Application of CNSL Friction Dust in Brake Shoes Production
CNSL Friction Dust, derived from Cashew Nut Shell Liquid, has been attracting attention in the production of brake shoes. When incorporated into brake shoes mixtures and mixes, it exerts a notable influence on the performance of brake shoes friction materials.
Technical Parameters
- Friction Coefficient Modulation
CNSL Friction Dust can help modulate the friction coefficient of brake shoes. In laboratory tests, brake shoes with 15% CNSL Friction Dust in the mixture maintained a friction coefficient in the range of 0.35 – 0.45 under normal braking conditions. This is a stable range that ensures reliable braking force.
- Thermal Stability
It shows good thermal stability up to approximately 250°C. When the temperature of the brake shoes rises during braking, the CNSL Friction Dust – containing friction materials can maintain their mechanical and frictional properties within this temperature limit. Beyond 250°C, there may be a slight degradation in performance.
- Particle Size Distribution
The particle size of CNSL Friction Dust typically ranges from 10 – 50 micrometers. This particle size distribution is crucial as it affects the homogeneity of the brake shoes mixture. Smaller particles can provide better adhesion within the mixture, while larger particles contribute to the overall mechanical strength of the friction material.
Advantages
- Cost – effectiveness
CNSL Friction Dust is relatively inexpensive compared to some high – end friction – enhancing materials. The raw material, cashew nut shell liquid, is abundant in many regions. Using CNSL Friction Dust can reduce the production cost of brake shoes by about 20 – 30% without sacrificing too much on performance.
- Eco – friendliness
As it is derived from a natural source, CNSL Friction Dust is an environmentally friendly option. It is biodegradable and does not introduce harmful chemicals into the environment during the production or use of brake shoes. This is a significant advantage in the context of growing environmental concerns in the automotive industry.
- Good Friction – Modulating Ability
CNSL Friction Dust can effectively adjust the friction coefficient according to different braking conditions. In tests simulating both light – and heavy – duty braking, the brake shoes with CNSL Friction Dust showed a smooth transition in the friction coefficient, providing a consistent braking experience.
Disadvantages
- Limited High – Temperature Performance
As mentioned before, above 250°C, the performance of brake shoes with CNSL Friction Dust starts to degrade. In high – performance braking scenarios, such as continuous heavy braking during high – speed driving, the friction coefficient may drop significantly, leading to reduced braking efficiency.
- Moisture Sensitivity
CNSL Friction Dust is sensitive to moisture. In a humid environment with a relative humidity above 70%, the friction coefficient of the brake shoes can be affected. The moisture can cause the particles to clump together, leading to an uneven distribution in the brake shoes mixture and inconsistent braking performance.
- Mechanical Strength Limitations
Compared to some synthetic materials, the mechanical strength contributed by CNSL Friction Dust to the brake shoes friction materials is relatively lower. Although it can enhance the friction – related properties, it may not be as effective in improving the overall durability and wear – resistance of the brake shoes in extreme conditions.
In conclusion, CNSL Friction Dust offers cost – effective and eco – friendly solutions for brake shoes production with decent friction – modulating abilities. However, its limitations in high – temperature performance, moisture sensitivity, and mechanical strength need to be carefully considered. Brake shoe manufacturers should weigh these factors based on the specific requirements of their products.