多聚磷酸铵的改性及其对聚丙烯的阻燃作用  

MODIFICATION OF AMMONIUM POLYPHOSPHATE AND ITS FLAMERETARDATION ON POLYPROPYLENE

作　　者：廖凯荣[1] 卢泽俭[1] 王坚[1] 刘军[1] 

机构地区：[1]中山大学高分子研究所

出　　处：《高分子材料科学与工程》1998年第4期87-89,92,共4页Polymer Materials Science & Engineering

基　　金：广东省自然科学基金

摘　　要：通过热处理多聚磷酸铵与三聚氰胺的混合物，获得热稳定性较高（起始失重温度达２５０℃以上）和吸湿性较低的膨胀型阻燃剂ＭＰＰＡ．红外光谱和其它有关数据分析表明，ＭＰＰＡ是多聚磷酸的铵和三聚氰胺盐与三聚氰胺的混合物．燃烧试验表明，ＭＰＰＡ与季戊四醇复配后对聚丙烯的阻燃作用显著增强，这是因为季戊四醇的加入有助于阻燃聚丙烯在受热燃烧时形成膨胀炭的结果。An intumescent flame retardant MPPA based on ammonium polyphosphate(APP)was prepared by heat treatment of APP with melamine. It has higher thermostability (with higher than 250 ℃ of starting mass loss temperature) and lower moisture absorption. The results of infrared spectral analysis and other relevant data indicate that the MPPA is a mixture of ammonium and melamine salts of polyphosphoric acid and melamine. Burning testings show that the flame retardation on polypropylene is greatly increased as MPPA formulated with an appropriate amount of pentaerythritol, and this may be attributed to the charring of pentaerythritol as the flame retardant materials undergo heating and burning.

关 键 词：多聚磷酸胺 聚丙烯 阻燃作用 改性 阻燃剂 

分 类 号：O632.1[理学—高分子化学] TQ325.14[理学—化学]