Introduction to Truck Brake Shoes Asbestos-Free Mixture
Truck brake shoes asbestos-free mixtures are eco-friendly brake shoes friction materials designed to replace traditional asbestos-based formulations while maintaining high-performance braking capabilities. This brake shoes formula combines advanced organic fibers, ceramic particles, and metallic reinforcements to achieve optimal friction stability, reduced environmental impact, and compliance with global safety regulations. Below is a detailed overview of its composition, technical specifications, advantages, and storage protocols.
Technical Parameters
The table below highlights key properties of a typical asbestos-free brake shoes mixture:
| Parameter | Specification | Remarks |
|---|---|---|
| Friction Coefficient (μ) | 0.35-0.45 (Dry) | Ensures consistent stopping power |
| Density | 2.2-2.8 g/cm³ | Lightweight yet durable |
| Operating Temperature | 0°C to 600°C | Resists thermal degradation |
| Compressive Strength | ≥250 MPa | Withstands high-pressure braking loads |
| Wear Rate | ≤0.6 cm³/MJ | Extended service life |
| Shore Hardness | 55-70 Shore D | Optimized for drum contact |
| Certifications | ISO/TS 16949, E-Mark R90 | Complies with global standards |
Key Advantages
- Eco-Friendly Composition
Free from hazardous asbestos, this brake shoes mix utilizes organic fibers (aramid, cellulose) and ceramic additives, reducing health risks and environmental pollution . - Thermal Stability
Ceramic components enhance heat dissipation, minimizing brake fade even under prolonged heavy braking . - Low Noise and Vibration
The brake shoes friction materials incorporate noise-dampening agents like rubberized cork, ensuring quiet operation. - Regulatory Compliance
Meets stringent international standards (e.g., ECE R90) for friction performance and safety . - Versatility
Compatible with cast iron and composite brake drums, suitable for trucks, buses, and trailers .
Storage and Packaging
- Moisture Protection: Packaged in vacuum-sealed, moisture-resistant materials to prevent fiber degradation .
- Temperature Control: Store in dry environments below 35°C to avoid binder crystallization.
- Stacking Limits: Maximum stacking height of 6 layers to prevent deformation.
- Shelf Life: 24 months in unopened original packaging .
Application of brake shoes mixes
The brake shoes formula is molded under high pressure (10-25 MPa) and cured at 150°C–200°C to ensure adhesion to the shoe plate. Post-production testing includes shear strength (≥3.5 MPa) and thermal cycling resistance to validate durability . Customizable formulations are available to meet OEM-specific requirements for friction balance and wear resistance.
By integrating sustainable materials with advanced engineering, asbestos-free brake shoes mixtures deliver reliable, eco-conscious braking solutions for modern commercial vehicles.