›› 2002, Vol. 22 ›› Issue (2): 31-34.
• 研究报告 • Previous Articles Next Articles
HU Yun-chu
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Abstract: The synthetic conditions of tetrabromobisphenol A were studied.Char yield and thermokinetic parameters during pyrolysis of wood treated with tetrabromobisphenol A were studied by TG-DTA method.Results showed that tetrabromobisphenol A yield increased from 70.7% to 85.6%,and bromine content increased from 54.1% to 55.4% as the condition was converted from room temperature to ice-water bath.The yield increased from 85.6% to 93.4% as benzene was used as a solvent to replace alcohol.The yield increased from 93.4% to 94.2%,bromine content increased from 56.1% to 58.8% and melting point reached 179.0-181.3℃ as the dosage of raw materials changed from 1:2 to 1:2.4.The char yield increased from 31.2% to 45.4%, after Cunninghamia lanceolata wood was treated with tetrabromobisphenol A.By elution experiment,char yield loss of wood treated by ammonium phosphate is 26.7%,compared to 4.27% by tetrabromobisphenol A.Optimum synthetic condition of tetrabromobisphenol A is in ice-water bath with benzene as solvent by raw material ratio 1:2.2-2.4.The pyrolysis process of wood can be changed by tetrabromobisphenol A during fire-retarding process.Tetrabromobisphenol A possesses not only strong fire-retarding ability on wood but also strong resistance against leaching.
Key words: tetrabromobisphenol A, fire retardation of wood, thermokinetics
CLC Number:
S781.46
HU Yun-chu. STUDIES ON SYNTHESIS AND FIRE RETARDANCE OF TETRABROMOBISPHENOL A[J]. , 2002, 22(2): 31-34.
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