1. What Are Carbon Crystal Panels?

Carbon crystal panels are electrically heated materials commonly used in underfloor heating, wall heating, and similar warming products. Their core consists of carbon fiber or carbon crystal materials, coated with a plastic layer (such as PVC). Since they operate under prolonged heating, the plastic can become brittle or discolored. Therefore, stabilizers are added to protect it.

2. Why Choose Calcium-Zinc Stabilizers?

Previously, lead-based stabilizers were commonly used, but they are toxic. Now, calcium-zinc (Ca/Zn) stabilizers are preferred because they:

• Are eco-friendly and safe: Free from harmful substances like lead and cadmium, complying with international environmental standards.

• Offer excellent heat resistance: Prevent plastic degradation during processing (160-200°C) and use (40-80°C).

• Do not affect conductivity: Carbon crystal panels require electrical heating, and Ca/Zn stabilizers do not interfere with their electrothermal performance.

3. How Do Calcium-Zinc Stabilizers Work?

• Neutralize harmful substances: When heated, plastics release HCl (hydrochloric acid). Ca/Zn stabilizers neutralize it, preventing material breakdown.

• Protect plastic structure: Zinc components replace unstable parts in the plastic, while calcium helps prolong zinc’s effectiveness.

• Prevent discoloration: Adding co-stabilizers (e.g., β-diketones) reduces yellowing.

4. How to Optimize Performance?

• Adjust the ratio: The calcium-to-zinc ratio is critical—typically, calcium should dominate (e.g., 3:1).

• Combine with other additives: Antioxidants or lubricants can enhance durability and processability.

• Control temperature: Excessive processing temperatures can deplete stabilizers prematurely.

5. Future Development Trends

• Higher performance: Developing more heat-resistant Ca/Zn stabilizers for harsher conditions.

• Greener alternatives: Exploring bio-based stabilizers (e.g., derived from plant oils) to reduce reliance on synthetic chemicals.

6. Conclusion

Calcium-zinc stabilizers are safe, eco-friendly, and heat-resistant, making them ideal for carbon crystal panels. With proper formulation and processing, they improve product longevity and safety. As technology advances, their applications will continue to expand.