A study of the effect of plasticizers on compounding, processing, aging and mechanical properties of poly(vinyl chloride).

摘要

The effects of several popular plasticizers, with and without an antioxidant, in poly(vinyl chloride) (PVC) jacket and insulation for wire and cable on PVC compounding, processing, aging and mechanical properties were studied. The plasticizers used were dioctyl phthalate (DOP) and diisodecyl phthalate (DIDP) at a concentration of 45 phr level. Studies showed that the formulation containing DOP increased the plasticization efficiency and elongation at break, and decreased the torque measurement during compounding and processing stages. The low retention of the elongation at break after aging of the formulation containing DOP was improved by the antioxidant. The formulation containing DIDP decreased the volatile loss into air and the cycle time of the compounding stage, and provided excellent retention properties even without the antioxidant. The rheological behavior of the two formulations was similar and provided the same output.