Stabilizers are additives crucial for preventing PVC
degradation caused by heat and light exposure. They
typically contain metal elements like barium, cadmium,
or tin that react with released hydrochloric acid to
inhibit further degradation. Stabilizers are essential
in PVC formulations for maintaining product integrity
and extending its lifespan in various applications.
Types of Stabilizers
1. Lead Stabilizers:
Effective for applications requiring long-term heat
stability, like cables and pipes. They are
cost-effective but can pose toxicity concerns.
2. Tin Stabilizers:
Known for excellent clarity in transparent products
like tubing and medical devices. They are versatile
but can cause sulfide staining when used with lead
stabilizers.
3. Calcium Zinc Stabilizers:
Non-toxic and used in various applications where
clarity and stability are essential, such as profiles
and fittings. They offer good weatherability and are
environmentally friendly.
4. Mixed Metal Stabilizers:
These include other stabilizer used for specific
application to provide the effective results with
premium quality.
