Brake pads mineral fibers are core reinforcing additives in brake pads formula, and Bull Chemicals supplies high-grade options tailored for this field. Their key roles focus on strengthening structure, stabilizing friction, and boosting durability.
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First, they enhance mechanical robustness.
With 17-20% of Bull Chemicals’ mineral fibers (optimal dosage via R&D), brake pads reach flexural strength ≥11 MPa and compressive strength ≥24 MPa, exceeding industry minima of 8 MPa and 20 MPa. This resists cracking under 450,000+ simulated braking impacts.
Second, they ensure friction stability.
The fibers’ even dispersion forms a steady friction surface. Tests show pads with these fibers maintain a brake pads friction materials coefficient of 0.34-0.46 between -25°C and 310°C. At 270°C, coefficient fluctuation is ≤0.05, below the 0.07 industry limit, preventing brake fade.
Third, they reduce wear.
Featuring an aspect ratio of 14:1-23:1, the fibers build a wear-resistant matrix. Per 38,000+ cycle tests, rotor wear rate drops by 11-17% vs. fiber-free pads, and pad service life extends by 18% on average.
Bull Chemicals’ mineral fibers have a diameter of 2.8-7.5 μm, moisture content ≤0.4%, and thermal decomposition temperature ≥590°C. This ensures compatibility with diverse recipes, helping manufacturers produce cost-effective, ECE R90-compliant brake products.
