What Are the Typical Applications of CaZn Stabilizers in PVC Production?
Calcium-Zinc (CaZn) stabilizers have become one of the most important eco-friendly additives in modern PVC production. As industries worldwide move away from lead-based stabilizers due to environmental and regulatory pressures, CaZn systems are now widely adopted across rigid and flexible PVC applications. Their unique balance of thermal stability, weather resistance, and non-toxic characteristics makes them a preferred choice for sustainable PVC manufacturing. Understanding the Role of CaZn Stabilizers CaZn stabilizers are synergistic blends of calcium and zinc compounds combined with lubricants and antioxidants. Their primary function is to prevent PVC degradation during processing and end use. PVC, when exposed to high temperature or shear during extrusion, tends to release hydrogen chloride (HCl), leading to discoloration, brittleness, and loss of mechanical strength. CaZn stabilizers effectively neutralize this HCl and stabilize the polymer chain, ensuring color retention, ...