The synthesis, properties and flame retardation of two kinds of flame retardants, mono(1 chloride 2 hydroxy propyl) phosphate and antimony mono(1 chloride 2 hydroxy propyl)phosphate were reported. Mono(1 chloride 2 hy...The synthesis, properties and flame retardation of two kinds of flame retardants, mono(1 chloride 2 hydroxy propyl) phosphate and antimony mono(1 chloride 2 hydroxy propyl)phosphate were reported. Mono(1 chloride 2 hydroxy propyl) phosphate was synthesized from epichlorohydrin and phosphoric acid at molar ratio of 1∶1.2 in the solvent of methyl benzene with AlCl 3 catalyst under the conditions of reaction temperature of 90 ℃ and reaction time of 2 h, its total yield is 82.5%. Antimony mono(1 chloride 2 hydroxy propyl)phosphate was synthesized from mono(1 chloride 2 hydroxy propyl)phosphate and antimony trioxide in the solvent of dimethyl sulfoxide with oxalic acid catalyst under the conditions of reaction temperature of 92 ℃ and reaction time of 4 h, the total yield is 85.6%. The physical chemical properties of the products were determined. When adding 15% of mono(1 chloride 2 hydroxy propyl) phosphate and antimony mono(1 chloride 2 hydroxy propyl)phosphate in polyethylene respectively, the oxygen indexes (OI) are 31.4 and 33.7 respectively. [展开更多
通过氧指数、垂直燃烧、热失重、锥形量热和电镜扫描等研究了由双酚 A 双(磷酸二苯酯)(BDP)与聚磷酸铵(APP)组成的膨胀型阻燃剂对环氧树脂的阻燃性能和阻燃机理。结果表明,BDP/APP 膨胀型阻燃剂对环氧树脂有较好的阻燃性能,使环氧树脂...通过氧指数、垂直燃烧、热失重、锥形量热和电镜扫描等研究了由双酚 A 双(磷酸二苯酯)(BDP)与聚磷酸铵(APP)组成的膨胀型阻燃剂对环氧树脂的阻燃性能和阻燃机理。结果表明,BDP/APP 膨胀型阻燃剂对环氧树脂有较好的阻燃性能,使环氧树脂氧指数达到29.9%,垂直燃烧通过 UL94 V-0级,500℃残炭量达到34 8%,平均热释放速率下降70.7%,热释放速率峰值下降67.3%,有效燃烧热平均值下降24.1%。扫描电镜分析表明,经膨胀阻燃剂阻燃的环氧树脂燃烧后能够形成连续、致密、封闭、坚硬的焦化炭层。展开更多
文摘The synthesis, properties and flame retardation of two kinds of flame retardants, mono(1 chloride 2 hydroxy propyl) phosphate and antimony mono(1 chloride 2 hydroxy propyl)phosphate were reported. Mono(1 chloride 2 hydroxy propyl) phosphate was synthesized from epichlorohydrin and phosphoric acid at molar ratio of 1∶1.2 in the solvent of methyl benzene with AlCl 3 catalyst under the conditions of reaction temperature of 90 ℃ and reaction time of 2 h, its total yield is 82.5%. Antimony mono(1 chloride 2 hydroxy propyl)phosphate was synthesized from mono(1 chloride 2 hydroxy propyl)phosphate and antimony trioxide in the solvent of dimethyl sulfoxide with oxalic acid catalyst under the conditions of reaction temperature of 92 ℃ and reaction time of 4 h, the total yield is 85.6%. The physical chemical properties of the products were determined. When adding 15% of mono(1 chloride 2 hydroxy propyl) phosphate and antimony mono(1 chloride 2 hydroxy propyl)phosphate in polyethylene respectively, the oxygen indexes (OI) are 31.4 and 33.7 respectively. [
