| Medium-density fiberboard is often used in many aspects such as indoor decoration,furniture manufacture and building.It closely related with people's life, fast growing in recent years. On the other hand, Medium-density fiberboard is extremely easy to burn. So treatment of Medium-fiberboard Fire-retardant and further investigate to thermal degradation behavior have realistic significance.In this research, MDF was treated by some daily inorganic fire-retardance, organic amino resin fire-retardance. Using oxygen index law, hot analytic approach, infrared spectrum,etc to study the effort of MDF with fire-retardance, flame -retardant mechanism , chemical composition, the thermodynamics parameter,etc which have been signified. Thermal degradation behavior was carried on systematic research and discussion to the flame-retardant MDF.The test result shows: the treated samples ,there are following changes (1)The flame-retardant MDF's oxygen index is increased. (2) Thermal degradation's initial temperature is to reduce, stop temperature is to improve, i.e. the block temperature of whole response becomes wide. (3)The weightless speed is slackened, the weightless rate reduce, the char yield rate increases. (4)Energies activation change (5) Reactive exothermic course relaxation of changing, exothermic peak changed by sharp, narrow to dull, wide. (6)Burn have administrative levels , fire-retardant MDF's infrared spectrogram trend that demonstrate ahead of time transforming into stable charcoal structure. (7) Stop temperature of sample that organic compound deal with is higher than the sample's that inorganic compound deal with. Because different flame-retardance, there are different function way to react the Medium-density board, i.e. flame-retardance mechanism was not the same. The analysis to the fire-retardant and thermal degradation behavior of Medium-density fiberboard can offered the theoretical foundation to look for the high-efficiently, new flame-retardance.
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