LAYERED DOUBLE HYDROXIDE-CARBON NANOTUBE HYBRID AS HIGHLY EFFICIENT FLAME RETARDANT NANOFILLER FOR POLYPROPYLENE

摘要

Layered double hydroxide (LDH) lamellae has been successfully enwrapped the surface of carbon nanotubes (CNTs), the obtained LDH-CNT hybrids expected to lead a much better flame retardancy to polypropylene (PP).The characterization data indicated that LDH-CNT hybrids were evenly dispersed within the PP matrix due to the excellent compatibility between PP and LDH compared to PP/CNT.Thermal gravimetric analysis (TGA) demonstrated that adding LDH-CNT could enhance the thermal stability of PP.For the improvement of the fire resistance of PP, only a small amount of CNT (0.5 wt％) led to a higher reduction in the peak heat release rate (PHRR) compared with PP/LDH nanocomposites.