Modelling the chemorheology of an epoxy resin system exhibiting complex curing behaviour

Modified Williams-Landel-Ferry (WLF) equations were developed to calculate the chemoviscosity of an epoxy resin system exhibiting a complex curing reaction. The complex curing reaction of this resin was first resolved into three independent nth order reactions. The modified WLF equation can then be used to describe the chemoviscosity as a function of temperature and structural changes by allowing its parameters to vary with the changing structure of the curing resin. The structural dependence of the chemoviscosity is incorporated in the parameters of the modified WLF equation.