Thermal degradation of wood treated with guanidine compounds in air: Flammability study |
| |
Authors: | Ming Gao Caiyun Sun Kai Zhu |
| |
Institution: | (1) Department of Security and Environmental Engineering, North China Institute of Science and Technology, National Safety Training Center of Coal Mines, P.O. Box 206, Yanjiao Beijing, 101601, P. R. China;(2) Department of Basic Subject, North China Institute of Science and Technology, National Safety Training Center of Coal Mines, P.O. Box 206, Yanjiao Beijing, 101601, P. R. China |
| |
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.This revised version was published online in November 2005 with corrections to the Cover Date. |
| |
Keywords: | DTA pyrolysis wood flame retardant degradation TG |
本文献已被 SpringerLink 等数据库收录! |
|