Introduction to Truck Brake Linings Metallic-Free Mixture
Truck brake linings metallic-free mixtures are innovative brake linings friction materials designed to replace traditional metallic components with eco-friendly, high-performance alternatives. Utilizing advanced composites such as ceramic fibers, aramid fibers, and organic resins, this brake linings formula prioritizes environmental sustainability while maintaining exceptional braking efficiency and durability. Below is a detailed analysis of its composition, technical specifications, advantages, and storage guidelines.
Technical Parameters
The table below outlines key properties of a typical metallic-free brake linings mixture:
| Parameter | Specification | Remarks |
|---|---|---|
| Ceramic Content | 40-60% (Silica, Alumina, Zirconia) | Enhances thermal stability |
| Density | 2.2-2.8 g/cm³ | Lightweight design reduces rotor wear |
| Friction Coefficient (μ) | 0.30-0.40 (Dry) | Consistent across wet/dry conditions |
| Operating Temperature | -40°C to 650°C | Resists thermal fade |
| Compressive Strength | ≥250 MPa | Suitable for heavy-load braking |
| Wear Rate | ≤0.4 cm³/MJ | Extended service life |
| Shore Hardness | 55-70 Shore D | Optimized for minimal noise generation |
Key Advantages
- Eco-Friendly Composition
Free from heavy metals (e.g., copper, iron), this brake linings formula aligns with global regulations restricting hazardous substances . - Superior Heat Dissipation
Ceramic matrices and silica additives efficiently dissipate heat, reducing brake fade during prolonged downhill braking . - Low Noise and Vibration
Aramid fibers and graphite inclusions minimize squeal, enhancing driver comfort . - Corrosion Resistance
Non-metallic components prevent rust formation, ideal for humid or saline environments . - Compatibility with Modern Systems
The brake linings mixes are tailored for integration with ABS and electronic braking systems (EBS) .
Storage and Packaging
- Moisture Protection: Packaged in vacuum-sealed, moisture-resistant bags to prevent degradation of organic binders .
- Temperature Limits: Store in environments between -20°C and 35°C; avoid direct sunlight.
- Stacking Guidelines: Maximum 6 layers to prevent deformation of friction layers.
- Shelf Life: 18 months in unopened, original packaging.
Application of Brake Linings Mixes
These brake linings friction materials are molded under high pressure (10-25 MPa) and cured at controlled temperatures (200-300°C) to ensure uniform adhesion to the backing plate. Post-production tests include shear strength (≥3.5 MPa) and thermal shock resistance cycles .
For specialized requirements, manufacturers adjust the brake linings mixture ratios to meet OEM standards or regional climate conditions .
By combining advanced ceramics and organic reinforcements, metallic-free brake linings deliver reliable, eco-conscious braking solutions for modern commercial vehicles .