Environmentally friendly, asbestos-free brake pads are a friction material made with a resin matrix and other reinforcing fibers substituted for asbestos. They are characterized by:
1. High coefficient of friction, excellent mechanical strength, and minimal thermal fade.
2. Does not contain steel wool or high-abrasivity compounds, resulting in low hardness and minimizing the risk of damaging brake discs.
3. Asbestos-free, eco-friendly and green.
4. Low wear and long service life.
Project |
Unit |
Test Results |
Compressive strength |
Mpa |
48.8
|
Tensile strength |
Mpa |
12.64
|
Shear Strength |
Mpa |
26.65
|
Simply Supported Beam Impact Strength |
kJ/m² |
6.9
|
Hardness |
HD |
80 + 5 |
Density |
g/cm³ |
1.97
|
Coefficient of friction |
100°C–200°C |
0.519
|
It turns out that the brake pads used in China were mostly made of asbestos materials, but asbestos brake pads have insurmountable drawbacks:
1. Due to asbestos's poor thermal conductivity, frictional heat dissipates slowly, leading to a thicker heat-degradation layer, accelerated wear, and environmental contamination—particularly, asbestos fiber dust can cause cancer in humans.
2. High-hardness abrasives and steel wool are used to enhance the coefficient of friction and improve heat dissipation performance.
3. After asbestos is completely dehydrated and decomposed at 650°C–700°C, its strength decreases.
4. Asbestos is prone to "thermal fade" in friction performance.
With growing environmental awareness and a heightened sense of self-protection among people, eco-friendly, asbestos-free brake pads will ultimately replace asbestos-based ones, promising broad prospects for widespread use.
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