Introduction to Acrylic Fiber in Brake Linings Formulas
Acrylic fiber, a synthetic polymer derived from polyacrylonitrile (PAN), is increasingly adopted in brake linings mixtures due to its exceptional thermal resistance, structural reinforcement, and compatibility with friction modifiers. This article outlines its technical specifications, advantages, and integration into Brake Linings Friction Materials, alongside storage guidelines.
Technical Parameters of Acrylic Fiber in Brake Linings Mixes
| Parameter | Value/Range | Notes |
|---|---|---|
| Fiber Diameter | 10–15 μm | Enhances matrix cohesion and reduces resin consumption |
| Density | 1.16–1.18 g/cm³ | Lightweight yet mechanically robust |
| Thermal Resistance | 180–220°C | Maintains integrity under moderate braking heat |
| Tensile Strength | 300–400 MPa | Reinforces Brake Linings Ingredients against shear stress |
| Content in Formula | 3–8% (by weight) | Optimizes friction consistency without compromising flexibility |
Key Advantages of Acrylic Fiber in Brake Linings Formula
- Thermal Stability: Withstands temperatures up to 220°C, preventing premature degradation in urban driving conditions.
- Corrosion Resistance: Inert to moisture and brake fluid, extending the lifespan of brake linings friction materials.
- Noise Reduction: Absorbs vibrations, reducing high-frequency squeal by 15–20% compared to metallic fibers.
- Cost Efficiency: Reduces reliance on expensive ceramic modifiers while maintaining performance.
Storage and Packaging Guidelines
- Moisture Control: Store in sealed, desiccant-containing bags (humidity <50%) to prevent fiber clumping.
- Temperature Limits: Avoid prolonged exposure to temperatures above 40°C to preserve tensile properties.
- UV Protection: Use opaque packaging to prevent UV-induced polymer degradation.
Integration with Brake Linings Mixture Components
Acrylic fiber synergizes with:
- Friction Modifiers: Graphite (5–10%) and copper particles (3–5%) for balanced friction coefficients (0.35–0.45 μ).
- Binders: Phenolic resins (12–18%) or eco-friendly water-based acrylic binders for reduced VOC emissions.
- Fillers: Barium sulfate (10–15%) to enhance thermal conductivity and reduce wear rates.
This brake linings formula ensures durability (>30,000 km lifespan under standard driving cycles) and compliance with automotive safety standards.
Conclusion
Incorporating acrylic fiber into brake linings mixes offers a cost-effective solution for balancing thermal performance, noise suppression, and environmental sustainability. Proper storage and optimized blending ratios are critical to maximizing its contribution to advanced friction materials.