Lead stabilizers are lead-based additives often used in PVC Processing. They are added to PVC to slow undesirable reactions and improve its lifespan.
Lead stabilizers are lead-based additives often used in PVC Processing. They are added to PVC to slow undesirable reactions and improve its lifespan.
Unlike internal lubricants that enhance the polymer melt’s flow properties, external lubricants tend to migrate to the PVC’s surface, forming a lubricating layer between the melt and the processing equipment.
Internal and External Lubricants are two types of lubricants used in PVC applications. They serve the process of reducing friction. However, both of these category of lubricants act differently and have distinct functions. There are certain lubricants such as Stearic Acid that act as both external and internal lubricants.
Oleochemical derivatives, Ester, and N- Butyl stearate are examples of internal lubricants used for PVC processing.
Unlike internal lubricants that enhance the polymer melt’s flow properties, external lubricants tend to migrate to the PVC’s surface, forming a lubricating layer between the melt and the processing equipment.
Internal Lubricants improve the flow characteristics of the PVC melt during processing and External Lubricants reduce the friction between the PVC melt and the metal surfaces of the processing equipment.
Lead-based Stabilizers are used in PVC processing, so Lead is present in minute quantities. However, with growing concerns around the side effects of lead, there are Lead-Free Stabilizers available that can be used in formulating PVC compounds.
In PVC manufacturing, stabilizers are used to improve thermal stability, prevent deterioration, and retain the desirable physical and mechanical attributes of PVC products.
Following are the most commonly used PVC stabilizers additives: Calcium Stearate Zinc Stearate Lead Stearate Hindered Amine Light Stabilizers (HALS) Tribasic Lead Sulfate Methyl Tin Stabilizers
Based on the chemical composition, performance characteristics, and environmental considerations, following are the types of PVC stabilizers. Organotin Stabilizers: Calcium-Zinc Stabilizers: Lead Stabilizers: Barium-Cadmium Stabilizers: Tin Stabilizers: Organic Stabilizers: