Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 105: Issue 1
Investigation on the thermal decomposition and flame retardancy of wood treated with a series of molybdates by TG–MS
Authors:
Hongqiang Qu College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China

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Weihong Wu College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
College of Science, Agricultural University of Hebei, Baoding 071001, China

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Yunhong Jiao College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China

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Jixing Xie College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China

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Jianzhong Xu College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China

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Pages:
269–277
Online Publication Date:
11 Feb 2011
Publication Date:
01 Jul 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-011-1313-3
Keywords:
Thermal degradation; Flame retardancy; Wood; Molybdates; Thermogravimetry–mass spectrometry
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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 Fe2(MoO4)3 acts during the combustion of the samples. At the same time, Fe2(MoO4)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.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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