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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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