Introduction to Zinc Oxide in Brake Linings Formulas
Zinc oxide (ZnO) is a critical inorganic compound widely employed in brake linings formulas due to its multifunctional properties. As a key component of Brake Linings Ingredients, it enhances thermal stability, friction performance, and wear resistance in Brake Linings Friction Materials, making it indispensable in modern automotive braking systems.
Technical Parameters
| Parameter | Value/Range |
|---|---|
| Chemical Formula | ZnO |
| Density | 5.6 g/cm³ |
| Melting Point | 1975°C |
| Particle Size | 0.1–5 μm (micronized grade) |
| Thermal Conductivity | 25–30 W/(m·K) |
| Purity (Industrial Grade) | ≥99% |
Advantages of Zinc Oxide in Brake Linings
- Enhanced Friction Stability
Zinc oxide improves the Brake Linings Mixture‘s friction coefficient by stabilizing the interaction between other brake linings ingredients under high-temperature conditions. This reduces brake fade and ensures consistent performance3. - Thermal Resistance
With a high melting point (1975°C), ZnO effectively dissipates heat generated during braking, preventing thermal degradation of brake linings friction materials. - Anti-Corrosion Properties
ZnO acts as a corrosion inhibitor, protecting metal components in brake systems from oxidative damage caused by moisture and heat. - Environmental Compatibility
Unlike some heavy metal additives, ZnO is non-toxic and complies with global regulations (e.g., REACH, RoHS), making it a sustainable choice for Brake Linings Mixes. - Cost Efficiency
Its high reactivity allows lower loading levels in Brake Linings Formula, reducing material costs without compromising performance.
Storage and Packaging
- Storage Conditions:
- Store in a cool, dry, and well-ventilated area away from direct sunlight.
- Maintain relative humidity below 50% to prevent clumping.
- Avoid contact with acids or strong oxidizing agents.
- Packaging Methods:
- Typically packaged in 25 kg multi-layered polyethylene (PE) bags with moisture-resistant liners.
- Bulk quantities may use sealed fiber drums or super sacks for industrial applications.
- Labels must include hazard symbols (if applicable), batch number, and manufacturing date.
Role in Brake Linings Formulation
In brake linings mixes, zinc oxide serves multiple roles:
- Friction Modifier: Balances the friction coefficient across varying temperatures.
- Binder Enhancer: Improves adhesion between organic resins and inorganic fillers.
- Reinforcement Agent: Enhances mechanical strength and abrasion resistance.
Conclusion
Zinc oxide is a versatile and indispensable ingredient in brake linings formulas, offering thermal stability, environmental safety, and cost efficiency. By integrating ZnO into brake linings friction materials, manufacturers achieve durable, high-performance braking systems that meet stringent automotive standards. Proper storage and packaging further ensure its efficacy throughout the product lifecycle.