Chemoviscosity profiles

Chemoviscosity profiles may also be correlated to chemical rate parameters. Simultaneous acquisition of the NIR spectrum and low-shear dynamic rheology may also be undertaken from prior to gelation to beyond vitrification for various epoxy-resin systems for selected isothermal profiles to provide network information from rheological power-law indices, fractal dimensions and network rheological structure parameters. 

Overall these fundamental chemorheological tests will provide essential characterization of the typically complex reactive systems under investigation. As mentioned previously, to achieve full characterization we are next interested in chemoviscosity profiles. 

First-order isothermal (Kamal and Sourour, 1973) and non-isothermal (Dusi et al, 1982, 1983) chemoviscosity profiles were presented for epoxy-resin systems in the forms ... 

Of course, in RTM process modelling one must combine the above kinetic and chemoviscosity models into mass, momentum and energy balances within a flow simulation. Specifically, the momentum balance must combine any flows induced by pressure and any flows into porous media (as characterized by Darcy s law). Simple onedimensional RTM flow modelling and two- and three-dimensional RTM simulations have been summarized by Rudd et al. (1997) and show the importance of kinetic, rheological and permeability coefficients to the simulation of pressure-profile and flow-front predictions. 

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