Calcium-zinc stabilizers primarily appear as white powder, flakes, or paste. Powdered calcium-zinc stabilizers are the most widely used non-toxic PVC stabilizers, commonly applied in food packaging, medical devices, wire and cable materials, among others. Currently, domestically produced PVC calcium-zinc stabilizers suitable for rigid pipes have emerged.

The thermal stability of powdered calcium-zinc stabilizers is inferior to that of lead salts. They possess inherent lubricity, poor transparency, and are prone to blooming. To enhance their stability and transparency, antioxidants such as hindered phenols, polyols, phosphites, and β-diketones are often added for improvement.

The two major systems of calcium-zinc stabilizers are primarily divided into hydrotalcite systems and zeolite systems.

The prices of powdered calcium-zinc stabilizers vary widely, with no standardized national regulations to govern them.

Applications:

PVC soft pellets: PVC transparent eco-friendly pellets, medical-grade catheter pellets, PVC virgin material modified pellets, custom-made based on samples

U-PVC rigid pellets: extrusion profile pellets, injection molding pipe fitting pellets, blow molding transparent pellets

PVC recycled materials: PVC soft recycled materials, PVC rigid injection molding recycled pellets (black, gray, blue)