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poland Super fine kaolin
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Kaolin is a layered mineral mainly composed of hydrated aluminum silicate, generally represented by the chemical formula Al2O3·2SiO2·2H2O, also known as porcelain clay. Kaolin has good refractoriness, electrical insulation, adsorption, and chemical stability. Its fine texture and high whiteness make it an important non-metallic mineral resource with wide applications in various fields.
In the manufacturing of brake pads, the application and role of kaolin are as follows:
1. Reinforcing filler:
• Kaolin, as an inorganic filler added to the brake pad formulation, can improve the bulk density and mechanical strength of the friction material, making the brake pads more wear-resistant and durable.
2. Improving friction performance:
• It can adjust and stabilize the friction coefficient of the brake pads, ensuring consistent friction performance at different working temperatures, thus guaranteeing the stability and reliability of vehicle braking.
3. Thermal stabilizer:
• Kaolin has a high melting point and thermal stability, which can provide certain thermal insulation and heat dissipation when the brake pads are heated, delaying the thermal degradation phenomenon of the brake pads at high temperatures and extending their service life.
4. Reducing noise and vibration:
• Adding kaolin can improve the internal structure of the brake pads during the friction process, helping to reduce vibrations and noise during braking, enhancing driving comfort.
5. Reducing costs:
• Compared to other expensive reinforcing and friction-modifying materials, kaolin is a relatively inexpensive raw material, and its appropriate use can lower the production costs of brake pads.
Kaolin plays a multifaceted important role in brake pads, optimizing their mechanical properties while also improving thermal performance and NVH (noise, vibration, and harshness) characteristics, making it an indispensable component of composite materials.
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