Heat Stabilizers and Lubricants
PVC is inherently unstable when exposed to heat and light, which can lead to degradation and loss of physical properties. To overcome this problem, PVC heat stabilizers are used as additives to improve their stability and durability. The benefits of using PVC heat stabilizers include improved heat and light stability, reduced yellowing and discoloration, and enhanced mechanical and physical properties.
There are different types of PVC heat stabilizers, including inorganic compounds, organic compounds, and both mixtures. Inorganic heat stabilizers include lead, calcium, and zinc salts, while organic heat stabilizers include antioxidants, UV absorbers, and hindered amine light stabilizers (HALS).
PVC heat stabilizers are essential additives for improving the stability and durability of PVC products. They work by neutralizing acidic substances formed during the PVC degradation process, enhancing mechanical and physical properties, and increasing product lifespan.