Investigation of the effect of dimensionality and percentage of nanosilica on the cure kinetics parameters of Kamal model in epoxy /silica nanocomposites
Paper ID : 1431-ICNS
mehran jahani, mehrzad mortezaei *, amirreza pouladvand
Department of Polymer Engineering, Composite Research Institute, Malek Ashtar University of Technology, Tehran, Iran
Knowing of thermoset curing kinetics is essential for process development, quality control and achieving desirable products. Hence, in this paper, cure kinetics of an EPON 828 epoxy resin / dicyandiamide curing agent / Diuron accelerator system is investigated. This resin system is usually used for production of epoxy/glass fiber prepregs used in wind turbine blades. For this, DSC analysis is used and the effect of temperature, weight percentage and size of nanosilica is studied by conducting isothermal tests at several temperatures for samples with and without nanoparticles. An autocatalytic curing model is applied to describe the cure kinetic of system and then the variations in model parameters calculated by curve fitting using MATLAB software. The results show that the increase in temperature, weight percentage of nanosilica from 0 to 6%, and surface area of nanosilica particles lead to the increase of curing rate. Whereas, the increase in the percentage and surface area of nanosilica particles significantly decreases total heat of reaction.
Epoxy resin, Cure kinetics, Nanosilica, Autocatalytic curing model.
Status : Abstract Accepted (Poster Presentation)