Introduction to Calcium Carbonate Heavy in Brake Shoes Formulas
Calcium Carbonate Heavy (CaCO₃), a widely used inorganic filler, plays a critical role in brake shoes formulas due to its cost-effectiveness, thermal stability, and ability to enhance the structural integrity of Brake Shoes Friction Materials. This mineral is a key component in Brake Shoes Mixes, contributing to optimized friction performance and durability.
Technical Parameters
Below are key technical parameters of Calcium Carbonate Heavy in brake shoe formulations:
| Parameter | Value/Range |
|---|---|
| Particle Size | 5–20 µm |
| Density | 2.7–2.9 g/cm³ |
| Moisture Content | ≤0.5% |
| Loss on Ignition (LOI) | 43–44% (at 900°C) |
| pH Value | 8–9 |
| Thermal Stability | Stable up to 825°C |
Advantages in Brake Shoes Formulas
- Cost-Effective Filler: Reduces production costs while maintaining mechanical strength in Brake Shoes Mixture.
- Friction Modifier: Enhances the consistency of friction coefficients by balancing abrasive and adhesive properties in brake shoes friction materials .
- Thermal Stability: Withstands high temperatures during braking, minimizing thermal degradation and brake fade.
- Eco-Friendly: Non-toxic and recyclable, aligning with green manufacturing trends for Brake Shoes Ingredients.
- Improved Processability: Facilitates uniform mixing in brake shoes mixes due to its fine particle size and flowability.
Storage and Packaging
Proper storage ensures the quality and performance of Calcium Carbonate Heavy in Brake Shoes Formula:
- Storage:
- Store in a dry, ventilated environment (humidity <60%) to prevent moisture absorption.
- Avoid direct sunlight and temperatures exceeding 40°C.
- Packaging:
- Typically packaged in 25 kg or 50 kg moisture-resistant polypropylene bags.
- Bulk shipments use sealed containers with desiccants to maintain low moisture levels.
Application in Brake Shoes
In brake shoes mixes, Calcium Carbonate Heavy acts as a functional filler that balances the formulation’s density and hardness. It synergizes with other brake shoes ingredients (e.g., resins, fibers, and abrasives) to achieve:
- Reduced wear rates.
- Consistent friction performance across varying temperatures.
- Lower noise generation during braking.
Conclusion
Calcium Carbonate Heavy is an indispensable component in modern brake shoes formulas, offering a blend of affordability, thermal resilience, and environmental compatibility. By optimizing its technical parameters and adhering to proper storage protocols, manufacturers can produce high-performance brake systems that meet both safety and sustainability standards.