Introduction to Calcined Petroleum Coke in Brake Linings Formulas
Calcined Petroleum Coke (CPC) is a high-carbon additive widely used in brake linings mixtures, serving as a cost-effective and thermally stable component in Brake Linings Friction Materials. Its unique structure and chemical properties enhance friction performance, durability, and heat dissipation in Brake Linings Mixes. Below is a detailed technical overview, including specifications, advantages, and storage guidelines.
Technical Parameters of Calcined Petroleum Coke in Brake Linings Formula
| Property | Specification | Test Method |
|---|---|---|
| Carbon Content | ≥98% | ASTM D3176 |
| Sulfur Content | ≤0.5% | ASTM D4239 |
| Particle Size (μm) | 50-300 (adjustable for formulation) | Laser Diffraction |
| Bulk Density (g/cm³) | 0.7-1.0 | ASTM B212 |
| Ash Content | ≤0.8% | ISO 8005 |
| Volatile Matter | ≤0.5% | ASTM D3175 |
| Operating Temperature | Up to 600°C | ISO 26865 |
Advantages of Calcined Petroleum Coke in Brake Linings Formula
- High Thermal Stability:
CPC undergoes calcination at 1350°C, ensuring exceptional resistance to thermal degradation during braking. This prevents brake fade and maintains consistent friction coefficients in brake linings friction materials. - Optimized Friction Performance:
Its porous structure and high carbon content enhance energy absorption, reducing noise and vibration in brake linings mixes. - Cost-Effectiveness:
As a byproduct of petroleum refining, CPC offers a low-cost alternative to synthetic graphite while maintaining comparable performance in Brake Linings Ingredients. - Compatibility with Other Components:
Blends seamlessly with binders (e.g., phenolic resins), fibers (aramid, steel), and abrasives (alumina) in brake linings formula, ensuring homogeneous mixtures and structural integrity.
Storage and Packaging Guidelines
To preserve the quality of calcined petroleum coke in brake linings mixtures:
- Packaging: Moisture-resistant sealed bags or bulk containers with polyethylene liners to prevent oxidation and contamination.
- Storage Conditions:
- Temperature: Below 35°C
- Humidity: <65% RH
- Avoid exposure to open flames, acids, or alkalis.
- Shelf Life: 12-24 months in unopened, dry environments.
Key Applications in Brake Linings Ingredients
CPC is typically combined with:
- Binders: Phenolic resins, rubber.
- Reinforcements: Steel fibers, ceramic fibers.
- Abrasives: Silicon carbide, zirconia.
This combination ensures a balanced brake linings formula that meets OEM standards for high-temperature performance, wear resistance, and environmental compliance.
For detailed specifications, consult material safety datasheets (MSDS) or suppliers specializing in high-quality CPC.