Modelling and Prediction of viscosity change in epoxy/silica nanocomposite
Paper ID : 1590-ICNS
Mahdiyeh Esmaeelzadeh1, mehrzad mortezaei *2, amirreza pouladvand2
1polymer engineering Group,Faculty of materials and maniufacturing Technogies, Malek-E-Ashtar unniversityof technology,Tehran, 15875-1774
2Department of Polymer Engineering, Composite Research Institute, Malek Ashtar University of Technology, Tehran, Iran
Knowing of viscosity is essential for process development, quality control, and achieving desirable products. Hence, in this article, Viscosity profile of an EPON 828 epoxy resin/dicyandiamide curing agent/diuron accelerator system whit and without Nano silica particles is investigated. This resin system is usually used for the production of epoxy/glass fiber prepregs used in wind turbine blades. The increase in viscosity is due to the presence of nanoparticles with different mechanisms, which are discussed in this article. Increasing the viscosity in the presence of nanoparticles happens due to the hydrodynamic properties of the nanoparticles, the formation of a interfacial immobilized layer around of nanoparticles, the influence of the presence of nanoparticles on the curing kinetics that directly affect the viscosity, and the increased glass transition temperature due to the presence of nanoparticles. In this paper, the effects of these cases on viscosity were modelled.
Viscosity, Epoxy resin, Nano silica, Interfacial immobilized layer
Status : Abstract Accepted (Poster Presentation)