NOVELTY - A damp friction brake comprises iron-based framework and friction material layer bonded on iron-based framework. The friction material layer comprises (pts. wt.): nano silicon dioxide/boron modified phenolic resin (8-12), powder hydrogenated butyronitrile rubber (2-4), Kevlar (RTM: poly-para-phenylene terephthalamide) (10-15), carbon fiber (4-8), precipitated barium sulfate (14-18), cashew nut shell oil friction powder (3-5), metal sulfide (5-8), red copper fiber (3-5), calcium fluoride whisker (15-22), potassium titanate (2-4 )and stearic acid (0.5).    USE - Damp friction brake for wind generator.    ADVANTAGE - The brake has high-low-temperature resistance, abrasion resistance, low noise, and stable friction brake moment and is friendly environment.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the damp friction brake which comprises (A) providing above raw materials; (B) feeding Kevlar (RTM: poly-para-phenylene terephthalamide) and other raw materials into high-speed mixer, mixing and agitating for 4-5 minutes, and feeding chopped carbon fiber into the high-speed mixer, mixing and agitating for 1-2 minutes; (C) die pressing and molding; (D) hot curing; and (E) grinding and processing cured damp friction brake. The step (C) includes coating demolding agent into sectional cavity of preheated die, feeding mixture into sectional cavity of die, molding and primarily hot pressing at 160-170 degrees C and 11-13 MPa for 10-12 minutes. The step (D) includes heating to 150 degrees C, and preserving temperature for 1 hour; and heating to 160 degrees C in 0.5 hours, and preserving temperature for 2 hours at 160 degrees C; and heating to 170 degrees C in 0.5 hours, and preserving temperature for 1 hour; and heating to 180 degrees C in 0.5 hours, and preserving temperature for 2 hours; and heating to 200 degrees C in 1 hour, preserving temperature for 2 hours.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating a damp friction brake.