Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes

The combustion behavior of a blend made of high impact polystyrene (HIPS) with sodium montmorillonite (MMT-Na+) and triphenyl phosphite (TPP), as a halogen-free flame retardant, is analyzed in detail in this work. The blend is processed through various extrusion methods aimed to improve clay dispers...

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Format: Article
Language:English
Published: Budapest University of Technology 2008-08-01
Series:eXPRESS Polymer Letters
Subjects:
TPP
Online Access:http://www.expresspolymlett.com/letolt.php?file=EPL-0000686&mi=cd
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spelling doaj-e2641819756b45f0a709b4d16dde8e712020-11-24T22:09:08ZengBudapest University of Technology eXPRESS Polymer Letters1788-618X2008-08-012856957810.3144/expresspolymlett.2008.69Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processesThe combustion behavior of a blend made of high impact polystyrene (HIPS) with sodium montmorillonite (MMT-Na+) and triphenyl phosphite (TPP), as a halogen-free flame retardant, is analyzed in detail in this work. The blend is processed through various extrusion methods aimed to improve clay dispersion. The UL94 method in vertical position, oxygen index and cone calorimetric measurements assess HIPS blend behavior in combustion. TGA, FTIR, SEM and X-ray measurements, together with mechanical and rheological tests evaluate the thermal degradation, morphology, intercalation and degree of dispersion of particles. The use of a static-mixing die placed at the extreme of a single screw extruder improves clay platelets distribution and reduces the peak heat release rate better than employing a twin screw extrusion process. In addition, mechanical and rheological properties are affected substantially by changing the extrusion process. A correlation between clay dispersion and HIPS fire retardant properties is found, as the peak heat release rate decreases with good clay dispersion in cone calorimetric tests. http://www.expresspolymlett.com/letolt.php?file=EPL-0000686&mi=cdNanocompositesthermal propertiesrheologyHIPSTPP
collection DOAJ
language English
format Article
sources DOAJ
title Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
spellingShingle Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
eXPRESS Polymer Letters
Nanocomposites
thermal properties
rheology
HIPS
TPP
title_short Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
title_full Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
title_fullStr Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
title_full_unstemmed Study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
title_sort study on the combustion behavior of high impact polystyrene nanocomposites produced by different extrusion processes
publisher Budapest University of Technology
series eXPRESS Polymer Letters
issn 1788-618X
publishDate 2008-08-01
description The combustion behavior of a blend made of high impact polystyrene (HIPS) with sodium montmorillonite (MMT-Na+) and triphenyl phosphite (TPP), as a halogen-free flame retardant, is analyzed in detail in this work. The blend is processed through various extrusion methods aimed to improve clay dispersion. The UL94 method in vertical position, oxygen index and cone calorimetric measurements assess HIPS blend behavior in combustion. TGA, FTIR, SEM and X-ray measurements, together with mechanical and rheological tests evaluate the thermal degradation, morphology, intercalation and degree of dispersion of particles. The use of a static-mixing die placed at the extreme of a single screw extruder improves clay platelets distribution and reduces the peak heat release rate better than employing a twin screw extrusion process. In addition, mechanical and rheological properties are affected substantially by changing the extrusion process. A correlation between clay dispersion and HIPS fire retardant properties is found, as the peak heat release rate decreases with good clay dispersion in cone calorimetric tests.
topic Nanocomposites
thermal properties
rheology
HIPS
TPP
url http://www.expresspolymlett.com/letolt.php?file=EPL-0000686&mi=cd
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