无卤阻燃聚丙烯的制备

Preparation of Halogen-free Flame Retarded Polypropylene

采用多聚磷酸铵(APP)、季戊四醇(PER)、三聚氰胺尿酸盐(MCA)作为无卤阻燃剂,调整三者比例,采用熔融共混挤出法制备了无卤阻燃聚丙烯复合材料,并研究了蒙脱土、相容剂马来酸酐接枝聚丙烯(PP-g-MAH)以及矿物、玻纤的加入对复合材料性能的影响。结果表明,在纯PP体系中,阻燃剂添加到30份时,复合材料阻燃级别可以达到UL 94V-0级(3.2mm),滑石粉和玻纤的加入使得复合材料的阻燃性能下降,而PP-g-MAH和蒙脱土的加入使得复合材料的阻燃性能提高。

In this paper, APP, PER, and MCA were selected as a halogen-free flame retardant for PP. It was found that the composites reached UL 94 V-0 （3.2 ram） with 30 phr flame retardant. The effects of MMT, PP-g-MAH, talc, and glass fiber on the flame retardancy of the composites were also studied. The flame retardancy decreased with the introduction of talc or glass fiber, and increased with the introduction of PP-g-MAH or MMT.