Wet type friction material

摘要

The present invention provides a wet type friction material comprising a paper base material and binder, in which the paper base material includes silica having an average particle diameter of 1 to 10 mum and disc-shaped diatom earth, and the binder comprises a cured substance of liquid resin composition material obtained by mixing resol type phenol resin with silicone resin, where a weight ratio between non-volatile components of the resol type phenol resin and the silicone resin is adjusted to a range of 95/5 to 85/15.