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The Role of Calcium-Zinc Stabilizers in PVC Products
Apr 30 2026
Calcium-zinc stabilizers are environmentally friendly heat stabilizers, lead-free, cadmium-free, green and non-toxic. They are essential core additives for the production of various PVC products, widely applicable to all PVC products such as rigid, flexible, foamed and transparent ones.
1. Thermal stability to prevent high-temperature decomposition and yellowing
During high-temperature extrusion, injection molding and calendering of PVC, it is prone to thermal decomposition, release of hydrogen chloride, resulting in yellowing, charring, blackening and material clogging. Calcium-zinc stabilizers can effectively inhibit PVC thermal degradation, maintain processing color, ensure stable production without scorching, and greatly reduce the rejection rate.
2. Improve processing fluidity for smoother production
It has excellent internal and external lubrication effects, improves PVC melt fluidity, ensures uniform plasticization, prevents sticking to rollers and molds, increases extrusion and injection speed, saves energy consumption and improves production capacity.
3. Environmental protection and safety, meeting export standards
Free of heavy metals, it passes SGS, RoHS and REACH environmental tests, odorless and pollution-free. It is suitable for home decoration building materials, food packaging, children's products and medical-grade PVC products, easily meeting domestic and foreign environmental export requirements.
4. Enhance product appearance and physical properties
PVC products using calcium-zinc stabilizers have a smooth and flat surface, uniform color, and are not easy to whiten or precipitate. At the same time, they enhance toughness, weather resistance and aging resistance, extend product service life, and are resistant to high and low temperatures, not easy to brittle and deform.
5. Suitable for all types of PVC products
Universal application: PVC pipes and fittings, profiles, rigid wall panels, WPC wood-plastic, flexible hoses, wires and cables, artificial leather, films, shoe soles and shoe materials, transparent products, foamed products, etc. One product is suitable for multiple production lines, and formula debugging is simple.
6. Good compatibility, convenient formula preparation
It has excellent compatibility with lubricants, processing aids, fillers, color masters, etc., no precipitation, no blooming, and does not affect printing, bonding and subsequent processing. It is suitable for high-calcium powder and high-filling formulas, helping factories reduce costs and improve efficiency.
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