By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Minerals. According to news reporting out of Tehran, Iran, by NewsRx editors, the research stated, "A large number of studies showed that nanoparticles used even in small quantities improve thermal stability and flammability resistance by reducing significantly the mass loss and heat release rate. Recently, a graphite nano-crystal and nano-clay have been used as an alternative to traditional fire retardants to improve the thermal stability and flammability resistance of polymeric materials."
Our news journalists obtained a quote from the research from Tarbiat Modares University, "The objectives of this work are the experimental and theoretical evaluation of the pyrolysis and flammability of the polymer nanocomposites based on novolac type phenolic resin and graphite nano-crystal under the external convection and radiation heat flux. The theoretical results of heat release rate modeling based on conservation equations of mass and energy are then confirmed by the experimental data of thermal analysis. Nano-graphite shows good potential as flame retardant because upon pyrolysis of polymer, the nano-crystal graphite reinforced phenolic resin can be converted into a uniform carbon layer, which may lead to significantly higher resistance to oxidation compared to neat phenolic resin."
According to the news editors, the research concluded: "Formation of this carbon layer on char formed from the pyrolysis of the nanocomposite at high temperature not only enhances the char mechanical strength, but also acts as secondary protection layer to protect the lower remained nanocomposite."
For more information on this research see: Pyrolysis and flammability properties of novolac/graphite nanocomposites. Fire Safety Journal, 2013;61():265-273. Fire Safety Journal can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Fire Safety Journal - www.elsevier.com/wps/product/cws_home/405896)
Our news journalists report that additional information may be obtained by contacting A.R. Bahramian, Tarbiat Modares Univ, Fac Chem Engn, Dept. of Polymer Engn, Tehran, Iran (see also Minerals).
Keywords for this news article include: Iran, Asia, Tehran, Carbon, Graphite, Minerals, Nanocomposite, Nanotechnology, Emerging Technologies
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