring with Mg2+ as a Lewis acid, and increased wood char yield. MCH also released Cl· free radical and HCl at 167 °C, which easily coordinated with combustion reaction radical, and slowed down, even inhibited, the combustion chain reaction. View Full-Text
Keywords: magnesium compounds; fire retardant; wood; thermal degradation magnesium compounds; fire retardant; wood; thermal degradation

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Wu, Y.; Yao, C.; Hu, Y.; Zhu, X.; Qing, Y.; Wu, Q. Comparative Performance of Three Magnesium Compounds on Thermal Degradation Behavior of Red Gum Wood. Materials 2014, 7, 637-652.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top