Chemorheology of cyanate ester—organically layered silicate nanocomposites
作者： Sabyasachi Ganguli , Derrick Dean , Kelvin Jordan , Gary Price , Richard Vaia
DOI: 10.1016/J.POLYMER.2003.08.031
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摘要: Abstract The effect of nanoparticle addition on the flow and curing behavior a phenolic triazine cyanate ester resin system has been studied using chemorheological, thermal spectroscopic techniques. While neat exhibited Newtonian flow, nanodispersed prepolymer pseudoplastic behavior, typical polymeric fluids such as gels pastes. Evolution morphology during found to be dependent rate intergallery diffusion subsequent gelation vitrification, well intra extragallery cure kinetics. Curing reactions nanocomposite consisting di-functional phenol, halogen organically layered silicates were studied. Gel times measured function temperature by time sweeps controlled stress rheometer. Gelation vitrification activation energies for systems lower than that resins, indicating catalytic clays reaction. kinetics experiments performed DSC FTIR confirmed this phenomenon. Based above experiments, time–temperature-transformation diagrams different constructed.
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