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Abstract  

1,2,4-triazole-3-one (TO) and guanidine nitrate (GN) have the potential to be used as alternative gas-generating agents. To obtain a better understanding of thermal decomposition properties of TO/GN mixtures, sealed cell differential scanning calorimetry, thermogravimetry–differential thermal analysis–infrared spectroscopy (TG–DTA–IR), and thermogravimetry–differential thermal analysis–mass spectrometry (TG–DTA–MS) were carried out. The endothermic peak and onset temperatures of TO/GN mixtures were lower than those of individual TO and GN. TG–DTA–IR and TG–DTA–MS showed that the mass of TO/GN mixtures decreased with heat generation and N2 evolved as the major gas during thermal decomposition. The interaction between TO and nitric acid from the dissociation of GN is proposed for the thermal decomposition of TO/GN mixtures.

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Journal of Thermal Analysis and Calorimetry
Authors: Sanjiv Arora, Mahesh Kumar, and Mahender Kumar

as solvent. While in this study, wood was impregnated with guanidine nitrate (GUN) and along with small amount of bases/catalysts such as N , N -dimethylformamide (DMF), 4-dimethylaminopyridine (DMAP), pyridine (Py), and triethylamine (TEA). Thus

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Abstract  

Wood has been treated with guanidine phosphate, guanidine nitrate, guanidine carbonate and guanidine chloride to impart flame retardancy. The samples were subjected to differential thermal analysis (DTA) and thermogravimetry (TG) from ambient temperature to 800°C in air to study their thermal behaviors. From the resulting data, kinetic parameters for different stages of thermal degradation were obtained following the method of Broido. For the decomposition of wood and flame retardant wood, the activation energy was found to decrease from 116 to 54 kJ mol–1; the char yield was found to increase from 5.6 to 34.9%, LOI from 18 to 41.5, which indicated that the flame retardancy of treated wood was improved. Effects of the different compounds on the degradation and flammability of wood have also been proposed.

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, S , Miyake , A . 2010 . Thermal decomposition properties of 1,2,4-triazole-3-one and guanidine nitrate mixtures . J Therm Anal Calorim . 102 : 513 – 516 10.1007/s10973-010-0976-5 . 4

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– 189 10.1007/s10973-011-1605-7 . 9. Arora S , Kumar M . Catalytic effect of bases in impregnation of guanidine nitrate on Poplar (Populus) wood—flammability and

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