Which Is Highly Preferred Material For Brake And Friction Pads In Disc Brakes?

Which Is Highly Preferred Material For Brake And Friction Pads In Disc Brakes? Phenolic resin is the most commonly used binder for brake friction material, which is produced by the condensation reaction of phenol and formaldehyde by acidic or basic catalyst. Two different types are used according to the manufacturing process. Which material is highly