Introduction to Calcium Carbonate Heavy in Brake Pads Formula
Calcium Carbonate Heavy (CaCO₃), a naturally derived mineral filler, is widely utilized in brake pads formulas for its cost-effectiveness, thermal stability, and role in optimizing Brake Pads Friction Materials. This article details its technical specifications, advantages, and storage guidelines in Brake Pads Mixes, emphasizing its critical contributions to friction performance and sustainability.
Technical Parameters of Calcium Carbonate Heavy in Brake Pads Mixture
The table below summarizes key technical properties of Calcium Carbonate Heavy in Brake Pads Ingredients:
| Parameter | Value | Test Standard |
|---|---|---|
| Particle Size (D50) | 2–5 μm (ultra-fine grade) | ISO 13320 |
| Density | 2.7–2.9 g/cm³ | ASTM D792 |
| Decomposition Temperature | ~825°C (releases CO₂) | ISO 11358 |
| Moisture Content | ≤0.5% (post-drying) | ASTM D2216 |
| pH Value | 8.5–9.5 | ISO 787-9 |
| Content in Formula | 10%–25% by weight | Internal QC Protocols |
Advantages of Calcium Carbonate Heavy in Brake Pads Formula
- Cost-Effective Friction Modifier: Enhances the brake pads mixture by stabilizing friction coefficients (μ = 0.35–0.45) while reducing reliance on expensive additives.
- Thermal Stability: Withstands temperatures up to 400°C, preventing brake fade and maintaining structural integrity in brake pads friction materials.
- Noise Reduction: Acts as a vibration dampener, minimizing brake squeal through its fine particle distribution.
- Eco-Friendly: Non-toxic and asbestos-free, aligning with global environmental regulations.
- Enhanced Wear Resistance: Improves the durability of brake pads mixes by reducing abrasive wear on rotors.
Storage and Packaging Guidelines
To ensure the quality of brake pads mixes containing Calcium Carbonate Heavy:
- Packaging: Use moisture-resistant double-layer polyethylene bags with inner liners, sealed in woven sacks (25 kg/bag).
- Storage Conditions:
- Temperature: 5°C–35°C (avoid thermal fluctuations).
- Humidity: <60% RH.
- Protect from UV exposure and acidic contaminants.
- Shelf Life: 18–24 months in unopened, dry packaging.
Key Applications in Brake Pads Ingredients
Calcium Carbonate Heavy is commonly integrated into brake pads formula alongside:
- Reinforcement Materials: Aramid fibers, steel fibers.
- Binders: Phenolic resins or rubber matrices.
- Functional Additives: Graphite, barium sulfate.
This combination ensures balanced friction, reduced noise, and compliance with automotive standards like SAE J661.
Conclusion
Calcium Carbonate Heavy is a cornerstone of modern brake pads friction materials, offering a sustainable, high-performance solution for automotive braking systems. Its versatility in brake pads mixtures, combined with cost efficiency and environmental benefits, solidifies its role in advancing brake technology.
Note: For ultra-fine grades of Calcium Carbonate Heavy, refer to specialized grinding protocols to achieve optimal particle size distribution.