Calculated values of n and K from power law
fits of the measured data are summarised in Table 2.
Values of n at all conditions were calculated to be in the range
between 0.21 and 0.31, and for grades HPC-SSL and HPC-L appeared
to increase with increasing melt temperature. It can be seen that
plots of viscosity versus shear rate at three temperatures were parallel
at the lower range of shear rates but appeared to converge at shear rates above 1000 s−1.