Abstract

The possibilities of using various rheological methods to study the behaviour of polytrifluorochloroethylene in the state of viscous flow are elaborated. PTFCE has been found to change to a state of viscous flow in which it has the properties typical of a melt over a very limited temperature range. The melt viscosity is very high and the MWD of industrial batches is narrow. PTFCE therefore changes to the forced highly elastic state already at low rates of shear and loses its flow properties. The flow possibilities are limited at low temperatures and long deformation by orientational crystallization, and by thermal degradation at high temperatures.

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