C60 reduces the flammability of polypropylene nanocomposites by in situ forming gelled-ball network

Song, Pingan and Zhu, Yan and Tong, Lifang and Fang, Zhengping (2008) C60 reduces the flammability of polypropylene nanocomposites by in situ forming gelled-ball network. Nanotechnology, 19 (22). ISSN 0957-4484

Abstract

The thermal and flame retardancy properties of polypropylene/fullerene (PP/C60) nanocomposites were investigated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and cone calorimetry with the C60 loading varied from 0.5 to 2% by weight. Dispersion of C60 in the PP matrix was characterized by transmission electron microscopy (TEM) and optical microscopy (OM). TGA and DSC results showed that the presence of C60 could remarkably enhance the thermal property and cone calorimeter measurements suggested that C60 could to some extent reduce the flammability of PP, with a significant reduction in peak heat release rate and a much longer time to ignition. Furthermore, the larger the loading level of C60, the better the flame retardancy property of PP/C60 nanocomposites. The flame retardation mechanism and corresponding model were proposed with the help of rheological measurements, TEM and x-ray diffraction. C60 reduced the flammability of PP by trapping free radicals in the gas phase and in situ forming a gelled-ball crosslink network to improve the flame retardancy of PP in the condensed phase. Finally, this suggested mechanism was supported by the results of advanced rheological extended systems (ARES), gel content, infrared spectrum, OM, and atomic force microscopy (AFM) measurements.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 08 Aug 2019 04:07
Last Modified: 09 Aug 2019 05:17
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified
Identification Number or DOI: 10.1088/0957-4484/19/22/225707
URI: http://eprints.usq.edu.au/id/eprint/35610

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