Thermal decomposition and flame retardant behaviour of SiO 2-phenolic nanocomposite
Autor: | C.T. Vijayakumar, M. Balasubramanian, T. Periadurai |
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Jazyk: | angličtina |
Rok vydání: | 2010 |
Předmět: |
Materials science
Chemical linkage Decomposition temperature Decomposition products Novolac resin Analytical Chemistry Limiting oxygen index Phenolic resins Nanocomposites Phenols SiO2 Polymer chemistry Silicon compounds Char Synthetic resins Limiting Oxygen Index Flame retardant properties Gas chromatography Nanocomposite Mass spectrometry Thermal decomposition Thermal decompositions In-situ Intermediate temperatures Nano- SiO Thermogravimetric analysis FTIR analysis Decomposition Thermogravimetry Oxygen Fuel Technology Flame-retardance Chemical engineering Organic components Gas chromatography-mass spectrometry Fire fighting equipment Pyrolysis Plastics Fire retardant |
Zdroj: | IndraStra Global. |
ISSN: | 2381-3652 |
Popis: | The present investigation describes the preparation of nano-SiO 2-phenolic novolac resin nanocomposite through in situ polymerisation. CP MAS 13C NMR and FTIR analyses indicate the formation of chemical linkage between the inorganic and organic components. The decomposition temperature of the nanocomposite is ?70 �C higher than the neat phenolic resin. The char content of the nanocomposite at any intermediate temperature is higher than that of neat resin. The limiting oxygen index value of the neat resin is 38 whereas it is 43 for the nanocomposite. So, the nanocomposite possesses excellent flame retardant property. Both the nanocomposite and the neat resin were isothermally pyrolysed and the products were separated and identified using GC-MS. The decomposition product analysis shows a difference in the decomposition product distribution. This variation is discussed in the light of the proposed structure for the SiO2- phenolic nanocomposite. � 2010 Elsevier B.V. All rights reserved. |
Databáze: | OpenAIRE |
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