改性PP三元共混体阻燃性能的研究

研究了含卤阻燃剂，十溴联苯醚（ＤＢＤＰＯ）；氯化聚乙烯（ＣＰＥ）和三氧化二锑（Ｓｂ２Ｏ３）及氢氧化铝对改性聚丙烯（ＰＰ）－聚丙烯／高密度聚乙烯／乙丙橡胶（ＰＰ／ＨＤＰＥ／ＥＰＲ）三元共混体阻燃性能的影响，分析了阻燃剂间的协同作用，讨论了阻燃机理，结果表明：（１）Ｓｂ２Ｏ３与ＤＢＤＰＯ、ＣＰＥ并用能改性ＰＰ三元共混体的阻燃性能提高，当含卤阻燃剂用量是Ｓｂ２Ｏ３的四倍左右时阻燃效果最好，阻燃性能提高一

A Study of the flame Retardance of Modified PP/HDPE/EPR Blend

The effects of different halogen-containing flame retardants, such as decabromo-diphenyl oxide (DBDPO), chlorinated polyethylene (CPE) , antimony trioxide (Sb2O3) and aluminium hydroxide on the flame retardance of the modified PP, the PP/ HDPE/EPR blend, are studied. The synergistic combination and mechanism of the flame retardation are discussed. The results show that (1) the use of Sb2O3 with DBDPO and CPE could improve the flame retardance of the blends. When the content of the flame retardant containing chlonine and bromine is four times that of Sb2O3, the flame retardance is the best, and increases by a factor of two, and the blend is self-extinguishabl. (2) The synergistic combination of Sb2O3and DBDPO would be most effective when the Br/Sb molar ratio is 3: 1. (3) The increase of the contents of ATH improves the flame retardance of the blends when ATH is used with DBDPO.