Introduction to 3mm Chopped Glass Fiber in Brake Linings Formulas
3mm chopped glass fiber is a critical reinforcement material in brake linings mixtures, enhancing mechanical strength, thermal stability, and wear resistance in Brake Linings Friction Materials. Its uniform length and high compatibility with resins make it indispensable for optimizing performance in Brake Linings Mixes. Below is a technical overview, including specifications, advantages, and storage guidelines.
Technical Parameters of 3mm Chopped Glass Fiber in Brake Linings Formula
| Property | Specification | Test Method |
|---|---|---|
| Fiber Length | 3.0 ± 1 mm | ISO 23718 |
| Diameter | 13 ± 1 μm | ASTM D578 |
| Tensile Strength | 2000-3500 MPa | ISO 3341 |
| Thermal Stability | Up to 600°C | ASTM E831 |
| Moisture Content | ≤1.0% | ASTM D4019 |
| Bulk Density | 1.6-2.0 g/cm³ | ASTM B212 |
| Compatibility | Phenolic resins, rubber, graphite | Custom formulation |
Advantages of 3mm Chopped Glass Fiber in Brake Linings Ingredients
- Enhanced Structural Integrity:
The 3mm length ensures optimal dispersion in brake linings mixtures, reducing crack propagation and improving mechanical strength under high shear forces. - Thermal Stability:
Withstands temperatures up to 600°C, preventing deformation and maintaining friction efficiency during intense braking. - Anti-Cracking and Anti-Wear:
Reduces abrasive wear in brake linings friction materials and minimizes surface cracking in composite matrices. - Noise Suppression:
Dampens vibrations and suppresses squealing by stabilizing the brake linings formula during dynamic contact. - Environmental Compliance:
ROHS-compliant and free from hazardous substances, aligning with global automotive standards.
Storage and Packaging Guidelines
To preserve the performance of 3mm chopped glass fiber in brake linings ingredients:
- Packaging: Moisture-resistant sealed paper bags, vacuum-packed with desiccants, or bulk containers (e.g., laminated polyethylene-lined octagonal boxes).
- Storage Conditions:
- Temperature: <30°C
- Humidity: <60% RH
- Avoid UV exposure and contamination from dust/chemicals.
- Shelf Life: 12-18 months in unopened packaging.
Applications in Brake Linings Mixes
3mm chopped glass fiber is blended with:
- Binders: Phenolic resins, polyurethane.
- Friction Modifiers: Graphite, cashew dust.
- Fillers: Calcium carbonate, barite.
This hybrid brake linings formula balances high friction coefficients, thermal dissipation, and compliance with copper-free regulations.