Improving the Performance of Intumescent Flame Retarded Polypropylene with Nano-ZrO2
Melamine polyphosphate (MPP) and pentaerythritol(PTL) were used as intumescent flame retardants to improve the flame retardance of polypropylene(PP). As a synergistic agent, nano-ZrO2 was incorporated into the composites at different proportions. The synergistic effects of nano-ZrO2 were studied by cone calorimeter tests and thermal gravimetric analysis (TGA). Based on scanning electron microscopy (SEM) and Fourier transform infrared spectra (FTIR), it was evident that nano-ZrO2 efficiently promoted the formation of charred layers with phosphocarbonaceous structures and enhanced the flame retardance of the composites.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
X. L. Wang and L. H. Wu, "Improving the Performance of Intumescent Flame Retarded Polypropylene with Nano-ZrO2", Advanced Materials Research, Vols. 150-151, pp. 32-35, 2011