Synthesis and characterization of a functional polyhedral oligomeric silsesquioxane and its flame retardancy in epoxy resin
作者： Kun Wu , Lei Song , Yuan Hu , Hongdian Lu , Baljinder K. Kandola
DOI: 10.1016/J.PORGCOAT.2009.04.008
关键词:
摘要: A functional polyhedral oligomeric silsesquioxane (NPOSS) with two epoxy ring groups was synthesized via the reaction between trisilanolisobutyl-POSS and triglycidyl isocyanurate, then a halogen-free composite containing silicon/nitrogen prepared. The results of microscale combustion calorimeter indicate that presence NPOSS (10% weight ratio) in resin (EP) can decrease its peak heat release rate by about 30%. thermal oxidation degradation behaviors EP EP/NPOSS composites were characterized DSC, TG, FTIR-TG dynamic FTIR. Scanning electron microscopy X-ray photoelectron spectroscopy used to explore char residues composites. flame retardant mechanism has been evaluated. retard movement scission polymeric chains form stable charred layer condensed phase prevent underlying materials from further combustion.
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