层状纳米填料蒙脱土(MMT)与聚磷酸铵(APP)/双季戊四醇(DPER)结合膨胀阻燃聚丙烯(PP),提高了PP/APP/DPER膨胀阻燃材料的阻燃性能.采用热失重分析(TG)研究了MMT对APP/PER及APP阻燃剂体系热降解行为的影响;采用X射线光电子能谱(XPS)研究了MMT与APP之间热降解过程中的成炭化学作用.结果表明,添加MMT后,APP/DPER、APP在800℃的残余量分别提高12.3％和14.5％,其贡献以MMT与APP间的相互作用为主;MMT与APP发生成炭化学反应,生成Si-O-P键,增加了APP高温分解稳定性.
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