Carbon fiber friction brake pads are better, but they are more expensive. The following is an introduction to brake pad materials: NAO Friction Material: The base material in NAO friction materials is, in most cases, a mixture of two or more fibers (primarily inorganic fibers with a small amount of organic fibers). Therefore, NAO friction materials are non-asbestos hybrid fiber friction materials. Typically, brake pads are made of short-cut fiber friction blocks, while clutch plates are made of continuous fiber friction plates. Powder Metallurgy Friction Material: Also known as sintered friction material, it is made by mixing and pressing iron-based or copper-based powder materials, followed by sintering at high temperatures. It is suitable for braking and transmission conditions at higher temperatures, such as in aircraft, heavy-duty trucks, and heavy engineering machinery. Advantages: long service life; Disadvantages: high product cost, loud braking noise, heavy and brittle, and significant wear on the mating surface. Carbon Fiber Friction Material: This is a type of friction material made using carbon fiber as the reinforcing material. Carbon fiber has high modulus, good thermal conductivity, and heat resistance. Carbon fiber friction materials are the best-performing among all types of friction materials. Carbon fiber friction plates have high power absorption per unit area and are lightweight, making them particularly suitable for aircraft brake pads. Some high-end cars abroad also use them. However, due to their high cost, their application is limited, and production volume is relatively small.
