Do you know anything about the composite materials in brake pads?
With the presentation of the transmission system, it means the dominance of the brake pads. It can be said that where there is a transmission device, there is a brake pad to ensure safety.
Are brake pads made of composite material? Yes, it's a very typical composite material. Because the formulation generally includes a fiber and a functional modifier, the resin is then used as a binder for hot rolling.
So how to design brake pads? Starting from the material of brake pads, composite brake pads can be divided into asbestos and non-asbestos. However, because asbestos is not environmentally friendly and harmful to human health, from the mid-1970s to the mid-1980s, countries began to use non-asbestos formulations.
Currently, there are three non-asbestos formulations: semi-metallic, oligo-metallic and non-metallic. For the brake liner, what the user needs is outstanding wear resistance, high power temperature zone after conflict heat generation, and now more and more attention to the noise problem. With the increasing concern of noise problems, many enterprises and research institutions are vigorously developing NAO formulas, hoping that the function of high temperature areas can also adhere to the original level. The advantages of small metal formula are fast heat dissipation, high conflict coefficient, loud noise, and large damage to the disk. There are many organic components in the non-metallic formula, but it is easy to carbonize in high temperature areas, and its function decreases accordingly. In the formulation we designed, phenolic resins with outstanding high temperature resistance were used.
Other ingredients and corresponding functions are as follows: Reinforced fiber: carbon fiber, aramong fiber, steel fiber, composite fiber Conflict agent: Conflict particles, zirconia (oxide, more expensive than alumina, but less noisy), magnesium oxide, potassium hexatitanate whisker lubricant: copper sulfide, artificial graphite (to reduce the harm to the disk) Other regulators: Nitrile powder, 2-8 brass powder, barium sulfate, carbonate In the actual calcium production process, the engineer will change the proportion and type of the original data according to the customer's requirements for conflict coefficient and noise calculation formula, and then manufacture small samples for testing, and then improve, test, and then will be produced and sold.
