Automated control system to monitor dielectric losses in polymers

The basic property of the processed polymers when it comes to high-frequency heat treatment is their dielectric losses. The purpose of the present study is elaboration of automated control system to monitor dielectric losses in polymers during heating. The technique developed in the given paper implies linear uniform heating of the studied material by contact method with the given velocity and when heating is off, periodic short-term action of high-frequency electric field on the polymer after each temperature growth of polymer per preset degree. The studies conducted in the automatic mode allowed obtaining new knowledge on changing electro-physical properties of polymers during heat treatment; and determining the new parameter to control polymer state while high-frequency processing; distinguishing and identifying different relaxation transitions of polymer materials during heating and thus broadening applicability of high-frequency heat treatment.