In the production of Stone Plastic Composite (SPC) flooring, calcium-zinc stabilizers serve as a crucial eco-friendly additive, primarily enhancing the thermal stability and processability of the material while ensuring its safety. Their key functions include the following aspects:

1. Thermal Stability: The main components of SPC flooring are polyvinyl chloride (PVC) and calcium carbonate. During high-temperature processing, PVC tends to decompose and release hydrogen chloride (HCl), leading to material degradation. Calcium-zinc stabilizers effectively absorb HCl, inhibiting decomposition and ensuring material stability during high-temperature processes such as extrusion and calendaring.

2. Environmental Safety: Traditional lead-based stabilizers are toxic, whereas calcium-zinc stabilizers consist of non-toxic metals such as calcium and zinc. They comply with environmental standards like RoHS and REACH, making them suitable for SPC flooring production where strict environmental regulations apply.

3. Processing Lubrication: Calcium-zinc stabilizers provide a certain degree of lubrication, improving the flowability of PVC mixtures. This ensures more uniform extrusion and molding of SPC flooring, reduces equipment wear, and enhances production efficiency.

4. Long-Term Durability: SPC flooring containing calcium-zinc stabilizers exhibits superior anti-aging properties, minimizing the impact of environmental factors such as UV exposure, humidity, and heat, thereby extending the floor’s service life.

In summary, calcium-zinc stabilizers not only ensure processing stability in SPC flooring production but also enhance the product’s environmental friendliness and durability, making them a key additive in manufacturing high-quality SPC flooring.