NDLI: Investigation on the thermal decomposition and flame retardancy of wood treated with a series of molybdates by TG

Content Provider	Springer Nature Link
Author	Qu, Hongqiang Wu, Weihong Jiao, Yunhong Xie, Jixing Xu, Jianzhong
Copyright Year	2011
Abstract	A flame-retardant wood was prepared using a series of insoluble molybdates through the double bath technique. The flame retardancy of the wood samples was studied with the limiting oxygen index (LOI) method. The relationships between the flame-retardant performance and the thermal property of wood were studied by the thermogravimetry (TG), derivative thermogravimetry (DTG), differential thermal analysis (DTA), scanning electron microscopy (SEM), and the thermogravimetry–mass spectrometry (TG–MS) analysis methods. The results showed that the insoluble molybdates, which were precipitated into the wood by the double bath technique, can obviously improve the flame retardancy of wood. Similarly, the transition metal molybdates showed higher flame-retardant efficiency than the main group metal molybdates do, which probably due to the thermal barrier effect that Fe$_{2}$(MoO$_{4}$)$_{3}$ acts during the combustion of the samples. At the same time, Fe$_{2}$(MoO$_{4}$)$_{3}$ catalyzed the dehydration and carbonization reactions of wood, and caused an increase in the amount of char produced, and an improvement of the stability of the char residue. Moreover, the mass spectrometry results indicated that the excess transition metal ions speed up the deep decomposition of the char residue, and resulting in the smoldering of wood.
Starting Page	269
Ending Page	277
Page Count	9
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	105
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-02-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermal degradation Flame retardancy Wood Molybdates Thermogravimetry–mass spectrometry Inorganic Chemistry Measurement Science and Instrumentation Polymer Sciences Physical Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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