L. Wang, L. Song, Y. Hu and R. K. K. Yuen (2013) Influence of Different Metal Oxides on the Thermal, Combustion Properties and Smoke Suppression in Ethylene-Vinyl Acetate. Journal/Industrial &, Engineering Chemistry Research 52 8062-8069. [In English]
Web link: http://dx.doi.org/10.1021/ie400586t
Keywords: POLY(VINYL CHLORIDE), DECOMPOSITION, NANOPARTICLES, FLAMMABILITY, COMPOSITES, ADDITIVES, EMISSION, EVA
Abstract: The composites based on ethylene-vinyl acetate copolymer (EVA) and beta-FeOOH, MoO3, or Sb2O3 were prepared through a melt blending process. Apart from MoO3, the nanoparticles homogeneously disperse in the EVA matrix. In thermogravimetric analysis (TGA), EVA/5%MoO3 and EVA/5%Sb2O3 exhibit an enhanced thermal behavior at initial temperatures. However, beta-FeOOH only can improve the thermal behavior of EVA at high temperatures. The glass transition temperature (T-g) and the storage modulus are all raised with the addition of beta-FeOOH, MoO3, or Sb2O3. According to a cone calorimeter (CONE), the addition of these oxides brings an efficient reduction of the flammability parameters, such as peak heat release rate (PHRR), total heat release (THR), peak smoke production rate (PSPR), total smoke production (TSP), peak carbon monoxide production rate (PCOR), and so on. Laser Raman spectroscopy (LRS) and thermogravimetric analysis-Fourier transform infrared spectrometry (TGA-FTIR) reveal the cause of the retarding combustion and smoke suppression of beta-FeOOH, MoO3, or Sb2O3 in EVA matrix.