| 摘要 |
PURPOSE:To obtain a friction material which gives a stable coefficient of friction and abrasion resistance even under high-temperature and high-load conditions by forming a friction material layer consisting of a specified fibrous base material, a specified friction modifier, and a binder containing a polyamide- imide resin on a backing sheet. CONSTITUTION:This friction material is obtained by forming on a backing sheet a friction material layer consisting of a fibrous base material containing short glass and aramid fibers, a friction modifier containing a copper powder, and a binder containing a polyamide-imide resin in an amount of 10-60wt.% (solids) based on the friction material layer. It is prepared by mixing a fibrous base martial containing short glass and aramid fibers and a friction modifier containing a copper powder with a solution of a binder containing a polyamide- imide resin, applying the obtained mixture to a backing sheet, and heating it with no pressure applied thereto. |
