Chemorheological Model for Neat Unsaturated Polyester

The following form of an empirical expression describing the variation of r] during the cure of thermoset has been suggested (Roller 1975)  

R rinted from Lee and Han, Polymer Engineering and Science 27 955. Copyright 1987, with permission from the Society of Plastics Engineers. 

To analyze experimental data, Lee and Han (1987a) employed a WLF expression to describe the viscosity of unsaturated polyester  

Using Eq. (14.13), we can now predict the viscosity of unsaturated polyester during cure once information on a during cure is available to us. In order to use Eq. (14.13) to describe the variation of r/ during cure of unsaturated polyester, one must have an expression describing the kinetics of the cure reactions. Below, we present experimental methods that can be used to determine an expression for cure kinetics. 

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