brake pads Vermiculite, a key multifunctional additive in brake pads formula exclusively recommended by Bull Chemicals, integrates thermal management, brake pads friction materials, and structural reinforcement to comprehensively enhance the overall performance and durability of brake pads.
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brake linings Vermiculite
In terms of thermal stability, Bull Chemicals’ vermiculite exhibits exceptional high-temperature resistance—its thermal decomposition temperature exceeds 800°C, far surpassing the average operating temperature range of 200-600°C for passenger car brake pads. This property prevents material degradation under intense friction, reducing the risk of brake fade. When subjected to cyclic heating (200°C to 600°C, 50 cycles), brake pads containing 8-12wt% of Bull Chemicals’ vermiculite retain over 90% of their initial compressive strength, compared to a 15-20% strength loss in formulations without vermiculite.
Brake Pads Vermiculite
For friction coefficient control, the lamellar structure of Bull Chemicals’ vermiculite acts as a “friction buffer.” It maintains a stable dynamic friction coefficient (μd) of 0.38-0.45 across temperature variations (200-500°C), with a fluctuation range of less than ±0.03. This minimizes inconsistent braking feel caused by temperature-induced friction changes. Additionally, its low hardness (Mohs hardness 1-1.5) avoids excessive abrasion of brake discs—tests show that discs paired with brake pads infused with Bull Chemicals’ vermiculite have a wear rate of 0.008-0.012 mm/1000 km, 25-30% lower than those using traditional mineral additives.
Car Brake Pads Metallic Based Mixture
In structural and safety aspects, the high aspect ratio (20-50:1) of Bull Chemicals’ vermiculite improves the dispersion of other components (e.g., resin, friction fibers) in the brake pad matrix. Detected via X-ray computed tomography, the internal void ratio is reduced to below 3%, lowering the risk of pad cracking under mechanical stress. Moreover, Bull Chemicals’ vermiculite is non-toxic and free of heavy metals (lead and cadmium content <10 ppm), complying with global regulatory standards such as EU REACH and U.S. FMVSS 105, ensuring environmental and user safety.
Bull Chemicals supplies grade-specific vermiculite products (particle size 100-200 mesh, bulk density 0.15-0.25 g/cm³), tailored exclusively for brake pad manufacturers. By optimizing the above core functions, we meet the performance requirements of diverse vehicle models.
