(Effect of Sb3+Y Zeolite with calcium/zinc stearates on the stabilization of poly(vinyl chloride

The stabilization effect of calcium and zinc stearates (CaSt2/ZnSt2) combined with Sb3+Y zeolite on poly(vinyl chloride) is investigated. The results show that the addition of calcium/zinc stearates combined with Sb3+Y can improve thermal and colour stability of poly(vinyl chloride) in both static and dynamic tests. Mechanisms for improving stability of PVC are also discussed. The increase of stabilizing effectiveness of calcium/zinc stearates is ascribed to the synergistic effect between CaSt2/ZnSt2 and Sb3+Y zeolite.