The role of friction modifiers in friction materials?
According to the function of the friction modifier in the friction material, it can be divided into two types: "wear-increasing material" and "friction-reducing material". The friction material itself belongs to the friction material, and requires a high friction coefficient in order to perform braking and transmission functions, so the abrasive material is the main component of the friction performance modifier. The friction increasing effect of different fillers is different.
Friction material is a special material that works in a hot and high-pressure environment, so it is required that the filler components used must have good heat resistance, that is, thermal stability, including thermophysical effects and thermochemical effects.
The packing density of the filler has a great influence on the performance of the friction material. The different performance requirements of the friction material also have different requirements for the packing density of the filler.
Friction material is a special material that works in a hot and high-pressure environment, so it is required that the filler components used must have good heat resistance, that is, thermal stability, including thermophysical effects and thermochemical effects.
The packing density of the filler has a great influence on the performance of the friction material. The different performance requirements of the friction material also have different requirements for the packing density of the filler.
The purpose of using brake pad filler mainly has the following aspects:
1. Adjust and improve the friction performance, physical performance and mechanical strength of the product.
2. Control the coefficient of thermal expansion, thermal conductivity and shrinkage of the product to increase the stability of the product size.
3. Improve the brake noise of the product.
4. Improve the manufacturing process performance and processing performance of the product.
5. Improve the appearance quality and density of products.
6. Reduce production costs. When selecting fillers in the formula design of friction materials, it is necessary to understand the properties of fillers and the role they play in various characteristics of friction materials. The correct use of fillers determines the performance of friction materials and is also very important in the manufacturing process.
