Abstract
The rheological behavior of spinning solutions of ultrahigh-molecular-weight polyethylene was investigated in stationary and dynamic conditions of shear flow. It was shown that at the shear rates characteristic of real spinning conditions, the elastic reaction of the solution is much higher than the viscous reaction. In conditions of constant shear stress that ensure non-Newtonian flow of the solution, the uniform decrease in the viscosity is replaced by an increase in time due to gradual formation of a cross-linked layer adjacent to the rotating disk of the working unit of the rheometer.
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