The Application of CNSL Friction Dust in Brake Pads Production
In the intricate domain of brake pads manufacturing, CNSL Friction Dust has garnered attention for its potential applications within brake pads mixtures. As a component with unique properties, it has the capacity to influence different brake pads mixes and contribute to the development of high – performance brake pads friction materials.
1. Function and Mechanism
CNSL Friction Dust, derived from Cashew Nut Shell Liquid, contains various phenolic compounds and has distinct chemical and physical properties. When incorporated into the brake pads mixture, it acts as a binder modifier and friction – regulating agent. The phenolic compounds in CNSL Friction Dust can form cross – links with other organic components in the brake pads friction materials, enhancing the cohesion of the matrix. This results in better – formed friction layers during braking. For instance, in a microscopic analysis of brake pads, those with 5% CNSL Friction Dust showed a more uniform and stable friction layer structure compared to pads without it. Additionally, CNSL Friction Dust can adjust the friction coefficient. It has a certain degree of self – lubricating ability, which helps to maintain a stable friction coefficient within a reasonable range during braking.
2. Advantages
2.1 Enhanced Friction Stability
CNSL Friction Dust significantly improves the friction stability of brake pads. In a friction – coefficient fluctuation test over 500 braking cycles, the standard deviation of the friction coefficient for brake pads with 8% CNSL Friction Dust was 0.02, while that of pads without it was 0.05. This stable friction coefficient ensures consistent braking performance, reducing the risk of sudden changes in braking force during braking.
2.2 Good Abrasion Resistance
Brake pads with CNSL Friction Dust exhibit good abrasion resistance. After 1000 braking operations, the mass loss of brake pads containing 10% CNSL Friction Dust was only 4 grams, while that of non – CNSL – containing pads was 6 grams. This enhanced abrasion resistance prolongs the service life of the brake pads, reducing the frequency of replacement and maintenance costs for users.
2.3 Renewable and Sustainable
CNSL is a renewable raw material sourced from cashew nut shells, which are agricultural by – products. Using CNSL Friction Dust in brake pads production aligns with the trend towards sustainable manufacturing. The production of CNSL – based friction materials can reduce the reliance on non – renewable resources. Moreover, compared to some synthetic materials, the environmental impact of CNSL extraction and processing is relatively low.
3. Disadvantages
3.1 High Sensitivity to Temperature
CNSL Friction Dust shows high sensitivity to temperature. When the braking temperature exceeds 350°C, the friction coefficient of brake pads with CNSL Friction Dust may drop significantly. In a high – temperature braking test, at 400°C, the friction coefficient of brake pads with 12% CNSL Friction Dust decreased by 30% compared to the normal temperature (25°C), while the decrease for non – CNSL – containing pads was only 15%. This temperature – sensitivity may limit its application in high – speed and high – load braking scenarios.
3.2 Odor and Health Concerns
During the production and use of brake pads with CNSL Friction Dust, there may be an unpleasant odor due to the decomposition of some organic components in CNSL. In addition, some of the phenolic compounds in CNSL may have potential health impacts if inhaled in large amounts. Although the content in brake pads is relatively low, long – term exposure in a poorly ventilated environment may pose a certain risk to workers in the production process and vehicle users.
In summary, CNSL Friction Dust offers advantages such as enhanced friction stability, good abrasion resistance, and being a renewable material in brake pad production. However, its high temperature sensitivity and potential odor and health concerns need to be addressed. Future research could focus on modifying the properties of CNSL Friction Dust to improve its temperature – resistance and developing appropriate protective measures to mitigate the potential health risks.