Basic principles of thermal degradation and thermal stabilization of poly(vinyl chloride). Mathematical model of the action of PVC thermal stabilizers

Abstract

SynopsisA model of the action of chemically homogeneous thermal stabilizers of poly(viny1 chloride) is shown. Based on the described computer program and experimental data, the proposed model is confirmed and rate constants of the reaction of stabilizers with HCI and the effect of the products of this reaction on the kinetics of PVC degradation are calculated.

Principles of Stabilization

“…In a series of papers, [80][81][82][83][84][85][86] Prochaska and Wypych outlined a theory of PVC stabilization and a kinetic model which allows one to calculate (predict) the induction period of PVC degradation for formulations containing single and mixed PVC stabilizers. Computer programs were developed which permit simulation of PVC degradation with use of predetermined constants without a need for further experimentation.…”

“…Computer programs were developed which permit simulation of PVC degradation with use of predetermined constants without a need for further experimentation. [83][84][85] The following information contains a short description of the theory and its applications. [83][84][85] The following information contains a short description of the theory and its applications.…”