Dissertation > Industrial Technology > Light industry,handicrafts > Wood processing industry,furniture manufacturing industry > Processing

Treatment of Wood with Flame Retardants and Study on the Thermal Degradation of Treated Wood

Author GaoMing
Tutor TianChunMing
School Hebei University
Course Polymer Chemistry and Physics
Keywords DTA Mechanism Timber Thermal degradation TG Fiber Flame retardant
Type Master's thesis
Year 2002
Downloads 258
Quotes 3
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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 .

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