Geopolymers
Inorganic polymeric new materials
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Hongqiang Qu
Hongqiang Qu
College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
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Weihong Wu
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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College of Science, Agricultural University of Hebei, Baoding 071001, China
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Hongjuan Wu
Hongjuan Wu
College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
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Jixing Xie
Jixing Xie
College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
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Jianzhong Xu
Jianzhong Xu
College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
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Abstract
The effect of three flame retardants, K2CO3, Na2SiO3·9H2O, and Na2B4O7·10H2O on the process and composition of volatile products of the thermal degradation of wood has been investigated by the thermogravimetric (TG), differential thermogravimetry (DTG), differential thermal analysis (DTA), and the synchronous thermogravimetry–mass spectrometry (TG–MS) analysis methods. The results showed that the ion current intensity and ion peak area of m/z = 18 and 44 MS signals were increased by the flame retardants but the ion peak area of m/z = 28 MS signal was decreased (except K2CO3) at the meantime. What's more, the ion current intensity and ion peak area of m/z = 60 and 68 MS signals were also decreased (except K2CO3), which mean that Na2B4O7 can significantly enhances the dehydration and inhibits the depolymerization of wood. Although K2CO3 accelerates the dehydration reaction, it cannot inhibit the depolymerization reaction effectively, so the flame retardant efficiency of K2CO3 is decreased with the higher concentration. The catalysis of dehydration reaction of Na2SiO3 is the worst one.
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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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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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