The friction materials having the excellent heat-resisting property and the high friction coefficient and its manufacturing method, and the wet friction materials using thereof

摘要

The present invention is a friction material excellent in heat resistance and having a high friction coefficient and a method and a wet friction material using the same. relates to a cylindrical diatom powder (Diatom) 37 ~ 71 wt%, and even if the 450 ~ 500 CFS (Canadian Standard Freeness) A 12 ~ 46% by weight of cotton, the cotton and even the 510 ~ 560 CFS B 12-46 wt.%, and high if the 290 ~ 350 CFS aramid fibers and 5-27% by weight of propelled material consisting of, as a filler in a weight ratio of the diatomaceous earth or the graphite 100: paper making process by using a ratio of 1 to 20 performing the following, novolak (novolac: phenol formaldehyde) mixing the alcohol-type phenolic resin and subjected to the impregnation process was subjected to the pressure (squeezing) and dried and cured producing a friction material, cut to fit the specifications, then compressed in a mold method with excellent heat resistance and high friction material by preparing a wet friction material that the wet friction material having a friction coefficient and the effect that can be easily obtained.