Combination of montmorillonite and a Schiff-base polyphosphate ester to improve the flame retardancy of ethylene-vinyl acetate copolymer
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Yan Liu
Abstract
Different flame retardant ethylene-vinyl acetate copolymer (EVA) formulations were prepared to evaluate the synergistic effect between organo-montmorillonite (OMMT) and a Schiff-base polyphosphate ester (PAB) on the combustion behavior of EVA. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results revealed that montmorillonite platelets selectively dispersed in the PAB phase. EVA/PAB/OMMT(80/15/5) had better thermal stability and flame retardancy than EVA/PAB(80/20), as indicated by the results of thermogravimetric analysis (TGA), limited oxygen index (LOI), vertical burning test (UL-94) and microscale combustion colorimeter (MCC), showing a synergism between OMMT and PAB. For example, the onset decomposition temperature (T5%) increased from 233°C to 296°C, the char residue at 600°C increased from 6.6% to 11.0%, and the peak heat release rate (PHRR) decreased from 718.1 W/g to 706.6 W/g. This is caused by the silicoaluminophosphate (SAPO) structure formed by reactions between the phosphoric acid generated from PAB and OMMT.
Acknowledgments
This work was financially supported by the National Basic Research Program of China (2010CB631105) and the Doctoral Program Foundation of East China Institute of Technology (DHBK2013210).
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©2015 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original articles
- Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends
- Tensile properties of polyformaldehyde blends and nanocomposites
- Interaction simulation and experimental physico-mechanical analysis of distinct polarity blends of polyethylene and polyvinyl alcohol
- Thermal degradation of high-density polyethylene/soya spent powder blends
- Combination of montmorillonite and a Schiff-base polyphosphate ester to improve the flame retardancy of ethylene-vinyl acetate copolymer
- Effects of initial crystallization process on piezoelectricity of PVDF-HFP films
- Characteristics of natural leather finished with some ecofriendly mixtures of polymeric aqueous dispersions
- Dye wastewater treatment by direct contact membrane distillation using polyvinylidene fluoride hollow fiber membranes
- The effect of pressure variations on the formation of gas inclusions in the rotational molding process
- Numerical study of filling strategies in vacuum assisted resin transfer molding process
- Effect of gas counter pressure on the carbon fiber orientation and the associated electrical conductivities in injection molded polymer composites
Articles in the same Issue
- Frontmatter
- Original articles
- Physico-mechanical characterization and biodegradability behavior of polypropylene/poly(L-lactide) polymer blends
- Tensile properties of polyformaldehyde blends and nanocomposites
- Interaction simulation and experimental physico-mechanical analysis of distinct polarity blends of polyethylene and polyvinyl alcohol
- Thermal degradation of high-density polyethylene/soya spent powder blends
- Combination of montmorillonite and a Schiff-base polyphosphate ester to improve the flame retardancy of ethylene-vinyl acetate copolymer
- Effects of initial crystallization process on piezoelectricity of PVDF-HFP films
- Characteristics of natural leather finished with some ecofriendly mixtures of polymeric aqueous dispersions
- Dye wastewater treatment by direct contact membrane distillation using polyvinylidene fluoride hollow fiber membranes
- The effect of pressure variations on the formation of gas inclusions in the rotational molding process
- Numerical study of filling strategies in vacuum assisted resin transfer molding process
- Effect of gas counter pressure on the carbon fiber orientation and the associated electrical conductivities in injection molded polymer composites
