含PEPA/纳米Al(OH)3的膨胀型阻燃聚丙烯研究

用磷酰基季戊四醇（PEPA）替代传统的季戊四醇作为炭源，与APP、三聚氰胺复合组成膨胀型阻燃剂（IFR），制备了膨胀型阻燃聚丙烯（IFR-PP）。讨论了阻燃剂对IFR-PP的阻燃性能、力学性能、热稳定性的影响，以反纳米Al（OH）3对该阻燃体系的影响。结果表明：PEPA在阻燃效果上优于季戊四醇，且PEPA对IFR-PP力学性能的影响小于季戊四醇，当PEPR用量为5份，纳米Al（OH）3用量为15份时，阻燃级别达UL-94 V-0级。同时，纳米Al（OH）3的添加使IFR-PP体系阻燃效果得到提高，且对材料的热稳定性反力学性能影响较小。

Study on PEPA/Nano-Al(OH)3 Intumescent Flame Retardant Polypropylene

PEPA replaced pentaerythritol (PER) as a carbonization agent with APP and melamine composed intumescent flame retardant (IFR), and prepared intumescent flame retardant PP (IFR-PP). The effects of IFR on the flame retardancy and thermostability were discussed, and the synergistic effect of nano-Al(OH)3 was also studied. The result shows that PEPA was better than PER as the carbonization agent, the rate of UL-94 V-0 couldbe achieved when the PEPA was at 5 phr and nano-Al(OH)3 was at 15 phr. Compared to the PER, PEPA haslittle effect on the mechanical properties of IFR-PP. The added nano-Al(OH)3 could improve the flame retardant of the system and has little effect on the thermal stability and mechanical properties of the system.