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Self-Extinguishing Polymer Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Mayu Si ,
Hsinchou Chu ,
Daniel Hefter ,
Aryeh Sokolov ,
Jonathan Hefter ,
Michael Smith ,
Jonathan Sokolov  and
Miriam Rafailovich
Mayu Si
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
Hsinchou Chu
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
Daniel Hefter
Affiliation:
DRS High School, Woodmere, NY 11598
Aryeh Sokolov
Affiliation:
HAFTR High School, Cedarhurst, NY 11516
Jonathan Hefter
Affiliation:
University of Pennsylvania, Philadelphia, PA 19104
Michael Smith
Affiliation:
Fire Science Division, NIST, Gaithersburg, MD 20899
Jonathan Sokolov
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
Miriam Rafailovich
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
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Abstract

Self-extinguishing PMMA/Clay nanocomposites with conventional flame retardant agents, decabromodiphenyl oxide (DB) and antimony trioxide (AO) have been prepared by melt blending using Brabender. The combustion behavior was first investigated by subjecting slabs of the polymer to UL-94 V0 testing. We found that the polymers with only the retardant agents or the clay could not pass. On the other hand all polymers with both components were self-extinguishing. DMA results show that the introduction of 5 wt% clay improves PMMA bending modulus by 28 % and increases Tg by 8 °C. the addition of clay can effectively avoid dripping during burning test. Based on the cone calorimeter data, the general mechanism is proposed that the synergy between the char formation promoted by the clay in condense phase and free radical capture in gas phase due to the DB and AO makes the material become self-extinguishing.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE13.52
Copyright
Copyright © Materials Research Society 2005

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References

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