Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/772
Title: Influence of manganese acetyl acetonate on the cure-kinetic parameters of cyanate ester-epoxy blend systems in fusion relevant magnets winding packs
Authors: Pradhan, S
Priyanka, B
Sudha, J D
Jisha, U
Keywords: DSC
Resins
Cyanic acid
Polyfunctional glycidylethers
Bisphenol-a dicyanate
Thermosetting resin
Activation energy
Epoxy
Cyanate ester
Nonisothermal
Cure kinetics
Differential scanning calorimetry
Issue Date: 2011
Publisher: Springer
Citation: Journal of Thermal Analysis and Calorimetry 105(1):301-311;Jul 2011
Abstract: Blending cyanate ester (CE) with epoxy resins offers the possibility to manufacture radiation resistant insulations at a low price compared to pure CE materials. Therefore, it is of special interest to study the influence of the CE content and also the effect of catalyst on the curing behavior of these insulation systems. Here, we present the curing behavior of the CE-epoxy blend system studied by non-isothermal differential scanning calorimetry in combination with Fourier infra red (FTIR) spectroscopy. Effect of amount of catalyst, compositional change, heating rate on the conversion, and enthalpy change were studied. The activation energy (E (a)) and pre-exponential factor (A), rate constant of different blend systems with and without catalyst, were computed from the modified Ozawa and Kissinger model equations using isoconversional methods. Studies suggested that cure-kinetic parameters calculated from both the models are found to be matching. It was observed that the activation energy is less in the case of catalyzed system than the uncatalyzed system. Predicting the cure profile of this resin system is important under a given set of conditions for achieving the desired, controlled polymerization. This is the first report on the studies of the cure-kinetic parameters of the CE-epoxy blend system, and these observations will definitely pave the way for tuning the process parameters and temperature profile for achieving the desired properties of these insulation systems in fusion relevant magnetic winding packs.
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/772
ISSN: 1388-6150
Appears in Collections:2011

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