Treatment of Wood with Flame Retardants and Study on the Thermal Degradation of Treated Wood
|Course||Polymer Chemistry and Physics|
|Keywords||DTA Mechanism Timber Thermal degradation TG Fiber Flame retardant|
The text is divided into three chapters: Chapter : First of all type of wood flame retardant effect and development overview, then describes the research status of flame-retardant wood , and finally described the purpose, significance and conclusions of the research projects , references References 55 . Chapter II : with a series of inorganic compounds , guanidine compounds , phosphoric guanylurea timber fire retardant treatment , the remaining rate of carbon by thermal analysis, infrared spectroscopy, the oxygen index , the residual carbon rate of its flame-retardant properties and The thermal degradation behavior was characterized . Comparison of the sample is not flame-retardant , flame retardant timber has the following changes : ( a ) thermal degradation of the starting temperature is lowered ; oxygen index improver ( b ) ; ( c ) the increase of the residual carbon ratio ; ( d ) thermal degradation of the activation energy is reduced . The same time , the impact of the different elements of wood thermal degradation behavior preliminary discussion during pyrolysis of wood , phosphorus catalytic dehydration and wood degradation reaction , increasing the amount of residual carbon ; nitrogen catalytic deacidification and acid-catalyzed dehydration reaction ; halogen the timber thermal degradation process to generate free radical scavenger ( hydrogen chloride or hydrogen bromide ) to prevent flaming combustion , reduce heat weightlessness ; the boron their pyrolysis behavior has little effect , flame retardant mainly through physical cover . Chapter 3 : hemp fiber processed through a series of analytical methods for several inorganic compounds and metal-containing flame retardants polyacrylonitrile fiber flame retardant properties were characterized , and, specifically, the thermal degradation behavior of the flame-retardant hemp fiber . Through the comparison process with untreated fiber flame retardant and thermal properties , that has greatly improved the flame retardant fibers flame resistance, and flame retardant mechanism and of fibrous thermal degradation behavior of different elements in the preliminary discussion .