Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 75, Issue 1, Pages 221-232Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/B:JTAN.0000017344.01189.e5
Keywords
degradation; DTA; flame retardant; pyrolysis; TG; wood
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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 800degreesC 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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