Fire-retardant mechanism of fire-retardant FRW by FTIR |
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| Authors: | Qingwen Wang Jian Li Shujun Li |
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| Institution: | (1) Research Institute of Wood Science and Technology, Northeast Forestry University, Harbin, 150040, China |
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| Abstract: | The structures of the solid state products formed by the partial combustion of Korean pine wood treated with fire-retardant
FRW were analyzed by microscopic FTIR. The volatile pyrolytic products of basswood (Tilia amurensis) specimens treated with FRW and its components guanylurea phosphate and boric acid were analyzed by GC-FTIR. The pyrolytic
and charring process, the effects of fire-retardant, and the structural characteristics of the pyrolytic products were discussed.
It was concluded that upon heating and by the catalysis of FRW and its decomposition products reactions of wood took place
successively, namely the dehydration of polysaccharide, the elimination of acetic acid from hemicellulose, the degradation
of polysaccharide, the degradation of lignin, the polymerization of the pyrolytic products of wood, reactions of oxygen-element-elimination
of aliphatic polymers and the structural change of the latter to form aromatic structures, and charring. The pyrolysis process
of wood was altered and the yield of volatile pyrolytic products was decreased by FRW treatment.
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Translated from Scientia Silvae Sinicae, 2005, 41(4): 149–154 译自: 林业科学, 2005, 41(4): 149–154] |
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| Keywords: | wood fire-retardant FRW fire-retardant mechanism FTIR GC-FTIR |
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