Paper friction material although produced by paper making practises these materials are in fact elaborate composite structures which are made up of paper fibre, diatomite, carbon & friction powder. The materials porosity can reach highs of 70%. The production process consists of moulding the compound using heat & pressure, once the resin has solidified the material is blanked from sheet form & bonded to the steel core plate. Once this process is finished the final thicknesses & groove patterns are then machined to the surface. These are typically found in applications such as power shift transmissions & wheel brakes.
The following are properties that are associated with this type of material:
> Porous structure and flexibility
> Low ratio of static to dynamic coefficient of friction
> Smooth engagement
> Excellent energy capability
> Good wear resistance
| Parameter |
Wet Application |
Dry Application |
- Dynamic Coefficient (μd)
- Static Coefficient (μs)
- Wear Rate (λ)
Conditions of Application
|
- 0.10 – 0.14
- >= 0.14
- <= 2.0x10-8cm3/J
- Specific Pressure: <= 9MPa
Linear Velocity: <= 40m/s
Oil Temperature: <= 200 ºC
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