Wollastonite in Friction Applications:
Wolkem’s milled, HAR & Surface
modified Wollastonite grades are highly
inert, acicular in nature and have a
melting temperature of 15400C,
thus Wolkem’s Wollastonite grades are used
as a secondary reinforcement filler in dry
mix non-asbestos organic friction
materials such as Brake lining, Brake
Pads, Lining of Clutch facings, Friction
papers & Heavy Duty Blocks etc.
Wollastonite imparts
- Thermal stability and insulation
- Improved wear and processing
advantages
- Increased tensile strength
- Increased flexural modulus
- Improved strength
- Improved thermal insulation
- Improved pre form strength
- Reduces wear
- Reduces cracking
- Reduces noise
- Reduces costs
- Is much cheaper than hazardous
asbestos, which it replaces.
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