Introduction to Calcined Petroleum Coke in Brake Linings Formulas
Calcined Petroleum Coke (CPC) is a high-carbon material widely utilized in brake linings mixtures, serving as a cost-effective and thermally stable component in Brake Linings Friction Materials. Its integration into Brake Linings Mixes enhances friction performance, thermal resistance, and structural integrity under high-pressure braking conditions. Below is a technical overview of its role, specifications, advantages, and storage guidelines.
Technical Parameters of Calcined Petroleum Coke in Brake Linings Formula
| Property | Specification | Test Method |
|---|---|---|
| Fixed Carbon Content | ≥98% | ASTM D3172 |
| Sulfur Content | ≤0.8% (low-sulfur grade) | ASTM D4239 |
| Particle Size (μm) | 50-200 (adjustable for formulation) | Laser Diffraction |
| Bulk Density (g/cm³) | 0.7-1.0 | ASTM B212 |
| Thermal Conductivity | 10-20 W/m·K | ASTM E1461 |
| Ash Content | ≤0.5% | ASTM D3174 |
| Operating Temperature | -50°C to 500°C | ISO 26865 |
Advantages of Calcined Petroleum Coke in Brake Linings Ingredients
- Thermal Stability:
CPC’s high fixed carbon content (≥98%) ensures exceptional resistance to thermal degradation, maintaining friction stability even at temperatures up to 500°C. - Friction Modulation:
Acts as a friction modifier in brake linings friction materials, balancing wear resistance and noise reduction while delivering consistent braking performance. - Cost Efficiency:
A low-cost alternative to synthetic graphite, CPC reduces production expenses without compromising the quality of brake linings mixtures. - Compatibility with Hybrid Mixes:
Blends seamlessly with resins, steel fibers, and ceramic additives in brake linings mixes, ensuring uniform material distribution and mechanical strength. - Low Environmental Impact:
Low sulfur content (≤0.8%) minimizes harmful emissions during braking, aligning with global regulations for eco-friendly brake linings formula.
Storage and Packaging Guidelines
To preserve the quality of CPC in brake linings ingredients:
- Packaging: Use moisture-proof, sealed polypropylene bags or bulk containers with desiccants to prevent oxidation and moisture absorption.
- Storage Conditions:
- Temperature: <35°C
- Humidity: <50% RH
- Avoid exposure to acidic/alkaline substances and direct sunlight.
- Shelf Life: 18-24 months in unopened, dry packaging.
Typical Applications in Brake Linings Formula
CPC is commonly integrated into brake linings mixtures alongside:
- Binders: Phenolic resins or polyurethane.
- Reinforcements: Aramid fibers, steel wool.
- Abrasives: Silicon carbide, alumina.
This hybrid formulation ensures optimal friction efficiency, thermal management, and compliance with automotive safety standards.
For detailed technical specifications, consult material suppliers or refer to industry standards such as ASTM and ISO.