Synergism between Intumescent Flame Retardant and Organo-Montmorillonite in Polypropylene Nanocomposites

Ya Jun Chen; Chao Wang; Chun Zhuang Yang

doi:10.4028/www.scientific.net/AMR.785-786.502

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 785-786Synergism between Intumescent Flame Retardant and...

Synergism between Intumescent Flame Retardant and Organo-Montmorillonite in Polypropylene Nanocomposites

Abstract:

A simple method of melt blending was used to prepare PP, PP/IFR and PP/IFR/OMMT composites. The Flammability and mechanical property of the composites were investigated. Limiting oxygen index (LOI) tests and cone calorimetry results indicate that there are synergisms between IFR and OMMT. Incorporation of OMMT led to a further increase in LOI value of intumescent retarded PP samples when the addition amounts of OMMT are less than 2%. Cone calorimeter measurements demonstrate that the peak heat release rate (PHRR), average mass loss rates (AMLR) and fire growth rate index (FIGRA) of PP/IFR/OMMT composites are all less than that of PP/IFR30 when OMMT contents are less than 1.5% (including 1.5%).Char residues after cone calorimeter tests were investigated. Unlike the expansion char residue of PP/IFR, the char residues of PP/IFR/OMMT display a lower height and compact morphology, which are due to the barrier effect of OMMT. The presence of less than 1.5% OMMT can somewhat enhance the tensile strength and Izod impact strength of PP/IFR/OMMT composites. Larger OMMT amounts decrease the above mechanical properties.

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Periodical:

Advanced Materials Research (Volumes 785-786)

Pages:

502-507

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.785-786.502

Citation:

Cite this paper

Online since:

September 2013

Authors:

Ya Jun Chen, Chao Wang, Chun Zhuang Yang

Keywords:

Flammability, Intumescent Flame Retardant, Mechanical Property, Organo-Montmorillonite, Polypropylene (PP), Synergism

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