Composite friction materials are engineered substances used in various applications where controlled friction is essential. These materials are typically used in braking systems, clutches, and other mechanisms where managing frictional forces is critical to performance and safety.

Composite friction materials are a blend of different constituents designed to provide optimal frictional properties. They generally consist of a matrix material (usually a resin) and a variety of fillers and reinforcements, such as fibers, metals, and friction modifiers.

Components

Matrix: The matrix holds the composite together and provides the bulk of the material's strength and durability. Common matrix materials include phenolic resins, thermoplastics, and other polymers.

Fibers: Fibers such as aramid, carbon, glass, and steel provide reinforcement, improving the material's structural integrity and wear resistance.

Friction Modifiers: Substances like graphite, metal powders (e.g., copper, brass), and ceramic particles are added to fine-tune the friction characteristics.

Fillers: Inorganic fillers like calcium carbonate and barytes can be included to improve certain properties and reduce costs.